References
- Cattell , R. V. and Cattell , M. 1969 . Handbook for the Junior-Senior High School Personality Questionnaire (HSPQ) , Champaign, Ill. : Inst. Personal. & Ability Testing .
- Kerlinger , F. and Rokeach , M. 1966 . The factorial nature of the F and D scales . J. Personal. & Soc. Psychol. , 4 : 391 – 399 .
- Koch , H. L. 1954 . The relation of “primary mental abilities” in five-and six-year-olds to sex of child and characteristics of his sibling. Child . Devel. , 25 : 209 – 223 .
- Nuttall , R. L and Nuttall , E. V. 1975 . Family size and spacing in the United States and Puerto Rico , Chestnut Hill, Massachusetts : Laboratory for Statistical and Policy Research, Boston College . Unpublished manuscript
- Rosenberg , B. G. , Goldman , R. and Sutton-Smith , B. 1969 . Sibling age spacing effects of cognitive ability in children . Proc. 77th ann. conven. Amer. Psychol. Assoc. 1969 . pp. 261 – 262 . 4, (1)
- Smith , G. 1974 . The test of effective academic motivation , Boston, Massachusetts : Harvard Medical School, Department of Anesthesia, Massachusetts General Hospital . Unpublished paper
- Sutton-Smith , B. and Rosenberg , B. G. 1970 . The Sibling , New York : Holt .
- Zajonc , R. B. and Marcus , G. B. 1975 . Birth order and intellectual development . Psychol. Rev. , 82 : 74 – 87 .