Abstract
"A parametric study of shock intensity and number of CS-UCS pairings, investigating a broad range of both variables, was conducted with an acquired drive procedure utilizing shocks of fixed, short duration during conditioning. The two variables were found to interact in their effect on subsequent performance of a hurdle jump response that was motivated by CS onset and reinforced by CS cessation; the interaction was significant, however, only at the end of the hurdle-jump session. The results were discussed in terms of possible uncontrolled factors contributed by the development of competing response tendencies." (PsycINFO Database Record (c) 2006 APA, all rights reserved)
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