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Lecture 6

Psychology 2410A/B Lecture Notes - Lecture 6: Habituation, Continuity Equation, Individuation

Course Code
Adam Cohen

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Lecture 6: Monday, February-25-13
Outline Last Time
- Object concept: Piaget…criticisms, competence/performance distinction, VOE method
(experiments revealing early competence), explaining A-not-B error (memory, inhibitory control,
- Intuitive physics: solidity principle, continuity principle, contact principle
- Event categories: support eventsvariables, contact/no contact, type of contact, amount of
Object Knowledge  Intuitive Physics
o Individuation (OTS)
physical principles (PRS)
o Identification (ORS)
Event categories (PRS)
- You constantly see objects interacting with each other. For example, you see a water bottle
sitting on a table and expect it to be supported and not pass through the table. The kinds of
variables related to this concept are picked up over the first few years.
Support Events
- Category specific variables
Contact/no contact
Type of Contact
Amount of Contact
> 3 months
> 5 months
> 6 ½ months
Babies under three
months old don’t
have this, they do as
they get older
(looking time for no
contact is greater
than for contact)
Babies under 5
months don’t
understand that type
of contact matters
(looking time for
short platform is
Babies that are 6 ½
months or older are
more surprised by
inadequate contact
(longer looking times
vs. for adequate
object times)
- Babies slightly older than 3 months were not surprised when the object was pushed of the table.
They concluded that the baby must be thinking that the finger (which pushed the box off the
table) was actually attached to the object. When they pushed the object off the table and then
removed the finger, they were surprised.
- See page 25 in textbook
- Piaget underestimated the knowledge babies have about numbers.
- Things: rocks, tables, chairs.
- Things that are about other things: photos, map, story, number (symbolic), language/words,
mental states
- Show a screen with a set of dots on each side of the screen, and you had to guess which side
had more. You don’t have time to count the dots. How are you able to accurately to know which
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