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Death, Hope, and Sex: Life-History Theory and the Development of Reproductive Strategies [and Comments and Reply]
Many social scientists reject evolutionary views of human behavior because of their supposed genetic determinism. To establish that not all evolutionary models are inherently deterministic the author…
Energetics and reproductive effort
- P. Ellison
- BiologyAmerican journal of human biology : the official…
- 1 May 2003
New evidence is found that variation in testosterone production in response to both age and longer‐lasting energetic conditions contributes to the modulation of somatic and behavioral aspects of male reproductive effort, aspects that are more energetically costly for a male.
Large breasts and narrow waists indicate high reproductive potential in women
- G. Jasienska, A. Ziomkiewicz, P. Ellison, S. Lipson, I. Thune
- MedicineProceedings of the Royal Society of London…
- 22 June 2004
It is documented that women with higher breast–to–underbreast ratio (large breasts) and women with relatively low WHR (narrow waists) have higher fecundity as assessed by precise measurements of daily levels of 17–β–oestradiol (E2) and progesterone.
Marriage and fatherhood are associated with lower testosterone in males
Metabolic hypothesis for human altriciality
- Holly M Dunsworth, A. Warrener, T. Deacon, P. Ellison, H. Pontzer
- Biology, PsychologyProceedings of the National Academy of Sciences
- 29 August 2012
Evidence is presented that challenges the importance of pelvic morphology and mechanics in the evolution of human gestation and altriciality and suggests that limits to maternal metabolism are the primary constraints on human gestation length and fetal growth.
Human Ovarian Function and Reproductive Ecology: New Hypotheses
- P. Ellison
- 1 December 1990
8 hypotheses based on recent research are proposed relating the response of human ovarian function to ecological factors to gain a systhesis of ovarian physiology based on evolutionary theory, which provides an indication of chronic environmental qualities especially energy supply.
The development of sex differences in digital formula from infancy in the Fels Longitudinal Study
- M. McIntyre, P. Ellison, D. Lieberman, E. Demerath, B. Towne
- Psychology, MedicineProceedings of the Royal Society B: Biological…
- 22 July 2005
This is the first study using long-term serial data to evaluate the validity of finger length ratios as markers and finds that sex differences in the fingers of children are highly correlated with adult finger length ratio.
Testosterone and paternal care in East African foragers and pastoralists
- M. Muller, F. Marlowe, Revocatus Bugumba, P. Ellison
- BiologyProceedings of the Royal Society B: Biological…
- 22 January 2009
Comparisons between two neighbouring Tanzanian groups that exhibit divergent styles of paternal involvement confirmed the hypothesis that paternal care is associated with decreased testosterone production in men, and added further support to the ‘challenge hypothesis’.
The relationship of male testosterone to components of mental rotation
Human male pair bonding and testosterone
- P. Gray, J. Chapman, T. Burnham, M. McIntyre, S. Lipson, P. Ellison
- PsychologyHuman nature
- 1 June 2004
Testing the prediction that undergraduate men involved in committed, romantic relationships (paired) will have lower T levels than men not involved in such relationships (unpaired), and analysis of the variation among unpaired subjects, suggests variation in male testosterone levels may reflect differential behavioral allocation to mating effort.