http://www.livescience.com/culture/080902-face-parents.html "Men like women who resemble dear old mom, and women like men who look like dear old dad, a computer analysis now shows. Scientists in Hungary investigated 52 university students and their parents. They also looked at the significant others of the volunteers and the parents of these significant others, for 312 faces total. The computer analysis of the volunteers' faces revealed that women often resembled their male partner's mother, a finding echoing psychoanalyst Sigmund Freud's legendary "Oedipus complex." This proved especially true when it came to aspects of the lower face, such as lips and jaws. There were also significant resemblances between men and their female partner's father, echoing the "Electra complex." This was especially true when it came to proportions of the center of the face, such as how far apart the eyes were or the size of the nose."