Word: reinisch
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Dates: during 1990-1999
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Although such findings suggest a strong biological influence, they are hardly conclusive. One problem: Are the differences in brain tissue the cause or the result of differences in behavior? "You've always got to keep in mind that experience changes the brain," stresses June Reinisch, director of the Kinsey Institute. And if nature is paramount, why don't identical twins always have the same sexual orientation...
These prenatal fluctuations may also steer boys toward more rambunctious behavior than girls. June Reinisch, director of the Kinsey Institute for Research in Sex, Gender and Reproduction at Indiana University, in a pioneering study of eight pairs of brothers and 17 pairs of sisters ages 6 to 18 uncovered a complex interplay between hormones and aggression. As a group, the young males gave more belligerent answers than did the females on a multiple-choice test in which they had to imagine their response to stressful situations. But siblings who had been exposed in utero to synthetic antimiscarriage hormones that mimic...
...that males perform better on mental-rotation tests in the spring, when their testosterone levels are low, rather than in the fall, when they are higher. Men are also subject to a daily cycle, with testosterone levels lowest around 8 p.m. and peaking around 4 a.m. Thus, says June Reinisch of the Kinsey Institute: "When people say women can't be trusted because they cycle every month, my response is that men cycle every day, so they should only be allowed to negotiate peace treaties in the evening...
...from strengthening stereotypes about who women and men truly are or how they should behave, research into innate sexual differences only underscores humanity's awesome adaptability. "Gender is really a complex business," says Reinisch. "There's no question that hormones have an effect. But what does that have to do with the fact that I like to wear pink ribbons and you like to wear baseball gloves? Probably something, but we don't know what...
...with each other during their teen years, even though approximately 9 out of 10 eventually settle into relationships with girls. But both men and women may switch gears later on or be bisexual throughout life. "There are some people in whom sexual orientation does not maintain itself," says June Reinisch, director of the Kinsey Institute for Research in Sex, Gender and Reproduction at Indiana University. "It's not a matter of what they prefer, it's whom they fall in love with." She cites the example of a woman who fell in love with and was married...