1. Abada, A. A. (1984).Relationships Between Some Creativity Factors, Academic Specialization and Sex for Faculty of Education Students, Unpublished Ph.D. dissertation, Faculty of Education, Minia University, Minia, Egypt.
2. Abdel-Rahim, A. R., Nagoshi, C. T., Johnson, R. C., and Vandenberg, S. G. (1988). Familial resemblances for cognitive abilities and personality in an Egyptian sample.Pers. Individ. Diff.
9:155–163.
3. Abdel-Salaam, N. (1974).The Components of Verbal Ability, Unpublished Ph.D. dissertation, Women's College, Ain Shams University, Cairo, Egypt.
4. Badary, A. H., and Rahim, A. R. (1984).Kit of Factor-Referenced Cognitive Tests: A Licensed Translation into Arabic, Dar Heraa, El-Minia, Egypt.
5. Cederlof, R., Friberg, L., Jonsson, E., and Kay, L. (1961). Studies on similarity diagnosis in twins with the aid of mailed questionnaires.Acta Genet.
11:338–362.