Rats’ performance on repeated tests in the open field as a function of age
Tóm tắt
Sprague-Dawley rats, 50, 90, and 150 days old, received 10 tests in an open field. Younger rats were both significantly more active and showed different trends in activity over tests than older rats. Also, as a function of tests, younger rats became less thigmotaxic and showed less defecation, while the oldest rats showed a relatively constant degree of thigmotaxis and a relatively constant level of defecation over tests. Younger rats spent significantly more time grooming than older rats, and all Ss increased grooming time over tests. It was suggested that level of curiosity in young and old rats might be equal but that younger rats are less fearful than older rats.
Tài liệu tham khảo
BROADHURST, P. L. Determinants of emotionality in the rat: II. Antecedent factors. British Journal of Psychology, 1958, 49, 12–20.
DOTY, B. A., & DOTY, L. A. Effects of handling at various ages on later open-field behaviour. Canadian Journal of Psychology, 1967, 21, 463–470.
FURCHTGOTT, E., WECHKIN, S., & DEES, J. W. Open-field exploration as a function of age. Journal of Comparative & Physiological Psychology, 1961, 54, 386–388.
HAHN, M. E., MORRISON, B. J., SIMMEL, E. C., & HARRIS, C. J. Atypical effects of electroshock on emotionality in rats. Psychonomic Science, 1970, 21, 159–160.
IVINSKIS, A. A note on the open-field test of emotionality. Australian Journal of Psychology, 1966, 18, 276–280.
MONTGOMERY, K. C. The relation between fear induced by novel stimulation and exploratory behavior. Journal of Comparative & Physiological Psychology, 1955, 48, 254–260.
PARE, W. P. Relationship of various behaviors in the open-field test of emotionality. Psychological Reports, 1964, 14, 19–22.
VALLE, F. P. Effects of strain, sex and illumination on open-field behavior of rats. American Journal of Psychology, 1970, 83, 103–111.
WERBOFF, J., & HAVLENA, J. Effects of aging on open-field behavior. Psychological Reports, 1962, 10, 395–398.