key: cord-0803671-wqcoias9 authors: Blanchflower, David G.; Graham, Carol L. title: The Mid-Life Dip in Well-Being: a Critique date: 2021-10-19 journal: Soc Indic Res DOI: 10.1007/s11205-021-02773-w sha: af0fa0e030b64d361f3ee7658bd37a1f643ff457 doc_id: 803671 cord_uid: wqcoias9 A number of studies—including our own—find a mid-life dip in well-being. Yet several papers in the psychology literature claim that the evidence of a U-shape is "overblown" and if there is such a thing that any such decline is "trivial". Others have claimed that the evidence of a U-shape "is not as robust and generalizable as is often assumed," or simply "wrong." We identify 409 studies, mostly published in peer reviewed journals that find U-shapes that these researchers apparently were unaware of. We use data for Europe from the Eurobarometer Surveys (EB), 1980–2019; the Gallup World Poll (GWP), 2005–2019 and the UK's Annual Population Survey, 2016–2019 and the Census Bureau's Household Pulse Survey of August 2021, to examine U-shapes in age in well-being. We find remarkably strong and consistent evidence across countries of statistically significant and non-trivial U-shapes in age with and without socio-economic controls. We show that studies cited by psychologists claiming there are no U-shapes are in error; we reexamine their data and find differently. The effects of the mid-life dip we find are comparable to major life events such as losing a spouse or becoming unemployed. This decline is comparable to half of the unprecedented fall in well-being observed in the UK in 2020 and 2021, during the Covid19 pandemic and lockdown, which is hardly “inconsequential” as claimed. Several economic studies, including our own 1 have recently found evidence of a significant and empirically large downturn in human well-being during the mid-life years -socalled 'happiness curves' (Rauch, 2018) . The U-shape in well-being has now been found in 145 countries . The research now extends to trends in unhappiness, stress, lack of sleep, depression, and even suicide (Daly et al, 2011) and across large numbers of data sets, multiple measures of unhappiness and countries as well as over time . Every US state has a U-shape . There is within-person evidence of a U-shape from longitudinal surveys which focuses on changes in life satisfaction as a linear function of individual age (Cheng, Powdthavee and Oswald, 2017) . Controlling for cohort effects has little or no impact on the U-shape . There is a hill-shape in anti-depressant use which maximizes in the mid-40 s in European countries , and in stress across a large number of countries in the Gallup World Poll (Graham and Ruiz-Pozuelo). The U-shape pattern in mid-life even extends beyond humans to apes (Weiss et al., 2012) . There are many explanations for the U-shape, some of them even biological, as the paper on the U-curve in apes suggests. Some of them, though, seem to be a natural part of the aging process. Individuals learn to adapt to their strengths and weaknesses over time, and become much more realistic in their expectations, as they age. They also become emotionally 'wiser' and have fewer emotional swings (Rauch, 2018) , and appreciate life more as they age, not least as they are much more likely to see friends and siblings die. The young have less experience navigating stressful experiences than do older people. Mid-life, meanwhile, tends to bring an increase in stressful experiences, such as having dependent children and dependent parents at the same time. And, finally, a small part of the explanation, as we note below for the over 70's, is that happier people are healthier and tend to live longer, creating a selection effect in the older tail of the age distribution. Most recently, the increases in the U.S. deaths of despair due to drugs, alcohol, and suicide occur precisely in the middle-aged, 35-64 years (Case & Deaton, 2015 . The trends in these deaths have a robust association with the same ill-being markers-unhappiness and stress-that increase in mid-life and are responsible for driving up the overall mortality rate (Graham and Pinto, 2019) . A recent analysis by the OECD in How's Life, 2020 shows that deaths of despair, by suicide, alcohol abuse or drug overdoses are higher in ten OECD countries-Slovenia; Lithuania; Latvia; Korea; Denmark; Belgium; Hungary; Austria; Finland and Poland-than they are in the United States. 2 Blanchflower and Oswald (2020) show that despair, measured as every one of the prior thirty days being a bad mental health day has doubled over the last two decades. By 2019 one in eight prime-age white low educated workers were in despair on this measure. Blanchflower and Feir (2021) , using the same data, find that despair is especially high also among Native Americans. Graham and Pinto (2021) found those out of the labor force in this same cohort have the worst reported well-being and objective health of any other labor group, with high levels of despair, reported pain, and disease diagnostics. They are also more likely to live in their parents' homes or census tracts-contributing to the decline in U.S. geographic mobility, a critical means to finding new jobs. There is some debate about the existence of the U-shape. In what follows we examine that evidence. We start off by surveying the literature. We critique some earlier studies in psychology that were based on small samples. We also re-examine claims from earlier papers and re-estimate equations and find different conclusions. We then discuss evidence provided in three recent papers from psychologists arguing the claims of the existence of U-shapes are 'wrong' (Galambos et al, 2021a) or trivial (Jebb et al, 2020) . We examine their claims and show a) they were based on wrongly classifying research findings b) they surveyed a highly selective list of 28 papers, 21 of which found U-shapes, but ignored 388 additional papers including a further 353 in peer-reviewed journals in English finding the opposite of what they claim 3 . In a response (Galambos et al., 2021a (Galambos et al., , 2021b ) maintained the same conclusion and did not even discuss any of the new evidence. It is important to be clear about what dimensions of well-being we are referring to and using in our data. For the most part, we focus on life satisfaction and happiness, which are both life course evaluations of positive well-being, usually assessed on 4, 5, 7, or 11-point scales. Life satisfaction is generally the preferred measure, as it is more clearly framed, compared to happiness, which can be confused with momentary contentment. Yet it was the most widely used question in many of the earlier surveys, in which respondents were asked how happy they are with their lives as a whole. 