id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-269716-x3b0qphd	Hopper, Lydia M.	Problem solving flexibility across early development	2020-08-26		.txt	text/plain	10183	463	58	For all children and action sequences used, in the first trial of Phase 2, 7 of the 20 2year-olds (35.00%), 14 of the 22 3-year-olds (63.64%), and 13 of the 19 4-year-olds (68.42%) used the (newly available) most efficient method (i.e., they removed only the lower two of five straws from the tube), highlighting their recognition of the changed task demands. In spite of this, after correcting for multiple comparisons, post hoc pairwise comparisons revealed no significant difference across age groups when comparing the numbers of children whose responses in the first trial of Phase 2 responses were efficient: 4-year-olds versus 2year-olds, t(35.92) = À2.41, p = .021, 95% CI [À0.68, À0.06]; 4-year-olds versus 3-year-olds, Considering all 4 trials that children completed in Phase 2, on average children removed significantly fewer straws per trial in Phase 2 than they did in Phase 1, highlighting their understanding of the changed task demands.	./cache/cord-269716-x3b0qphd.txt	./txt/cord-269716-x3b0qphd.txt