Premium
INTELLIGENCE AND FAMILY SIZE, 1949–1965
Author(s) -
NISBET J. D.,
ENTWISTLE N. J.
Publication year - 1967
Publication title -
british journal of educational psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.557
H-Index - 95
eISSN - 2044-8279
pISSN - 0007-0998
DOI - 10.1111/j.2044-8279.1967.tb01927.x
Subject(s) - psychology , test (biology) , verbal reasoning , developmental psychology , regression analysis , regression , statistics , cognition , mathematics , paleontology , neuroscience , psychoanalysis , biology
S ummary . An age‐group of 2,868 Aberdeen school children has been tested at ages 7, 9, 11 and 12, on verbal reasoning, non‐verbal reasoning and attainment tests. The relations between family size and test score were expressed as regression coefficients. The usual inverse relationship between family size and test score was observed. Regression coefficients from the verbal tests were larger than from the non‐verbal. Consistently larger regression coefficients were obtained for girls than for boys. Within social classes I and II, regression coefficients were smaller than within the other social classes. The results are interpreted as evidence of environmental influence on test scores. Results obtained from previous investigations in Aberdeen are compared with those obtained in the present study.