Understanding the intentional relations in others' actions is critical to human social life. Origins of this knowledge exist in the first year and are a function of both acting as an intentional agent and observing movement cues in actions. We explore a new mechanism we believe plays an important role in infants' understanding of new actions:…

In the first of two experiments, we demonstrate the spread of a novel form of tool use across 20 "cultural generations" of child-to-child transmission. An experimentally seeded technique spread with 100% fidelity along twice as many "generations" as has been investigated in recent exploratory "diffusion" experiments of this type. This contrasted…

Studied the imitation behavior of thirty 14- to 18-month-olds using peer and adult models in an elicited imitation paradigm. Indicated significant memory for 3-step behavior sequences both immediately after modeling and 1 week later compared with baseline performance. Found that children in the peer model group outperformed children in the adult…

The research compares two open education programs in New York City (one in a private school, one a public school) from 1970 to 1976. Both programs stressed decentralization of the classroom into interest areas, individually created learning materials, and participation by children in decisions regarding use of time and space. The purpose of the…