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Diedrich, Frederick J.; Highlands, Tonia M.; Spahr, Kimberly A.; Thelen, Esther; Smith, Linda B. – Journal of Experimental Child Psychology, 2001
Evaluated in three experiments a dynamic systems theory account of perseverative errors on "A-not-B" task. Found that 9-month-olds perseverated when reaching for identical targets, but made nonperseverative responses when reaching in the presence of a highly distinctive B target. Reach direction was jointly determined by target's…
Descriptors: Cognitive Development, Cues, Error Patterns, Infant Behavior