The communicative context of object manipulation in ape and human adult-infant pairs

A Coefficient of Agreement for Nominal Scales

Jacob Cohen · Educational and Psychological Measurement · 1960 · 41.3K citations

Education, Educational Assessment, Educational Measurement +8

The Behaviour of Free-living Chimpanzees in the Gombe Stream Reserve

Jane Van Lawick-Goodall · Animal Behaviour Monographs · 1968 · 1.6K citations

Life Sciences, Biology, Zoology +12

Behavior of Nonhuman Primates.

Charles H. Southwick · PubMed Central · 1966 · 567 citations · Full text

Life Sciences, Behavioral Sciences, Biology +7

Maternal Stimulation and Infant Exploratory Competence: Cross-Sectional, Correlational, and Experimental Analyses

Jay Belsky, Mary Kay Goode, Robert K. Most · Child Development · 1980 · 198 citations

Education, Human Development, Psychology +13

Development of manipulations with objects in ape and human infants

Jacques Vauclair, Kim A. Bard · Journal of Human Evolution · 1983 · 78 citations

Education, Human Development, Psychology +12