PSY 457LEC Lecture Notes - Lecture 8: Adequate Equivalence Relation, Order Type, Early Wynn
Document Summary
Number for infants: what do infants know about #? e. g. , 4 3 2 1. Numerosity: determining (differences in) the quantity of small sets (w/o counting) Arithmetic: sensitivity to in- & in small sets e. g. , 4 > 3 > 2 > 1. Children perform well on numerosity and ordinality tasks using small #s. Newborns differentiate btwn 2 arrays with diff # in each of them. Infants detect numerical differences in small arrays of discrete stimuli. This breaks down when the set becomes too large. Findings held using diff objects on each trial & with diff composition. Not limited to the visual (or even a single) modality. 6-8-mo -olds detect the numerical equivalence btwn objects and sounds. Infants look longer at stimuli containing the same # of objects as the # of drum beats presented. Suggests that infants can relate the # of entities in 1set to the # in another set cross-modally (even w/o natural relation)