4 The two terms are used interchangeably in much of the literature and in this paper where they reflect the question that is asked in the particular data we are referring to. In practice, responses to the two questions correlate very closely, as do the variables that are associated with the patterns in them. In 2 20 cross-section estimates and 13 longitudinal but of these five papers produced both cross-section and longitudinal results, hence there are 28 papers examined. 4 For example, the Eurobarometer survey series taken across European countries for decades, that we use below, asks a 4-step life satisfaction question. some cases, we also use markers of ill-being, such as stress, despair, and reported depression. As discussed below, the age relationship with these markers displays a hump rather than U shape, peaking again in the mid-life years. We also present nationally representative data from the UK's national statistical office, the ONS, showing that the fall in well-being from youth to midlife is far from trivial. Indeed, the fall is approximately half the size of the record breaking drops in well-being observed in the COVID pandemic. It is also comparable to the size of well-being declines such as losing a spouse or becoming unemployed. Finally, we present supporting evidence from the US Census Bureau showing that the taking of prescription medications traces out an inverse U-shape. We conclude with a discussion of the evidence. A few prominent papers in the past in psychology and economics dismiss the mid-life downturn as an illusion. An earlier review by Ulloa et al. (2013) goes as far as to draw the conclusion that "extant studies … show either a U-shaped, inverted U-shaped or linear relation between ageing and subjective well-being." Myers (2000, p. 58) argued that "Although many people believe there are unhappy times of life-times of adolescent stress, midlife crisis, or old age decline-repeated surveys across the industrialized world reveal that no time in life is notably happiest and most satisfying". In contrast, Michael Argyle, concluded that studies of life satisfaction found happiness increased with age (Argyle, 1999 (Argyle, , 2001 . Palmore and Luikhart (1972) argue that age has little or no relationship with life satisfaction. Many of the earlier studies cited in the psychology literature were based on very small samples such as Prenda Gross et al. (1997) with four studies (study 1; n = 127; study 2; n = 49; study 3; n = 82 and study 4; n = 1080) and Freund and Baltes (1998) (n = 206). Palmore and Luikhart (1972) (n = 502 for ages . It is hard to say much of anything about statistical differences in well-being by age with sample sizes this small. Assuming the samples looked at are from age 20 to 70 with a sample size of 200 that averages about four people per age cell. While this may be usual for clinical studies, samples this size tend not to yield robust econometric analysis. Easterlin claims "happiness is greatest at midlife but not by a great deal. On average it rises somewhat as people progress from age 18 to 51 and declines thereafter" (2006, p. 471). A survey by Diener et al., (1999, p. 291) concluded that "although a small decline in life satisfaction in age is often found the relation is eliminated when other variables such as income are controlled. More important to note is that other recent studies converge to show that life satisfaction often increases, or at least does not drop, with age." Diener and Su (1998) examined World Values Survey data for 1994 and argued that the raw data on life satisfaction "trended up slightly through age." Deaton (2008) concluded that the U-shaped relation is present solely in rich, English-speaking countries in which the elderly is relatively satisfied with their lives. In his words, "for most of the world, life satisfaction declines with age; the exceptions being among the very highest-income countries-including the United States, Canada, United Kingdom, Australia, and New Zealand-where life satisfaction is U-shaped with age, falling at first and rising after middle age" (ibid., p. 8). Even when U-shapes were found they were frequently dismissed as largely irrelevant, and the scale of the effects were frequently classified as trivial. For example, Cantril (1965) is often cited as finding no evidence of a U-shape in well-being although his study in fact shows them. When asked to indicate their thoughts about their current life 24.2% of those age < 29; 22.3% of those 30-49 and 29.3% of those 50 + responded in the high range! On the other hand, 27.5%, 29.1% and 25.2% responded in the low range of the ladder scale 5 . These look like U-shapes. Diener et al (1999) citing Inglehart (1990) went on to argue that "international studies based on representative samples from multiple countries also show that life satisfaction does not decline with age." Myers (1992) , for example, had also argued that Inglehart showed that "age differences in well-being were trivial. Does happiness then align itself more with any particular age? Do young adults have more fun? Surprisingly, and definitely, not" (p.69). Ingelhart (1990) examined well-being across sixteen nations using data from the Eurobarometer (#13-#26 covering the period April 1980-November 1986) and the World Values Survey for the United States, Canada, Hungary and Japan for 1981-1982 and argued that there was "little variation by age" in well-being (p.224). He did, however, note that "we do find a slight curvilinear tendency with both indicators, such that satisfaction and happiness decline slightly from the youngest to the middle-aged groups and then rise again among the oldest group." It turns out that in the raw data Inglehart reported on page 225, there were obvious U-shapes in age for nine of the sixteen countries as well as overall in happiness 6 . Using happiness from Eurobarometer #18 and #19 and modelling who said very happy-controlling for income, occupation, education, nationality and marital status-he found the following pattern by age: 15-24 = 21%; 25-34 = 21%; 35-44 = 19%; 45-54 = 21% and 65 + = 29%. More on this below, where we use the same data and conclude there are indeed substantive U-shapes in age, contrary to the claims of what appears to be a generation of psychologists. Given the reach of this phenomenon across a large proportion of the world's population, and its association with other behaviors that are indicative of poor psychological and physical health, we believe it is important to resolve this debate. The significant evidence that we present in this paper from our most recent work in addition to that of earlier studies, makes it difficult to refute the claim that the mid-life dip is significant, both statistically and in terms of human experience. In a recent critique Galambos Having analyzed these 28 papers, that generated 33 different findings, twenty crosssection, thirteen longitudinal: five of the papers had both