This is a preview. Log in through your library . Abstract Gibbons have been historically overlooked in the field of comparative social and physical cognition. This study investigated the cognitive ...

You might have heard about object permanence as a developmental milestone for babies. But what is it, exactly? Object ...

A curious phenomenon has long puzzled developmental psychologists: Why do babies seem incredibly smart in some experiments yet utterly clueless when tested with other tasks designed to measure the ...

Two-year-olds' (N = 153) knowledge of solidity was tested in four search tasks adapted from infant looking-time experiments. In Experiment 1, 2-year-olds failed to search in the correct location for a ...