Abstract
90 thirsty male albino rats were run in a bar pressing apparatus with a factorial design: 5 levels of force required to depress the bar and 3 levels of length of behavior chain. Measures were several kinds of speeds (starting speed, pressing speed, etc.), instrumental response amplitude, and number of responses to a criterion of extinction. Results are presented in detail for each of these measures. (21 ref.) From Psyc Abstracts 36:01:1EH45W. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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