The effects of cage environment upon avoidance responding of aged rats.
D000375:Aging; D000704:Analysis of Variance; D000818:Animals; D001362:Avoidance Learning; D001835:Body Weight; D003463:Cues; D004193:Discrimination Learning; D004327:Drinking Behavior; D004597:Electroshock; D004777:Environment; D005247:Feeding Behavior; D005260:Female; D006799:Housing, Animal; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains