Growth of social play with peers during the second year of life.

Multivariate Statistical Programs.

Herman Friedman, Dean J. Clyde, Elliot M. Cramer et al. · Journal of the American Statistical Association · 1968 · 126 citations

Behavior of Nonhuman Primates: Modern Research Trends

Robert R. Zimmerman, Allan M. Schrier, Fred Stollnitz · The American Journal of Psychology · 1972 · 112 citations

Life Sciences, Behavioral Sciences, Zoology +14

The Growth of Sociability

G. E. Macfarlane, H. Rudolph Schaffer · Man · 1973 · 111 citations

Social Sciences, Social Psychology, Sociology +10

Emotional Dependence and Independence in Nursery School Play

Glen Heathers · The Journal of Genetic Psychology · 1955 · 94 citations

Education, Educational Psychology, Psychology +14

Social Relations Between Children of the Same Age During the First Two Years of Life

Maria Maudry, Maria Nekula · The Pedagogical Seminary and Journal of Genetic Psychology · 1939 · 71 citations

Social Sciences, Human Development, Psychology +11