Now showing items 1-4 of 4
Some effects of rearing conditions upon later learning abilities and activity in the albino rat
The present study was designed to investigate the effects of crowding and preexposure and the time of treatment upon later learning and activity in the male albino rat. The subjects were reared from birth to adulthood in ...
The effect of magnitude of reward and intertrial interval on the acquisition of a discrete trial lever press response
This study examined the effect of regular patterns of reward and ITI on acquisition. 4 groups of 20 rat Ss were given 13 trials a day for 6 days. There were 2 schedules of reward (CRF and VRF), 2 lengths of ITI (15 and 60 ...
The effect of early shock with or without a warning signal on adult behavior and susceptibility to stress-induced ulcers in the rat
This study was undertaken to determine the effects of preweaning signalled and unsignalled shock on adult behavior and susceptibility to stress-induced gastric ulcers in albino rats. Fifty-four animals were separated into ...
The parameters involved in the acquisition and extinction processes of a declined runway upon the behavior of the rat
This study was designed to investigate the parameters involved in a declined runway situation. The subjects were eighteen female and twelve male Holtzman rats. The procedure involved varying factorially the decline of a ...