cross-section and longitudinal estimates, they reported that for the cross-section studies, seven found U-shapes; three did not and 10 were mixed. For the thirteen longitudinal studies they reported that five studies found U-shapes while four did not with a further four 'mixed'. On the basis of this, what we will show from a flawed summary, the authors concluded that "the purported U shape is not as generalizable or robust as often portrayed," They later note on the 'purported' U-shape: "The purported U shape in happiness is interpreted by a number of economists as evidence that, as people move through the life course, they will experience a midlife trough, sometimes labeled a midlife crisis." That is exactly what the evidence presented in this current paper supports. GKJL1 went even further and claimed the following. "We believe the conclusion that happiness declines from late adolescence to midlife (the first half of the U-shape) is premature, and possibly wrong." They also claim that "given the body of evidence over recent years, we cannot conclude that there is a universal U shape in happiness." We disagree. In what follows we argue that given the body of evidence over recent years, it is clearly possible to conclude that there is a universal U shape in happiness. The evidence we present supports the conclusion that there is a decline in well-being from youth to midlife, rather than 'premature' and 'wrong'. We provide a detailed rebuttal of these claims, several of which are unusual to say the least. Blanchflower and Graham (2021a, 2021b)-henceforth B&G-challenged the conclusion that the finding of a U-shape was wrong by noting that most of the estimates the authors evaluated were misclassified and once those errors were corrected almost all found U-shapes and none didn't. In regard to the twenty studies using cross-section data, B&G showed one paper had to be excluded as it didn't fit GKJL's own criteria; three were 'mixed' and sixteen of the papers found U-shapes. In regard to the thirteen studies that used longitudinal data, B&G showed three were ineligible, one was mixed and nine found U-shapes mostly based on direct quotes from the paper's authors themselves. For example, GKJL1 classified Dolan et al. (2017) as a no despite this direct quote. "the quadratic 'U-shape' observed in other research was also evidenced here across measures… It was observed without and with controls," (2015, p. 69). So, after the misclassifications identified above were accounted for and ineligible studies dropped, B&G found that 21 papers found U-shapes as several of the papers produced both longitudinal and cross-section estimates, four had 'mixed' results and there were zero 'no's' 7 . It is notable that the evidence from papers that used both longitudinal and cross-section data were both supportive of U-shapes. Misclassification errors alone meant GKJL1's conclusions were flawed. In addition, B and G noted that GKJL1 had omitted what is now 388 additional papers that all found well-being U-shapes in age which means their review was entirely unrepresentative of the findings in a voluminous literature 8 Thus, in addition to the 21 papers that B&G identified, that found U-shapes, then, there are 388 more, making 409 in all, and counting 9 . Galambos et al., (2021a, 2021b)-henceforth GKJL2-in a reply to our comment, had the opportunity to respond to these omissions but instead responded, for reasons that remain unclear, that it was not their intention to do an exhaustive review. "We referenced previous studies on life satisfaction and happiness and reviewed a sample of 29 relevant empirical studies published in peer-reviewed journals between 2013 and 2019 10 . It was not the goal of our paper to do an exhaustive literature review or meta-analysis, and to tally up the total number of studies that found, or did not find, the U shape. Instead, we wanted to show support for the view that not all researchers find the U shape, and when they do, they often also illustrate variability in age related patterns of happiness. We concluded that the U shape is not as generalizable or robust as often portrayed." And later: "More importantly, we hold that what matters most for understanding happiness across the lifespan is not the number of studies that support one position but the fact that there are a variety of outcomes and conclusions." The evidence that we present does not support this statement. GKJL2 have not credibly countered the evidence of clear U-shapes in these papers. When given the opportunity to produce an additional list of papers that did not find U-shapes to counter the 380 that did, GKJL2 reported none. They also did not challenge the findings of a single one of the 359 additional papers that B&G identified as inconsistent with their contentions 11 . GKJL1 further suggested that it was inappropriate to examine evidence on the U-shape using cross section data. They claim that: "Regardless of whether a U shape is found in cross-sectional data, people at different ages or in different age groups reporting different levels of happiness is not evidence of a developmental process that takes place within individuals across the life span. Longitudinal research is needed to investigate intraindividual change." This seems extreme especially given the problems of attrition bias in longitudinal surveys. GKJL2 go further and unusually criticize cross-section studies because of their failure to include dead people. Cross-section studies, they argue, "have selection issues. The pool of respondents at different ages for cross-sectional studies is inherently biased as, for example, those at older ages who have died are no longer available for inclusion in the study." Nationally representative cross-section studies of people who are alive are not intended to be representative of dead people. Inevitably the unemployment rate calculated by the Bureau of Labor Statistics from a representative sample of the workforce in the US in April 2021 by construction does not include the labor force activity of the dead. The Census Bureau does however provide detailed data of who died as well as their characteristics. Some of the 408 studies used longitudinal data and some used cross-section. Both types of data provide useful and broadly equivalent evidence on U-shapes. The new Lancet Commission on Mental Health Task Force (Aknin et al., 2020) has recently published its first evidence on the impact of COVID19 using both cross-section and longitudinal data. "Considering repeated cross-sectional and longitudinal surveys in tandem is particularly informative because the two methodologies have non-overlapping strengths and weaknesses. For instance, because longitudinal surveys track the same people over time, this strategy minimizes concerns that different types of people were recruited for each