CAS PS 241 Lecture Notes - Lecture 8: Subitizing, Object Permanence, Approximate Number System
17 Dec 2016
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Document Summary
Tasks with the same underlying logic: conversation tasks are the most famous, tests for ability follow transformations. Each task transforms one dimension of the quantity. Children lack the ability to the fact that the first and second conditions are the same. They"re focused on the wrong thing, they are thinking of psychical: seriation size. Children are unable to do multiple comparisons needed (transitivity) (a>b, b>c; then a>c) Logical, rule based ways of comparing mental representations before and after a transformation: compensation. A change in one dimension compensates for a change in another; increase in length of row is due to a space in between coins: reversibility. Changed can be reversed; can make the longer row shorter again: identity. Values of a particular dimension do not change during the transformation. Children fail these tasks because they lack the basic operators needed to pass them. The operators apply generally to many kinds of situations.
