Observation - Wikipedia Observation From Wikipedia, the free encyclopedia Jump to navigation Jump to search Active acquisition of information from a primary source For other uses, see Observation (disambiguation). (Observing the air traffic in Rõuge, Estonia) Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity. Observations can be qualitative, that is, only the absence or presence of a property is noted, or quantitative if a numerical value is attached to the observed phenomenon by counting or measuring. Contents 1 Science 2 Formulate a hypothesis that tentatively answers the question 3 Paradoxes 4 Biases 4.1 Confirmation bias 4.2 Processing bias 5 Philosophy 6 See also 7 References Science[edit] The scientific method requires observations of natural phenomena to formulate and test hypotheses.[1] It consists of the following steps:[2][3] Ask a question about a natural phenomenon Make observations of the phenomenon Formulate a hypothesis that tentatively answers the question[edit] Predict logical, observable consequences of the hypothesis that have not yet been investigated Test the hypothesis' predictions by an experiment , observational study , field study , or simulation Draw a conclusion from data gathered in the experiment, or revise the hypothesis or form a new one and repeat the process Write a descriptive method of observation and the results or conclusions reached Have peers with experience researching the same phenomenon evaluate the results Observations play a role in the second and fifth steps of the scientific method. However, the need for reproducibility requires that observations by different observers can be comparable. Human sense impressions are subjective and qualitative, making them difficult to record or compare. The use of measurement developed to allow recording and comparison of observations made at different times and places, by different people. Measurement consists of using observation to compare the phenomenon being observed to a standard unit. The standard unit can be an artifact, process, or definition which can be duplicated or shared by all observers. In measurement the number of standard units which is equal to the observation is counted. Measurement reduces an observation to a number which can be recorded, and two observations which result in the same number are equal within the resolution of the process. Human senses are limited and subject to errors in perception, such as optical illusions. Scientific instruments were developed to aid human abilities of observation, such as weighing scales, clocks, telescopes, microscopes, thermometers, cameras, and tape recorders, and also translate into perceptible form events that are unobservable by the senses, such as indicator dyes, voltmeters, spectrometers, infrared cameras, oscilloscopes, interferometers, geiger counters, and radio receivers. One problem encountered throughout scientific fields is that the observation may affect the process being observed, resulting in a different outcome than if the process was unobserved. This is called the observer effect. For example, it is not normally possible to check the air pressure in an automobile tire without letting out some of the air, thereby changing the pressure. However, in most fields of science it is possible to reduce the effects of observation to insignificance by using better instruments. Considered as a physical process itself, all forms of observation (human or instrumental) involve amplification and are thus thermodynamically irreversible processes, increasing entropy. Paradoxes[edit] In some specific fields of science the results of observation differ depending on factors which are not important in everyday observation. These are usually illustrated with "paradoxes" in which an event appears different when observed from two different points of view, seeming to violate "common sense". Relativity: In relativistic physics which deals with velocities close to the speed of light, it is found that different observers may observe different values for the length, time rates, mass, and many other properties of an object, depending on the observer's velocity relative to the object. For example, in the twin paradox one twin goes on a trip near the speed of light and comes home younger than the twin who stayed at home. This is not a paradox: time passes at a slower rate when measured from a frame moving with respect to the object. In relativistic physics, an observation must always be qualified by specifying the state of motion of the observer, its reference frame. Quantum mechanics: In quantum mechanics, which deals with the behavior of very small objects, it is not possible to observe a system without changing the system, and the "observer" must be considered part of the system being observed. In isolation, quantum objects are represented by a wave function which often exists in a superposition or mixture of different states. However, when an observation is made to determine the actual location or state of the object, it always finds the object in a single state, not a "mixture". The interaction of the observation process appears to "collapse" the wave function into a single state. So any interaction between an isolated wave function and the external world that results in this wave function collapse is called an observation or measurement, whether or not it is part of a deliberate observation process. Biases[edit] The human senses do not function like a video camcorder, impartially recording all observations.