Degree Name

Master of Arts (MA)

Semester of Degree Completion

1975

Thesis Director

William P. McGown

Abstract

Twelve male albino rats were divided into three groups that were exposed to a DRL-18 second schedule of reinforcement. Each group was maintained at 70%, 80%, and 90% ad lib weight respectively during 28 days of acqusition training. The 70% ad lib weight group demonstrated continued superior performance over the other two groups after the 10th day. The 80% and 90% groups evidenced little difference between each other until the 20th day when the 80% group showed slightly better performance. Performance was based on the mean time-response efficiency ratios [(reinforced responses/ total responses) + (reinforced responses/ total possible reinforced responses)/ 2]. The results were discussed in terms of activity and development of collateral behavior.

Included in

Psychology Commons

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