survey, and that individual differences (e.g., personality) might obscure relationships in the data. Meanwhile, repeated cross-sectional data minimizes worries that respondents who drop out of the study systematically differ from those who remain (i.e. selective retention) because each survey recruits a new but well-balanced sample. As such, consistent patterns observed across both types of evidence offer robust and convincing conclusions." This seems right. There is also much new evidence from longitudinal surveys finding U-shapes that is entirely consistent with the cross-section evidence. A paper that recently appeared in Psychological Medicine that examined the most important longitudinal studies in the worldthe 1946, 1958 and 1970 British cohort studies-finds inverted U-shapes in unhappiness and distress. It is unusual to say the least for referees to guess what is in a paper. That means both referees were unaware of the misclassifications and the additional 388 papers that found U-shapes many of which were identified in B&G missed by GKJL1. Having a "pretty good idea" is not good enough. We asked for a right of reply to this paper, but this was declined by the editor. See also Blanchflower (2021). "Overall, after controlling for cohort differences, the age profile of psychological distress followed an inverted U-shape in adulthood, with symptoms increasing from early-to mid-adulthood, and subsequently declining. " Gondek et al (2020). Prior, Jones and Manley (2020) use longitudinal data from the BHPS for Great Britain and find that "mental ill-health worsens over time from young adulthood to around the age of 50, improving till around retirement age (~ 65) where it appears to decline through old age:" An inverted U-shape in unhappiness. The U.S. looks a bit different in the raw data than many other countries. In raw data, especially the happiness data from the General Social Survey, there is an uptick in wellbeing initially to around age thirty before it drops and the picks up again 12 Blanchflower and Graham (2021b) note the importance of marriage in explaining this uptick which is present for the married but not the unmarried in the U.S. The U.S. stands out compared to European countries in terms of its earlier average age for married, and then high rates of divorce later, which in part explains the early uptick and then drop. We now turn to a question that has been examined in the literature, whether control variables should or should not be included when examining the U-shape. Jebb, Morrison, Tay and Diener (2020)-henceforth JMTD-examined age and three measures of well-being, using data from the 2005-2016 Gallup World Poll (GWP). JMTD look at unadjusted, raw patterns in the data, yet compare those to general patterns from regressions with a battery of socio-economic controls in papers such as and Graham and Ruiz-Pozuelo (2017). As such, they are not comparing like with like. Each of these specifications captures different things. Specifications with controls capture the pure effects of aging, controlling for the confounding well-being effects of things that may change as people age. The specification without controls captures the effects of aging and these confounding factors. Neither specification is right or wrong, rather they are addressing different questions, something we will explore in greater detail below on whether to include controls or not. Several authors, in addition to JMTD, such as Glenn (2009), have argued against the inclusion of control variables. Easterlin (2011) and Deaton (2018) have also made the case that the well-being effects of aging should be analyzed without controlling for confounding factors. Whether we include controls or not, we still find significant evidence of U-shapes in well-being and hill-shapes in stress. Stone, Schwarz, Deaton and Steptoe (2010) reported U-shape relations, using the 2008 GWP with and without controlsfor employment, having a partner and/or a child at home-in happiness and enjoyment, with a nadir around 50, a peak in worry at around 50, and in life satisfaction at the same age for men and women. Bittman (2021) finds U-shapes without controls for 43 countries. There is a separate issue, though, which is what question each specification (with and without controls) is addressing. As noted above there are two broad ways to analyze the paper's scientific issue within this cross-section tradition. Blanchflower and Oswald (2019) noted that "it is not natural to see either approach as the 'right' or 'wrong' 12 In the raw data in the GSS if we score happiness on a 1-3 scale, happiness by age is as follows 18 one". The reason is that they measure different things. In this paper we present results both ways. One set of writings has attempted to study raw numbers on well-being and age-a descriptive approach. A second, including , has examined the patterns in regression equations for well-being, a ceteris-paribus analytical approach. The latter kind of methods are standard in epidemiology and economics, where the tradition has been to try to understand the impact of an independent variable (smoking, income, etc.) after adjusting for other influences on the dependent variable. The descriptive approach measures the 'total', or reduced-form, effect of age. In contrast, the ceteris-paribus analytical approach measures the marginal effect of age after controlling for other socio-economic influences. For example, as people move from their 20 s to their 50 s, they typically become richer. Say, for illustrative purposes, they also become happier. The descriptive approach would then ascribe the possible rise in their happiness over that period as due to age. The analytical approach would divide the possible rise in happiness into two components-that coming from income per se and any residual effect from ageing per se. Blanchflower and Oswald (2009) gave the example of the relation between smoking and the probability of lung cancer. One set of estimates would look at the raw relation between smoking and disease probability, while the second adjusted for smoking plus diet, education, income and exercise. Compared to non-smokers, smokers tend to have worse diets and less education, income, and exercise. Thus, Blanchflower and Oswald argue, and we concur, "if the aim is to describe the data, it is reasonable to leave out most or all control variables. ' There is a comparable issue in wage analysis. Assume a comparison of whether public sector workers are paid more than comparable private sector workers. We used 2019 Merged Outgoing Rotation Group Current Population Survey data, which is used to calculate a host of U.S. labor market variables (http:// data. nber. org/ cps/), and regressed log weekly earnings only on a public sector variable for a sample of 154,512 workers. The public sector variable has a statistically