Aggressiveness is reduced in adult rodents by castration, whereas injections of testosterone reinstate adult male rodent aggression. These effects are an example of a(n) ________ hormone effect.

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Quizplus · Accepted Answer

Activational hormone effects refer to the short-term effects of circulating hormones on behavior, such as testosterone's role in stimulating aggression in adult male rodents. Castration removes this activational effect and reduces aggression, whereas testosterone injections reinstate it. Defeminization and organizational hormone effects refer to long-term organizational effects of hormones during development, while subcortical and biphasic effects are more general terms not applicable to this specific example.

Aggressiveness Is Reduced in Adult Rodents by Castration, Whereas Injections