The association between higher testosterone levels and better learning of the angry face keyboard sequence was strongest when angry faces flashed on the computer screen subliminally -- too fast for conscious identification.
"Better learning of a task associated with anger faces indicates that the anger faces were rewarding, as in a rat that learns to press a lever in order to receive a tasty treat. In that sense, anger faces seemed to be rewarding for high-testosterone people but aversive for low-testosterone people," Wirth said in a prepared statement.
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