significant and positive with a coefficient of + 0.1533 with a t-statistic of 27. This shows that public sector workers earn more than private sector workers. Yet public sector workers are more qualified than private sector workers, so it is appropriate to control for highest grade of education completed. Including a set of highest education variables as controls, the public sector variable becomes negative with a statistically significant negative coefficient of -0.0212 and a t-statistic of 4. The adjusted R-squared in the first equation is 0.0046 in the first 0.1728 in the second, which means adding the education variables improves the fit of the equation. The higher pay of public sector workers in the raw data is attributable to their education, revealed by including controls, not to working in the public sector. Both sets of estimates, with and without controls, are useful and tell us different things. Below we show that the Office of National Statistics (ONS) in the UK publishes raw estimates of well-being variables as well as ones from regression equations with sets of controls using cross-section data. Both are useful. In what follows we report estimates with and without controls to determine to what extent they make a difference on 3.5 million people. We look at micro-data on three different measures of happiness-4-step and 11-step life satisfaction, Cantril's 11-step life satisfaction ladder using three major surveys-the Eurobarometers (1980-2019), the Gallup World Poll (2005-2019) and the Annual Population Survey for the UK from 2016-2019. We find widespread evidence of U-shapes in well-being whether controls are included or not. We also look at recent evidence for the US on anti-depressant medications as a validation of the happiness data, using data from the US Census Bureau for 2021, which traces out an inverted U-shape in age. Hudomiet, Hurd and Rohwedder (2021) from the Rand Corporation used longitudinal data from the US Health and Retirement Survey (HRS) and confirmed that life satisfaction rose from around age 50 to sixty-five, consistent with findings of U-shapes. "We pooled the 2008-2016 HRS waves to find average life satisfaction by age from age 51 to 89 (Fig. 1) . The patterns are consistent with the literature in that life satisfaction monotonically increases after age 51. The increase is steepest between age 57 and 65 around the time when most individuals retire. After age 65 the increase is more modest, from 3.89 at age 65 to about 3.96 at age 89, a statistically significant increase:" another U-shape. They show that after age sixty-five, once mortality selection bias is adjusted for, life satisfaction declines after the U-shape. In our empirical analysis, we largely restrict our analysis to under age seventy. 1 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 No controls As background we start in Table 1 by summarizing 73 studies that we identified that were published in Social Indicators Research that found U-shapes in age in well-being. In most cases this involved finding both age and age squared terms to be significantly different from zero, with a negative and a positive coefficient respectively, in well-being equations. Of these 73 studies GKJL1 identified only four papers examining U-shapes from Social Indicators Research. Blanchflower and Graham (2021a) noted that of these, based on direct quotes from the papers Dolan et al. (2017) was wrongly classified by GKJL1 as not finding U-shapes when it did. Xing and Huang (2014) were classified as a 'no' when, it should Table 1 73 studies in social indicators research finding U-shapes in wellbeing by country and group have been classified as having found a U-shape. Ferrante (2017) and Li (2017) were classified as 'mixed' findings, but they also found U-shapes based on the authors own published statements. There were 53 additional papers in Social Indicators Research that fitted the GKJL1 criteria of being published in a peer-reviewed journal in English between 2013 and 2019 that they didn't include in their survey. It remains unclear why they didn't identify these papers. Sixteen were published in Social Indicators Research from 2008-2012 and four were published in 2020 and 2021. Table 1 shows that twenty papers focused on multiple countries. U-shapes were found in nineteen distinct countries 13 . There are fifteen papers that found U-shapes for China; seven for the UK and six for Germany. Thus, even in the papers published in this journal (Social Indicators Research), the evidence of U-shapes is generalizable and robust. It is unclear why GKJL1 and GKJL2 missed these 68 papers 14 . As noted earlier several studies of well-being in the psychology literature cited Inglehart (1990) as not finding a U-shape in happiness. Inglehart reported U-shapes in happiness in nine of the sixteen countries examined in his Tables 7.3-7.5. He used data from Eurobarometer #13-#26 (April 1980-November 1986) on twelve European countries. These data are available in the Mannheim trend file and so in Table 2 we report three sets of estimates. First, we examine life satisfaction as reported in his Table 7 .3-this is the standard Eurobarometer 4-step question (n = 97,970). Q1. On the whole, are you very satisfied, fairly satisfied, not very satisfied or not at all satisfied with the life you lead? Very satisfied = 4; Fairly satisfied = 3; Not very satisfied = 2; Not at all satisfied = 1. We then turn to 3-step happiness which has half as many observations (n = 49,836). Q2. Taking all things together, how would you say things are these days-would you say you're very happy = 1, fairly happy = 2 or not too happy-3 these days? In part 1) of the table we report on the results of estimating country level equations with the same data that contains year dummies plus age and its square. We also report an overall equation that includes country dummies that has a midpoint of 47 there are significant U-shapes in 9/12 countries. Adding controls in part 2) there are significant U-shapes in all twelve. We then go to part 3) when we use the happiness variable with controls and there are U-shapes in all twelve again. To get a sense of the scale of the drop, in the raw data life satisfaction was 3.24 at age 15 falling to 2.95 at age 48. Being married had an average score of 3.08 versus 2.93 for widowed, so the drop, in life satisfaction to midlife was double the drop from losing a spouse. Hardly trivial. Diener and Suh (1998) cite work by Okma and Veenhoven (1996) , henceforth OV that does not seem to have ever been published and we have not been able to find a copy, but which according to Diner and Suh also used the Eurobarometer for 8 nations in the Eurobarometer between 1980 and 1990. They argue that Okma and Veenhoven "showed an almost flat line with age. From around age 18 to 90 there was almost no change