Abstract
Thirty-six male, albino rats were given discrimination training in a T-maze. The design consisted of a 3 × 2 factorial combining three levels of drive (95%, 85%, and 75% mean ad lib body weight loss) and two types of discrimination tasks (position and brightness). It was found that discrimination learning was facilitated by increased drive and Ss that were reduced to 85% and 75% their mean ad lib body weights learned the position problem in less days and with fewer errors to criterion than animals trained on the brightness task. However, as a function of an initially strong tendency for rats trained under low drive to demonstrate spontaneous alternation behavior task differences, as measured by errors to criterion, were not found.
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