Qualitative levels in children's vocabularies.

Rank Correlation Methods.

M. G. Kendall · Biometrika · 1957 · 6.4K citations

Natural Sciences, Mathematics, Psychometrics +14

The Child's Conception of Physical Causality

J. P., Jean Piaget, Marjorie Gabain · The American Journal of Psychology · 1932 · 1.2K citations

Social Sciences, Behavioral Sciences, Psychology +7

Qualitative differences in the vocabulary choices of children as revealed in a multiple-choice test.

Lorraine Kruglov · Journal of Educational Psychology · 1953 · 16 citations

Education, Educational Psychology, Psychology +12

FREQUENCY COUNTS AND THEIR USES

John Nisbet · Educational Research · 1961 · 11 citations

Business, Computer Science, Statistics +9