in life satisfaction". So, we went back to analyze these same Eurobarometer files for 1980 through 1990 which are also part of the publicly available Mannheim Trend file. They cover Eurobarometer #13 through #34.1, noting that not all the surveys over this period contain the life satisfaction question. It is unclear which eight nations were the focus of the OV study, so we examine nine nations for which there are at least 20,000 observations over this time period-France; Belgium; Netherlands; Germany; Italy; Denmark; Ireland: UK and Greece so there are 207,558 observations in total 15 . The life satisfaction question is the same as that used in Q1 above. Across these nine nations the average score for those under 20 was 3.14, reaching a low point of. 2.97 at age 54 and then rising to 3.20 at age 90. It is true that life satisfaction scores at age 90 are not that different from age 18 but that ignores the midlife drop. Without out controls there is a well-defined nadir in well-being in age controlling for year and nation that minimizes at age 48 and also one with controls-for gender, education, marital and labor force status-that minimizes at age 43. 15 Diener and Suh claim there were 300,000 observations but we were unable to confirm that. It seems then that Diener and Suh (1998) were incorrect, claiming there was a flat line in age from age 18 to 90 across these nations. The decline in life satisfaction from under 20 to age 48 of 0.17 is about the same as a fall in life satisfaction of 0.16 from married (3.10) to widowed (2.94). Not trivial. Finally, we examined a pooled Eurobarometer files from 2009-2019 used in Blanchflower and Clark (2019) with around 1 million observations covering 37 European countries. We estimated life satisfaction regressions which included single year of age dummies as well as year and country dummies. In Fig. 1 we plotted these results and then we reestimated adding controls for gender, education, labor force and marital status. There are U-shapes with and without controls. GKJL2 suggested that they had become aware of additional relevant studies, including ones that used Eurobarometer data. (2020) showed. They also failed to note that in a published response to that exact paper Blanchflower (2020a) showed that the M-shape arises because of the exclusion of happy students 16 . Once the students are included the U-shape reappears. Morgan and O'Connor (2020) concur. "However, we agree with Blanchflower that the M-shape arises in the general population of our study as a result of excluding students from the sample." GKJL2 also ignored the Morgan and O'Connor's (2020) conclusion. "While we may presently describe the evidence differently than Blanchflower, this distinction is not so large. If in his recent work Blanchflower (2020b), he concluded psychological well-being generally reaches a minimum in midlife, rather than the U-shape is everywhere, we would have had a hard time disagreeing." QED. Hungary 69 59 40 38 Iceland 57 51 India 65 Indonesia 59 35 37 Iran 61 55 46 48 Iraq 47 53 55 Ireland 43 48 Israel 69 47 48 Italy 64 27 Ivory Coast 56 49 48 61 Jamaica 51 53 44 38 Japan 64 29 Jordan 54 48 51 51 Kazakhstan 65 51 44 Kenya 57 Kosovo 58 47 45 Kuwait 38 37 42 40 Kyrgyzstan 64 50 58 54 Laos Latvia 38 Latvia 43 42 Lebanon 65 60 50 51 Lesotho 70 59 61 58 Liberia 54 53 Libya 42 42 37 39 Lithuania 68 46 48 Luxembourg 52 36 33 Macedonia 69 62 51 52 Madagascar 51 44 49 49 Malaysia 48 Mali 70 42 Malta 62 53 31 29 Mauritania 52 We found significant U-shapes in life satisfaction and hills in stress in one or more of the four sets of results in 155 countries (Table 3) , averaging at age 51. For life satisfaction without controls we found a significant U-shape in 76 countries and in 118 with controls. In the case of stress, there were hill shapes in 116 and 107 countries respectively. Contrary to JMTD's conclusion that "much about the U shape has been overblown" using the same data we find broad evidence of U-shapes with and without controls across many countries. This is consistent with findings in Blanchflower (2020a, 2020b). Table 4 reports official estimates of well-being by age as reported by the UK's Office of National Statistics (ONS), the UK's largest independent producer of official statistics and its recognized national statistical institute. It is responsible for collecting and publishing statistics related to the economy, population and society at national, regional, and local levels and also conducts the Annual Population Survey and release to the public the micro data that we use in this section. Data are available for four measures of well-being-life satisfaction; happiness; worthwhileness and anxiety. The first three of these shows declines through midlife with through from youth to the age group 50,054 and a subsequent pick up. The latter variable anxiety shows a rise to a peak also in the age group 50-54. Table 5 then reports the coefficients on a group of size age variables and a long list of control variables which also show a low point in the fifties for the first three well-being measures and a peak for anxiety. The ONS in the UK confirms there is a U-shape in the well-being data. GKJL2 argue that: "mean levels alone, however, do not provide important information about variability in happiness at any given age." What matters they claim unusually, is something else. This is another red herring. It makes no difference whether we look at means or other parts of the distribution; the answer is the same: there are U-shapes. GKJL2's state that it is incorrect to conclude that the results from econometric analysis apply to every person, and that instead the focus should be on how individuals are different -"some people are stable, some increase, and some show a decrease in midlife". Yet without large N statistical analysis and then randomized controls trials that allow for the testing of different practices and policies in a range of settings, we would not have cures for cancer or successful vaccines. In all cases a variable of interest has a mean and a distribution around it and there can be outliers which may or may not be important. That regularity does not assume that all outliers do not matter, it simply establishes the general patterns. That is the approach that economists also take to establish robust patterns as well as, when possible, the direction of causality. That is almost impossible to do with an N of 1 or even an N of 100. Ignoring robustly established empirical patterns and their implications-such as the U shape-and simply focusing on a few individuals and making generalizations, in our view, is a dangerous mistake and certainly not robust social science. We illustrate this point with further analyses of life satisfaction using the APS data. The life satisfaction question was: Mean scores at age 51 are