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Science 1 December 1978:
Vol. 202. no. 4371, pp. 995 - 996
DOI: 10.1126/science.568823
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Articles

Science, Vol 202, Issue 4371, 995-996
Copyright © 1978 by American Association for the Advancement of Science

articles

Child spacing and birth order: effect on intellectual ability in two-child families

L Belmont, Z Stein, and P Zybert

The effect on intellectual ability of the spacing of the birth of siblings was studied in two series of young men from two-child families: (i) 535 pairs of brothers and (ii) 1511 unrelated firstborn and secondborn. Birth-order effect and level of ability were not influenced by length of interval between firstborn and secondborn.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Brothers and Sisters: Meeting Special Needs.
P. A. Gallagher and T. H. Powell (1989)
Topics in Early Childhood Special Education 8, 24-37
   Abstract »    PDF »
Birth Order and Educational Attainment in Full Sibships.
R. M Hauser and W. H Sewell (1985)
American Educational Research Journal 22, 1-23
   Abstract »    PDF »
Chapter 7: Family Influences on Cognitive Development and School Achievement.
D. Scott-Jones (1984)
Review of Research in Education 11, 259-304
   PDF »
An Empirical Study of the Zajonc-Markus Hypothesis for Achievement Test Score Declines.
G. J. Melican and L. S. Feldt (1980)
American Educational Research Journal 17, 5-19
   Abstract »    PDF »


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