R. Collard

The Beginnings of Tool Use by Infants and Toddlers

M. E. McCarty, R. K. Clifton, R. Collard, 2001 .

Problem solving in infancy: the emergence of an action plan.

M. E. McCarty, R. K. Clifton, R. Collard, 1999, Developmental psychology.

Fear of strangers and play behavior in kittens with varied social experience.

R. Collard, 1967, Child development.

Social and play responses of first-born and later-born infants in an unfamiliar situation.

R. Collard, 1968, Child development.

Exploratory and play behaviors of infants reared in an institution and lower- and middle-class homes.

R. Collard, 1971, Child development.

Women and Black Students in College Automotive Technology.

R. Collard, J. Greer, 1999 .

Exploration and Play in Human Infants

R. Collard, 1972 .