around two thirds of a log satisfaction point lower at age 50 than at age 16. Even at the peak at age sixteen some teenagers report low scores, while at the minimum of the U-shape some report high scores. But more importantly, on average, at age 16 there are fewer low scores and more higher scores while at age 50 there are fewer high scores and more low scores. For example, 2.54% of those age 16 had scores of 4 or less versus 6.30% of those age 50. Analogously, 21% of those aged sixteen scored 10 versus 11% of those age 50 (Fig. 2) . Figure 3 illustrates that the paths of both the high and low scores shows a midlife crisis. It plots the proportion with a low score (0-2), which shows a peak in midlife. It also plots the proportion with the high score of ten, which reaches a low in midlife. In the former case as individuals age and happiness falls, a higher proportion are in the lowest four categories and a lower proportion are in the highest category. Thus, focusing on the tails not just the mean also shows a midlife low in wellbeing. The U-shape is even more apparent, without the early hill in the 30's when sensible controls are used. This dismisses the claim that this is all about averages and people at the tails are different; it turns out they are not. Of course, using non-random, non-representative samples of 123 people may find something different, but that is not statistically or econometrically appropriate (Table 6 and 7) . As we did in Table 8 using the Eurobarometers in Table 9 we report the same by regressing life on a set of single year of age dummies using these APS data for the UK for those age under seventy. Sample size is around a third of a million respondents. GKJL2 try to hide the existence of the U-shape by redrawing the life satisfaction data for the UK in their Fig. 1c on a bigger scale to try to make the U-shape go away. This is illustrated in Fig. 4a and b. GKJL2 argued that it was appropriate to do this as they could make the U-shape look like a straight line! "Thus, we examined that graph … and noticed that BG severely truncated the y-axis with a range from 7.0 to 8.5 on an 11-point scale. On that truncated scale, the pattern looks like a U. When replotted to represent a larger portion of the distribution that includes the range of likely responses on the … (0 to 10) , the data look more like a straight line." It looks like a U because it is a U. Changing scales won't hide this reality. The U-shape is not a straight line as Table 9 shows. It plots the coefficients of the single year of age variables in regressions with and without controls. This is exactly comparable to the official estimates of U-shapes reported by the ONS in Tables 4 and 5 . 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 .0218 (10.14) .0206 (9.45) Dec 9-21 .0229 (10.53) .0229 (10.55) .0210 (9.53) Jan 6-18 .0152 (6.89) .0153 (6.96) .0139 (6.21) Jan 20-Feb 1 .0169 (8.07) .0176 (8.41) .0158 (7.44) Feb [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] .0166 (7.81) .0172 (8.10) .0152 (7.07) Feb 17-March 1 .0153 (7.21) .0160 (7.59) .0146 (6.80) .0141 (6.62) .0146 (6.89) .0130 (6.05) .0109 (5.12) .0116 (5.45) .0104 (4.83) Excluded category Hispanic and August 9-31, 2020 US Census Bureau Household Pulse Survey, Weeks 13-33 Table 7 (continued) April [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] .0136 (6.11) .0140 (6.34) .0141 (6.24) April 28-May 10 .0153 (7.19) .0156 (7.37) .0151 (6.94) May [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] .0181 (8.32) .0186 (8.55) .0172 (7.73) May 26-June 7 .0142 (6.44) .0147 (6.70) .0137 (6.13) The T-statistics are testing whether the individual age coefficient is statistically different from the excluded category, age sixteen which is set to zero. Every single one is, other than age seventeen, with t-statistics greater than two. In the case of age 50, which is the lowpoint of the U-curve, the coefficient of −0.68 observed above has a t-statistic of ten. Given that finding the next question is whether the decline from youth to midlife low is small or large, trivial or substantial. It is large. GKJL2 ask "how consequential is a difference between 7.9 and 7.2 on a 10-point scale, particularly when this range illustrates quite high life satisfaction well above the midpoint?" They even go as far as to claim, without any foundation, "generalizing from small age differences…to reach conclusions about a universal crisis in midlife is misleading". It is not clear to us how this claim is misleading given that in addition to our evidence we present here a total of 380 published papers support its existence. In the APS data, the decline in life satisfaction from being married with spouse present (8.03) to being separated (7.00) on the 0-10 scale is 1 life satisfaction point. The drop from employed (5.56) to unemployed (4.82) is 0.74 points. The drop from age 16 as we noted above is two thirds of that. The drop from employed (7.79) to unemployed (6.81) is 1.08 life satisfaction points. The answer is highly consequential. Table 6 presents new data also reported by the ONS that helps us determine whether loneliness; sadness; stress; pain; strain, depression and bad nerves; phobias and panic; being downhearted; having restless sleep; losing confidence in oneself; not being able to overcome difficulties; being under strain; being unhappy; feeling a failure; feeling left out; feeling tense; and thinking of yourself as a worthless person. It turns out that the taking anti-depressant medications follow a similar path. The US Census Bureau has been conducting Household Pulse Surveys since April 24th, 2020, looking at various aspects of well-being since the arrival of COVID. Micro-data are released two weeks after the publication of the main data tables. The variable of particular interest is on the taking anti-depressants. Taking of antidepressants is, by a kind of revealed preference, a potentially informative signal of mental distress, both about the person taking them and, more broadly, potentially about patterns in society at the aggregate level. This follows work by Blanchflower and Oswald (2016) , who examined data on taking of anti-depressants in EU countries and found an inverted U-shape. They found that one in thirteen Europeans have taken an antidepressant in the previous twelve months. The rates of anti-depressant use are greatest in Portugal, Lithuania, France and the UK. Here we examine similar data for the first time in the U.S. on whether an individual took anti-depressants over the last month. Q7. Over the prior four weeks have you taken prescription medications to help with any emotions or with your concentration, behavior or mental health?" We have micro data available in twenty-one surveys from week #13 August 19 th -31st through week #33 June 23 rd -July 5th 19 . Overall, the weighted data suggests that