[4] Human perception occurs by a complex, unconscious process of abstraction, in which certain details of the incoming sense data are noticed and remembered, and the rest forgotten. What is kept and what is thrown away depends on an internal model or representation of the world, called by psychologists a schema, that is built up over our entire lives. The data is fitted into this schema. Later when events are remembered, memory gaps may even be filled by "plausible" data the mind makes up to fit the model; this is called reconstructive memory. How much attention the various perceived data are given depends on an internal value system, which judges how important it is to the individual. Thus two people can view the same event and come away with entirely different perceptions of it, even disagreeing about simple facts. This is why eyewitness testimony is notoriously unreliable. Several of the more important ways observations can be affected by human psychology are given below. Confirmation bias[edit] Main article: confirmation bias Human observations are biased toward confirming the observer's conscious and unconscious expectations and view of the world; we "see what we expect to see".[5] In psychology, this is called confirmation bias.[5] Since the object of scientific research is the discovery of new phenomena, this bias can and has caused new discoveries to be overlooked; one example is the discovery of x-rays. It can also result in erroneous scientific support for widely held cultural myths, on the other hand, as in the scientific racism that supported ideas of racial superiority in the early 20th century.[6] Correct scientific technique emphasizes careful recording of observations, separating experimental observations from the conclusions drawn from them, and techniques such as blind or double blind experiments, to minimize observational bias. Processing bias[edit] Modern scientific instruments can extensively process "observations" before they are presented to the human senses, and particularly with computerized instruments, there is sometimes a question as to wherein the data processing chain "observing" ends and "drawing conclusions" begins. This has recently become an issue with digitally enhanced images published as experimental data in papers in scientific journals. The images are enhanced to bring out features that the researcher wants to emphasize, but this also has the effect of supporting the researcher's conclusions. This is a form of bias that is difficult to quantify. Some scientific journals have begun to set detailed standards for what types of image processing are allowed in research results. Computerized instruments often keep a copy of the "raw data" from sensors before processing, which is the ultimate defence against processing bias, and similarly, scientific standards require preservation of the original unenhanced "raw" versions of images used as research data. Philosophy[edit] "Observe always that everything is the result of a change, and get used to thinking that there is nothing Nature loves so well as to change existing forms and to make new ones like them." — Meditations. iv. 36. – Marcus Aurelius Observation in philosophical terms is the process of filtering sensory information through the thought process. Input is received via hearing, sight, smell, taste, or touch and then analyzed through either rational or irrational thought. For example, let us suppose that an observer sees a parent beat their child; and consequently may observe that such an action is either good or bad. Deductions about what behaviors are good or bad may be based on preferences about building relationships, or study of the consequences resulting from the observed behavior. With the passage of time, impressions stored in the consciousness about many, together with the resulting relationships and consequences, permit the individual to build a construct about the moral implications of behavior. See also[edit] Deixis Introspection List of cognitive biases Metaphysics of presence Naturalistic observation Observation unit Observational astronomy Observational error Observational learning Observational study Observable quantity Observations and Measurements Observatory Observer effect Present Self Theory ladenness Uncertainty principle Unobservable References[edit] Wikiquote has quotations related to: Observation Wikimedia Commons has media related to Observation. Look up Observation in Wiktionary, the free dictionary. ^ Kosso, Peter (2011). A Summary of Scientific Method. Springer. p. 9. ISBN 978-9400716131. ^ Mendez, Carl Cedrick L.; Heller, H. Craig; Berenbaum, May (2009). Life: The Science of Biology, 9th Ed. USA: Macmillan. pp. 13–14. ISBN 978-1429219624. ^ Shipman, James; Wilson, Jerry D.; Todd, Aaron (2009). Introduction to Physical Science, 12th Ed. Cengage Learning. p. 4. ISBN 978-0538731874. ^ Shaw, Julia (Aug 12, 2016). "Not all memories really happened: What experts wish you knew about false memories". Scientific American. Nature America, Inc. Retrieved August 13, 2016. ^ a b Shermer, Michael (2002). Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time. MacMillan. pp. 299–302. ISBN 1429996765. ^ Gardner, Martin (1957). Fads and Fallacies in the Name of Science. Dover Publications, Inc. pp. 152–163. ISBN 9780486131627. Library resources about Observation Resources in your library v t e Philosophy of science Concepts Analysis Analytic–synthetic distinction A priori and a posteriori Causality Commensurability Consilience Construct Creative synthesis Demarcation problem Empirical evidence Explanatory power Fact Falsifiability Feminist method Functional contextualism Ignoramus et ignorabimus Inductive reasoning Intertheoretic reduction Inquiry Nature Objectivity Observation Paradigm Problem of induction Scientific law Scientific method Scientific revolution Scientific theory Testability Theory choice Theory-ladenness Underdetermination Unity of science Metatheory of science Coherentism Confirmation holism Constructive empiricism Constructive realism Constructivist epistemology Contextualism Conventionalism Deductive-nomological model Hypothetico-deductive model Inductionism Epistemological anarchism Evolutionism Fallibilism Foundationalism Instrumentalism Pragmatism Model-dependent realism Naturalism Physicalism Positivism / Reductionism / Determinism Rationalism / Empiricism Received view / Semantic view of theories Scientific realism / Anti-realism Scientific essentialism Scientific formalism Scientific skepticism Scientism Structuralism Uniformitarianism Vitalism Philosophy of Physics thermal and statistical Motion Chemistry Biology Geography Social science Technology Engineering Artificial intelligence Computer science Information Mind Psychiatry Psychology Perception Space and time Related topics Alchemy Criticism of science Descriptive science Epistemology Faith and rationality Hard and soft science History and philosophy of science History of science History of evolutionary thought Logic Metaphysics Normative science Pseudoscience Relationship between religion and science Rhetoric of science Science studies Sociology of scientific knowledge Sociology of scientific ignorance Philosophers of science by era Ancient Plato Aristotle Stoicism Epicureans Medieval Averroes Avicenna Roger Bacon William of Ockham Hugh of Saint Victor Dominicus Gundissalinus Robert Kilwardby Early modern Francis Bacon Thomas Hobbes René Descartes Galileo Galilei Pierre Gassendi Isaac Newton David Hume Late modern Immanuel Kant Friedrich Schelling William Whewell Auguste Comte John Stuart Mill Herbert Spencer Wilhelm Wundt Charles Sanders Peirce Wilhelm Windelband Henri Poincaré Pierre Duhem Rudolf Steiner Karl Pearson Contemporary Alfred North Whitehead Bertrand Russell Albert Einstein Otto Neurath C. D. Broad Michael Polanyi Hans Reichenbach Rudolf Carnap Karl Popper Carl Gustav Hempel W. V. O. Quine Thomas Kuhn Imre Lakatos Paul Feyerabend Jürgen Habermas Ian Hacking Bas van Fraassen Larry Laudan Daniel Dennett Category  Philosophy portal  Science portal Retrieved from "https://en.wikipedia.org/w/index.php?title=Observation&oldid=996533226" Categories: Observation Aptitude Assumption (reasoning) Cognition Epistemology Epistemology of science Experiments History of education History of ideas History of philosophy History of science Knowledge Metaphysics Metaphysics of mind Mind Ontology Perception Philosophy of education Philosophy of mind Philosophy of science Scientific method Sources of knowledge Hidden categories: Articles with short description Short description matches Wikidata Commons category link is on Wikidata Navigation menu Personal tools Not logged in Talk Contributions Create account Log in Namespaces Article Talk Variants Views Read Edit View history More Search Navigation Main page Contents Current events Random article About Wikipedia Contact us Donate Contribute Help Learn to edit Community portal Recent changes Upload file Tools What links here Related changes Upload file Special pages Permanent link Page information Cite this page Wikidata item Print/export Download as PDF Printable version In other projects Wikimedia Commons Wikiquote Languages العربية Asturianu Azərbaycanca বাংলা Български Bosanski Català Čeština ChiShona Dansk Deutsch Eesti Ελληνικά Español Esperanto فارسی Français Galego 한국어 Հայերեն हिन्दी Hrvatski Bahasa Indonesia Italiano עברית ಕನ್ನಡ Latina Latviešu Bahasa Melayu Монгол Nederlands नेपाली 日本語 Norsk bokmål Norsk nynorsk Occitan ਪੰਜਾਬੀ Polski Português Română Русский Scots Simple English سنڌي Slovenčina کوردی Српски / srpski Srpskohrvatski / српскохрватски Suomi Svenska Tagalog தமிழ் ไทย Türkçe Українська Tiếng Việt Winaray 吴语 粵語 中文 Edit links This page was last edited on 27 December 2020, at 04:27 (UTC). 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