|
Hendricks, J. C., & Morrison, A. R. (1981). Normal and abnormal sleep in mammals. J Am Vet Med Assoc, 178(2), 121–126.
|
Henning, J. M., & Zentall, T. R. (1981). Imitation, social facilitation, and the effects of ACTH 4-10 on rats' bar-pressing behavior. Am J Psychol, 94(1), 125–134.
Abstract: The effects of ACTH 4-10 on rats' imitation learning was examined during the acquisition and extinction of a bar-press response for water reinforcement. Rats were exposed to either a bar-pressing conspecific (OB), an experimentally naive conspecific (ON), or an empty box (OE) during bar-press acquisition. In a factorial design, each rat was then exposed to one of the same three conditions during extinction. An 80 mcg dose of ACTH 4-10 was administered to half of the rats in each group prior to observation. Performance differences during acquisition were generally small, but significant performance differences during extinction were found. Social facilitation was indicated by the finding that rats extinguished in the presence of a conspecific exhibited significantly greater resistance to extinction than rats extinguished in the presence of an empty box. An imitation effect was also found. Rats that observed a bar-pressing conspecific during both acquisition and extinction (group OB-OB) showed significantly greater resistance top extinction than did groups OB-ON, CB-OE, or OE-OE. There were no significant effects of the hormone, however, relative to saline controls.
|
|
Beaver, B. V. (1981). Problems & values associated with dominance. Vet Med Small Anim Clin, 76(8), 1129–1131.
|
|
Beaver Bv,. (1981). Maternal behavior in mares. Vet Med Small Anim Clin, 76, 315–317.
|
|
Berger J,. (1981). The role of risks in mammalian combat: Zebra and onager fights. Z Tierpsychol 56, , 297–304.
|
|
CLAYTON HM et al,. (1981). Some studies of comparative aspects of sexual behaviour in ponies and donkeys. App Anim Ethol, 7, 169–174.
|
|
COUGOUILLE-GAUFFRETEAU B et al,. (1981). Research on the consequences of the injection of male hormones... Comptes red Seanc Acad Sci, 292, 1073–1076.
|
|
Groves Cp, W. D. (1981). Studies on the taxonomy and phylogeny of the genus Equus. Mammalia, 45, 321–354.
|
|
Grubb P,. (1981). Equus burchelli. Mammalia, 157, 1–9.
|
|
Hoyt Df, T. C. (1981). Gait and the energetics of locomotion in horses. Nature, 292, 239–240.
|
