1. Within group and between group variation expected in human behavioral characteristics;Allen;Behav. Genet.,1970
2. Manual for the Differential Aptitude Tests;Bennett,1959
3. Iris pigmentation and sex as a predictor of psychological-sexual arousal as a function of viewing erotic slides;Brownlee,1980
4. The Measurement of Personality;Eysenck,1976
5. The Structure and Measurement of Intelligence;Eysenck,1979