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Tanno, Takayuki; Silberberg, Alan; Sakagami, Takayuki – Journal of the Experimental Analysis of Behavior, 2009
Food-deprived rats in Experiment 1 responded to one of two tandem schedules that were, with equal probability, associated with a sample lever. The tandem schedules' initial links were different random-interval schedules. Their values were adjusted to approximate equality in time to completing each tandem schedule's response requirements. The…
Descriptors: Intervals, Probability, Animals, Experiments
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Sargisson, Rebecca J.; McLean, Ian G.; Brown, Glenn S.; White, K. Geoffrey – Journal of the Experimental Analysis of Behavior, 2007
The weights of 5 pigeons with free access to food, monitored over 3 calendar years in the laboratory, were found to fluctuate with season. All pigeons were at their heaviest in the winter and were lightest in the summer. Five different pigeons performed a standard delayed matching-to-sample task for 44 weeks from January to November. Their weights…
Descriptors: Body Weight, Animals, Animal Behavior, Food