is true of 20.8% of those who answered. The issue is whether the taking of prescription medications also has an inverted U-shape in age; the answer is that it does. Table 7 , with a sample size of over 1.4 million, illustrates that this is the case whether controls are included or not. The dependent variable is 1 if the respondent takes prescription medications, zero otherwise. Controls in column 1 race, gender and state plus age and interview data dummies. In column 2 education and marital status dummies are added and income is added in column 3. IN all three specifications taking of anti-depressants peaks in middle age: in columns 1 and 3 in the age range 5-49. In column 2 ages 40-44 and 45-49 are not significantly different from each other. Of note is the probability of taking anti-depressant medications peaks just after the presidential election of November 20 th , 2020. It has fallen sharply since then and by June 2021 was below its level in August 2020. There is an inverted U-shape in age in anti-depressant taking in the United States. An early psychology literature argued that there was no relationship between well-being and age. This appears to have been based on studies that included a handful of people with tiny sample sizes. Even where there was evidence of a U-shape, it was denied in the literature. We reworked a few of these studies using same data and showed there were U-shapes, and their scale was large and comparable to the loss of a spouse, or a job. Some studies have failed to find U-shapes but generally they have been based on small sample sizes, In addition to our findings of U-shapes using life satisfaction data from the Eurobarometer we also looked at Cantril's ladder of life satisfaction in the Gallup World Poll data and found U-shapes with and without controls for an additional 64 non-European countries. We found similar U-shapes for the UK from the Annual Population Surveys. Two more recent papers (Galambos et al., 2020 (Galambos et al., , 2021 suggested there was little evidence of U-shapes based on a literature review of 28 papers. We showed that that the authors had misclassified many of these paper's findings. Indeed, after misclassifications have been accounted for and ineligible studies dropped, B&G found that there were zero that didn't find any evidence of U-shapes. Of the 28 papers 21 found U-shapes and three had mixed evidence while four had to be excluded as they did not set the criteria set by GKJL1; of note is that GKJL2 did not dispute any of these re-classifications. We have also identified an astonishing 387 additional papers that the authors had ignored that did find U-shapes, making 403 in total. Indeed, we count a total of 373 published in a vast array of peer-reviewed journals in English, including 73 in this journal alone, that find U-shapes, which was the main criterion the authors set for examination. When this was pointed out to the authors by us in an earlier paper (Blanchflower & Graham, 2021a ) the authors claimed that they did not set out to do an exhaustive review because they "wanted to show support for the view that not all researchers find the U shapes". Hence, their analysis is advocacy not science. There is a U-shape in well-being in midlife. On the basis of this evidence, it is clearly inappropriate to dismiss the literature on the U-curve as "overblown" or the scale of the effects as trifling, inconsequential or even "trivial". We have shown that the effects of the mid-life dip are comparable to major life events like losing a spouse or a job. We show that the drop from teenage years to the midlife low is about half the size of the unprecedented drop in life satisfaction that occurred during the COVID19 pandemic. Beyond being empirically interesting, there are implications for substantial parts of the world's population. These dips in well-being are associated with higher levels of depression, including chronic depression, difficulty sleeping, and even suicide. In the U.S., deaths of despair are most likely to occur in the middle-aged years, and the patterns are robustly associated with unhappiness and stress. Across countries chronic depression and suicide rates peak in midlife. The mid-life dip in well-being is robust to within person analysis, also exists with the prescribing of anti-depressants and it extends beyond humans. The evidence comes from both longitudinal and cross-section data, which complement one another, as noted in a recent report by The Lancet's COVID-19 Commission Mental Health Task Force. It remains puzzling then why some psychologists continue to suggest that well-being is unrelated to age. Based on the significant evidence we present, the decline in mid-life well-being seems real and consequential and has robust linkages to other serious markers of ill-being. The mid-life dip is real, it applies to most of the world's population, excepting countries in which it is very difficult to age-such as those with very high levels of absolute poverty and conflict and low levels of life expectancy. It links to behaviors and outcomes that merit the attention of scholars and policymakers alike. These include rising rates of despair and reported pain among the middle-aged in many rich countries and associated premature mortality due to despair-related deaths, and some similar if less well documented patterns in developing economies. Among other things, more public awareness of how common this mid-life dip is might help those navigating its worst manifestations to make it through to a happier and longer life. The overwhelming evidence from four hundred and nine papers, and counting, as well as the evidence presented here, support the conclusion that there is a midlife low in wellbeing. This is among the most striking, persistent and consistent patterns in social science. See Tables 8 and 9 . Chesters, Simona & Suder (2021) Huang Gwozdz and Sousa-Poza Tsai (2021) Mertens & Beblo Okulicz-Kozaryn & Mazelis (2017) Groups of countries 19. 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A literature review Between hoping to die and longing to live longer Evidence for a midlife crisis in great apes consistent with the U-shape in human well-being The relationship between age and subjective well-being: Evidence from five capital cities in Mainland China We thank Dan Gilbert of Harvard University for his helpful comments and advice on this project. Data Availability The Annual Population Survey is available at the UK Data Archive https:// beta. ukdat aserv ice. ac. uk/ datac atalo gue/ studi es/ study? id= 8789# !/ resou rces. Eurobarometer Surveys are available from https:// zacat. gesis. org. Household Pulse Surveys are available from the US Census Bureau. Gallup World Poll data available by subscription. Conflict of interest The authors declare that they have no conflicts of interest.