1. Bates, J.E. The concept of difficult temperament. Merrill-Palmer Quarterly, 1980, 26, 299–319.
2. Bell, R.Q. Adaptation of small wristwatches for mechanical recording of activity in infants and children. Journal of Experimental Child Psychology, 1968, 6, 302–305.
3. Berscheid, E., & Walster, E.H. Interpersonal attraction (2nd ed.). Reading, MA: Addison-Wesley, 1978.
4. Block, J.H. Conceptions of sex role: Some cross-cultural and longitudinal perspectives. American Psychologist, 1973, 28, 512–526.
5. Buss, A.H. The psychology of aggression. New York: Wiley, 1961.