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by Professor Normal
Wed Sep 28, 2011 10:35 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0957: "Development"
Replies: 87
Views: 23788

Re: 0957: "Development"

Definitely American Psychological, Jean Piaget has a scale of levels of development. The scale for infants (miss you ap psych) had a fifth level which involves trying new things with objects and the environment, not sure if he's referencing that or just the scale in general (as there are 4 main lev...

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