Twin studies these days are invoked to feed the popular notion that genes determine behavior, since they suggest that genes play a role in such things as schizophrenia, alcoholism, performance on intelligence tests--even proneness to divorce (a 1992 study of 1,500 sets of twins found that if one twin had been divorced, the likelihood that the co-twin had also been divorced was 45 percent in identical twins, but only 30 percent in fraternal twins).
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are invoked to feed determine had been divorced suggest play had also been divorced
to feed the popular notion that genes determine behavior
the popular notion that genes determine behavior
behavior
that genes play a role in such things as schizophrenia, alcoholism, performance on intelligence tests--even proneness
a role in such things as schizophrenia, alcoholism, performance on intelligence tests--even proneness to divorce (a 1992 study of 1,500 sets of twins found that if one twin had been divorced, the likelihood that the co-twin had also been divorced was 45 percent in identical twins, but only 30 percent in fraternal twins)