Social status and the secondary sex ratio: New evidence on a lingering controversy

@article{Ellis2002SocialSA,
  title={Social status and the secondary sex ratio: New evidence on a lingering controversy},
  author={Lee Ellis and Steven Bonin},
  journal={Social Biology},
  year={2002},
  volume={49},
  pages={35 - 43}
}
Abstract Because women are more likely than men to use social status as a criterion in mate selection, evolutionary theory has led to the hypothesis that higher proportions of males will be born to parents of high social status than to parents of low status. To date, the research that has tested this deduction has not provided consistent support. This could be partly due to the small sample size in several of the studies. The present study tested the hypothesis using 6 different social status… 

Parental Status and Differential Investment in Sons and Daughters: Trivers-Willard Revisited

According to the Trivers-Willard (T-W) hypothesis there is an interaction between individual status and investment in offspring such that high-status individuals invest more in boys, and low-status

Parental status and gender preferences for children: is differential fertility stopping consistent with the trivers-willard hypothesis?

The results show no support for the Trivers-Willard hypothesis on a wide range of different status indicators and future research on the stated hypothesis should focus on physiological rather than behavioural mechanisms.

Boy or girl: gender preferences from a Darwinian point of view.

  • L. Cronk
  • Psychology
    Reproductive biomedicine online
  • 2007

Sociosexually unrestricted parents have more sons: A further application of the generalized Trivers–Willard hypothesis (gTWH)

It is predicted that parents with unrestricted sociosexual orientation have a higher-than-expected offspring sex ratio (more sons) and one standard deviation increase in unrestrictedness of soci homosexual orientation increases the odds of having a son by 12–19% in the representative American samples.

Violent men have more sons: further evidence for the generalized Trivers-Willard hypothesis (gTWH).

  • S. Kanazawa
  • Psychology
    Journal of theoretical biology
  • 2006

Testing the Trivers-Willard Hypothesis on Polish kings and dukes

Abstract The Trivers-Willard Hypothesis (TWH), frequently investigated by evolutionary psychologists, states that human beings may have evolved to produce a greater number of sons when having a high

The Effect of a Child's Sex on Support for Traditional Gender Roles

We examine whether sex of child affects parents' beliefs about traditional gender roles. Using an improved methodological approach that explicitly analyzes the natural experiment via differences in

Beautiful British Parents Have More Daughters

The analysis of the prospectively longitudinal National Child Development Study in the United Kingdom replicates earlier findings with an American sample and confirms the generalized Trivers-Willard hypothesis that physically attractive parents have more daughters.

Socioeconomic status and sex ratios at birth in Sweden: No evidence for a Trivers–Willard effect for a wide range of status indicators

This study examines if there exists a positive association between socioeconomic status and the proportion of male births in humans, as proposed by Trivers and Willard in 1973, using individual‐level

References

SHOWING 1-10 OF 60 REFERENCES

Variation in offspring sex ratio in women of differing social status

Reconsidering the null hypothesis: Is maternal rank associated with birth sex ratios in primate groups?

  • Gillian R BrownJ. Silk
  • Psychology, Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2002
Meta-analysis techniques are used to evaluate claims that nonhuman primate females facultatively adjust the sex ratio of their progeny in relation to their own dominance rank in a uniform way and indicate that presently the null hypothesis that maternal dominance rank is unrelated to birth sex ratios cannot be rejected.

Waiting for Trivers and Willard: do the rich really favor sons?

Weak support for the T-W effect is found among families where fathers were best educated, where a greater proportion of first-born boys are breastfed longer than girls, while the opposite trend is observed among families with fathers with lowest levels of education.

Sociobiology, Status, and Parental Investment in Sons and Daughters: Testing the Trivers‐Willard Hypothesis1

While some dismiss sociobiological theories as untestable, post hoc explanations, this article argues that sociologists should instead increase their efforts to identify and engage those theories

Sex-biased investment in nonhuman primates: can Trivers & Willard's theory be tested?

Abstract The study of how parents divide investment between sons and daughters has become one of the most popular areas of discussion in evolutionary biology. Trivers & Willard (1973, Science , 179 ,

Socio-economic factors and the sex ratio at birth.

Large scale data with refined measures of socioeconomic status and race were used and it was concluded that no clear causal relationships can be demonstrated since all the "effects" are statistical associations.

Constraints in the Evolution of Sex Ratio Adjustment

This work uses meta-analysis to test the role of two constraints in the evolution of sex ratios in birds and wasps and shows that mechanisms of sex determination do not necessarily constrain the Evolution of sex ratio adjustment, and parental ability to predict their offsprings' environment influences the evolutionof sex ratio patterns across taxa.

The Effect of Polygyny on Sex Ratio at Birth

Ethnographic data from Kenyan communities show that the sex ratio at birth is influenced by the rate and timing of coitus which is itself affected by the form of marriage. This situation leads to
...