PSYCH211 Lecture Notes - Lecture 7: Parallel Individuation System, Dishabituation, Cardinality
17 Apr 2018
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Dishabituation in presentation of 25 dots after habituated to 8 dots. Wouldn"t work if the ratio was closer like 8 vs 10. Rabbits behind screen (should be 2; presented 1 or 3 in other trials) Babies should look longer when presented 1 or 3. All sets of n objects have something in common. Infants sensitive to amounts for 1, 2, 3 objects. Same for # of events (eg 2 hops, but if it hops 3 times they look longer; surprised) Infants sensitive to some kind of quantity rather than actual number. Two magnitude systems in infants for keeping track of number before having number knowledge: numbers 1-3 (eg mental pointers); just know how the amount looks without having to think much about it. Know if person said eg 1, 23, 4. Eg 1, 3, 2, see if they know that it was in wrong order. Idiosyncratic (unique to them) but stable count order (eg 1, 2, c, 4, 5)
