12 male rats were each given two copulation tests continued to a satiety criterion of 30 min. with no intromissions. In one test the same female was used throughout, while in the other the female was changed after each ejaculation. In addition to previously established phenomena, and independent of changes in the female, ejaculation latency and mean inter-intromission interval increased as satiety was approached. Existent models of the control of rodent copulatory behavior must be revised to account for these changes, as the development of satiety appears more complex than previously thought.
References
1.
BeachF. A.Characteristics of masculine “sex drive.” In JonesM. R. (Ed.), Nebraska Symposium on Motivation, 1956. Lincoln: Univer. of Nebraska Press, 1956. Pp. 1–36.
2.
BeachF. A.JordanL.Sexual exhaustion and recovery in the male rat. Quart. J. exp. Psychol., 1956, 7, 121–133.
3.
BeachF. A.WhalenR. E.Effects of ejaculation on sexual behavior in the male rat. J. comp. physiol. Psychol., 1959, 52, 249–254.
4.
LarssonK.Conditioning and sexual behavior in the male albino rat. Stockholm: Almqvist & Wiksell, 1956.
5.
McGillT. E.Studies of the sexual behavior of male laboratory mice: effects of genotype, recovery of sex drive, and theory. In BeachF. A. (Ed.), Sex and behavior. New York: Wiley, 1965. Pp. 76–88.
6.
PierceJ. T.NuttallR. L.Duration of sexual contacts in the rat. J. comp. physiol. Psychol., 1961, 54, 585–587.
7.
WinerB. J.Statistical principles in experimental design. New York: McGraw-Hill, 1962.
