Relationship between human reproductive behaviour and Sexual Selection

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1. Which study found across cultures there a preference for a female 0.7 waist to hip ratio going an hourglass figure?

  • Waynforth
  • Singh
  • Buss (1989)
  • Cunningham
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2. What did Buss (2007) find?

  • The less time a man spend with a woman before sex the more women he could impregnate
  • Short term mating preferences in women allowed the women to leave poor quality relationships and have genetically diverse offspring increasing likelihood of their survival
  • Across cultures there a preference for a female 0.7 waist to hip ratio going an hourglass figure
  • Due to higher level of parental investment in women, they had a preference for a man who would be a good parent, invest resources in her and offspring, be able to physically protect them and be compatible to her

3. Issue of inter sexual selection

  • Both sexes had a preference for symmetrical faces as they represented healthier genes
  • Reductionistic to reduce a complex subject of mate choice down to natural selection
  • Deterministic to suggest that natural selection based on based on whether they have good genes completely determines the mate we choose, not all relationships are carried out for reproduction e.g. birth control, homosexual relationships
  • Cause and effect relationship cannot be established

4. What did Buss (2003) suggest?

  • The less time a man spend with a woman before sex the more women he could impregnate
  • Women are attracted to masculine features such as a square jaw and rigid eyebrows in men as they're associated with high levels of testosterone, suggesting they have healthy genes as testosterone surpasses the immune system
  • Due to higher level of parental investment in women, they had a preference for a man who would be a good parent, invest resources in her and offspring, be able to physically protect them and be compatible to her
  • Short term mating preferences in women allowed the women to leave poor quality relationships and have genetically diverse offspring increasing likelihood of their survival

5. Describe intersexual selection

  • Mate choice; the preference of one sex for the opposite sex that possess favourable characteristics and therefore good genes that will be passed onto offspring
  • Mate competition; members of the same sex compete for access to members of the opposite sex and the winners go on to mate and pass on their genes that helped them win
  • Mate choice; members of the same sex compete for access to members of the opposite sex and the winners go on to mate and pass on their genes that helped them win
  • Mate competition; the preference of one sex for the opposite sex that possess favourable characteristics and therefore good genes that will be passed onto offspring

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