THE EFFECTS OF CONFLICT AND STRESS ON SEXUAL AND AGGRESSIVE BEHAVIOUR IN MALE MICE

LAGERSPETZ, K. & HYVARINEN, S. The effects of conflict and stress on sexual and aggressive behaviour in male mice. Scand. J. Psychol. , 1071, 12, 119–127. –A conflict consisting in a conditioned response performed in order to drink, coupled with electric shocks, did not affect aggressive and sexual behaviour in a neutral environment. Conditioning only or shocks only also did not have any effects. When tested in the shuttle box, the groups showed differences in behaviour. A generally higher level of activation was shown by the experimental groups. The results are discussed in terms of the concept of 'experimental neurosis'.     

THE EFFECTS OF SOCIALLY-INDUCED AGGRESSIVENESS OR NONAGGRESSIVENESS ON THE SEXUAL BEHAVIOUR OF INEXPERIENCED MALE MICE

H autojävi , S. & L agerspetz , K. The effects of socially-induced aggressiveness or nonaggressiveness on the sexual behaviour of inexperienced male mice. Scand. J. Psychol ., 1968, 9, 45–49.—High aggressiveness induced by repeated victories over another mouse was found to decrease sexual behaviour of male albino mice. Nonaggressiveness induced by defeats in fights did not affect the level of sexual activity as compared with that of the control animals.     

THE EFFECT OF PRIOR AGGRESSIVE OR SEXUAL AROUSAL ON SUBSEQUENT AGGRESSIVE OR SEXUAL REACTIONS IN MALE MICE

Previous aggressive behaviour towards a male mouse was found to decrease sexual behaviour of inexperienced male mice towards a female in heat, mainly due to aggressive behaviour occurring in the sexual situation. Sexual behaviour decreased the aggression displayed in a subsequent encounter with a male. Instead, homosexual behaviour occurred in the situation with the male. After either sexual or aggressive behaviour had been practised, it was no longer influenced by practice of the other activity. Inhibition of aggressive behaviour by successive defeats did not affect sexual performance.