Comparison of the behavior of stock and inbred albino rats.

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Abstract
Examined the behavior of stock and inbred albino rats. Two methods were employed: the maze, and the brightness discrimination methods. The circular maze, devised by Watson, was used on 9 stock and 7 inbred rats. In the long maze, the male stock rats travelled greater distances, took longer times, and made more errors, but acquired a perfect habit sooner than the inbred males. The female inbred rats showed similar results. The stock rats showed a smaller number of trials required to form a perfect habit than the inbred. The Yerkes discrimination box was used in the discrimination method. Four stock and 4 inbred rats, 2 males and 2 females each, were involved. All the rats showed a greater preference for the dark than for the light box. The inbred rats showed this preference more than did the stock rats. The inbred rats continued to be able to discriminate under more difficult conditions than did the stock rats. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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