IAV
Incest Avoidance
Class: IV - Unknown or Disputed
EPA Total Score: 1 /100
Shepher, J. (1971). Mate selection among second-generation kibbutz adolescents: Incest avoidance and negative imprinting. Archives of Sexual Behavior, 1, 293-307.
Abstract: Premarital sexual behavior and marriage patterns were investigated in Israeli kibbutzim. All adolescents and adults of the second generation (N =65)in one kibbutz were studied. There were no cases of heterosexual activity between any two native adolescents of the same peer group and no cases of marriage between any two members of the same peer group. The avoidance was completely voluntary. Among 2769 marriages contracted by second generation adults in all kibbutzim, there were no cases of intra—peer group marriage. These findings could represent a case of negative imprinting whereby collective peer group education which includes an incessant exposure to peers from the first days of life and an unimpeded tactile relationship among the peers between ages 0–6 results in sexual avoidance and exogamy.
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Supporting Evidence is evidence that suggests that this trait is an Evolved Psychological Adaptation (EPA) - i.e., that it has been shaped by natural selection to solve a particular adaptive problem.
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Submitted by DJGlass
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Challenging Evidence is evidence that suggests that this trait is not an EPA - e.g., that it is a product of cultural learning or genetic drift, or maybe it does not exist at all. However over each line of evidence for a description.