Sexual imprinting in human mate choice.

Area of Science:

• Evolutionary psychology
• Behavioral genetics
• Human mating behavior

Background:

• Homogamy, or mate choice based on similarity, is observed in humans and animals.
• Phenotypic matching has been proposed as an innate mechanism for detecting similar mates.
• Previous theories face empirical and theoretical challenges, necessitating alternative explanations.

Purpose of the Study:

• To investigate the role of sexual imprinting in human homogamy.
• To test the hypothesis that children use a mental model of their opposite-sex parent as a mating template.
• To differentiate the effects of phenotypic matching from sexual imprinting.

Main Methods:

• Examined adopted daughters and their rearing families to isolate genetic from environmental influences.
• Utilized judges to assess facial trait resemblance between daughters' husbands and their adoptive fathers.
• Assessed the quality of the father-daughter relationship during childhood.

Main Results:

• Significant facial trait resemblance was found between adopted daughters' husbands and their adoptive fathers.
• The tendency to choose a father-similar mate was stronger when the father-daughter relationship was more supportive.
• This suggests sexual imprinting, rather than solely phenotypic matching, influences mate selection.

Conclusions:

• Sexual imprinting on the opposite-sex parent plays a significant role in human homogamy.
• The quality of the early parent-child relationship can modulate the imprinting effect on mate choice.
• Findings challenge innate phenotypic matching as the sole driver of similarity in mate selection.