In the last decade of the twentieth century, researchers Erick Janssen and John Bancroft at the Kinsey Institute for Research in Sex, Gender, and Reproduction developed a model of human sexual response that provides an organizing principle for understanding the true story of sex. According to their “dual control model,” the sexual response mechanism in our brains consists of a pair of universal components—a sexual accelerator and sexual brakes—and those components respond to broad categories of sexual stimuli—including genital sensations, visual stimulation, and emotional context. And the
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