Like it or not, parents shape their children's sexual preferences
In a forthcoming report in Personality and Social Psychology Bulletin by University of Illinois at Urbana-Champaign psychologist Chris Fraley and New Mexico State University’s Michael Marks—a study that would make Freud smile in his grave and give a long-fingered salute to his many critics—these investigators show that sexual attraction to one’s own biological parents isn’t as deviant or abnormal a thing as you might assume. In fact, evidence of these hidden desires, say Marks and Fraley, raise important questions for traditional psychological accounts of incest avoidance.
Great article at Scientific American by Jesse Bering. Read all of Jesse's post here.
From PubMed page for Fraley and Marks study:Westermarck, Freud, and the Incest Taboo: Does Familial Resemblance Activate Sexual Attraction?
Evolutionary psychological theories assume that sexual aversions toward kin are triggered by a nonconscious mechanism that estimates the genetic relatedness between self and other. This article presents an alternative perspective that assumes that incest avoidance arises from consciously acknowledged taboos and that when awareness of the relationship between self and other is bypassed, people find individuals who resemble their kin more sexually appealing. Three experiments demonstrate that people find others more sexually attractive if they have just been subliminally exposed to an image of their opposite-sex parent (Experiment 1) or if the face being rated is a composite image based on the self (Experiment 2). This finding is reversed when people are aware of the implied genetic relationship (Experiment 3). These findings have implications for a century-old debate between E. Westermarck and S. Freud, as well as contemporary research on evolution, mate choice, and sexual imprinting.