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A large, comprehensive body of animal research, dating back to the mid19th century, has established the gonadal steroids, particularly testosterone, as having a critical role in the development and maintenance of specific behaviors, particularly sexual and aggressive behavior (Davidson & Levine, 1972; Floody & Pfaff, 1973; Whalen, 1972). Gonadal steroids other than testosterone have been shown to influence behavior; but testosterone is the most potent and plentiful of the androgens (masculinizing hormones), and has been the most thoroughly scrutinized gonadal steroid with respect to effects on behavior.
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Walter A. Brown (1980) studied this question.
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