scholarly journals Sex and Population Differences in Intelligence Are Partly Caused by Sexual Selection: Hn Evolutionary Hypothesis

2014 ◽  
Vol 6 (4) ◽  
pp. 2.1-2.7
Author(s):  
Davide Piffer
Keyword(s):  
Sexual Selection ◽  
Population Differences ◽  
Evolutionary Hypothesis

scholarly journals Population differences in the strength of sexual selection match relative weapon size in the Japanese rhinoceros beetle, Trypoxylus dichotomus (Coleoptera: Scarabaeidae)

Evolution ◽  
2020 ◽  
Author(s):  
Jillian F. del Sol ◽  
Yoshihito Hongo ◽  
Romain P. Boisseau ◽  
Gabriella H. Berman ◽  
Cerisse E. Allen ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Population Differences ◽  
Rhinoceros Beetle ◽  
Trypoxylus Dichotomus

scholarly journals Eating disorders and intrasexual competition: Testing an evolutionary hypothesis among young women

2011 ◽  
Vol 26 (S2) ◽  
pp. 709-709
Author(s):  
S. Mehta ◽  
R. Abed ◽  
A.J. Figueredo ◽  
S. Aldridge ◽  
H. Balson ◽  
...  
Keyword(s):  
Eating Disorders ◽  
Sexual Selection ◽  
Structural Equation ◽  
Clinical Sample ◽  
Eating Behaviour ◽  
Intrasexual Competition ◽  
Human Mind ◽  
List Type ◽  
Sexual Competition ◽  
Evolutionary Hypothesis

IntroductionCompeting theories on the aetiology of eating disorders originate from a diverse set of disciplines. One such discipline is Evolutionary Psychology which assumes that the human mind has been shaped by natural and sexual selection. Most evolutionary theories on eating disorders limit themselves to the causation of anorexia nervosa only. The Sexual Competition Hypothesis (SCH), based on the Darwinian theory of sexual selection, provides an explanatory framework for the whole spectrum of eating disorders. It contends that intense female intrasexual competition (ISC) is the ultimate cause of eating disorders. The SCH explains the phenomenon of the pursuit of thinness as an adaptation to ISC in the modern environment. It argues that eating disorders are pathological phenomena that arise from the mismatch between the modern environment and the inherited female adaptations for ISC.ObjectivesTo test predictions from a novel evolutionary hypothesis for eating disorders.Aimsi)To examine the relationship between disordered eating behaviour (DEB) and ISC in a sample of female undergraduates.ii)To establish whether there is any relationship between DEB and Life History (LH) strategy.MethodsA group of 206 female undergraduates were recruited. A structural equation model was constructed to analyse the data.ResultsISC for mates was significantly associated with DEB, as predicted by the SCH. DEB was found to be predicted by fast LH strategy, which was only partially mediated by the SCH.ConclusionsThe results of this study are supportive of the SCH and justify research on a clinical sample.

The katydid that was: the tananá, stridulation, Henry Walter Bates and Charles Darwin

2014 ◽  
Vol 41 (1) ◽  
pp. 131-140 ◽  
Author(s):  
Claudio J. Bidau
Keyword(s):  
Sexual Selection ◽  
Charles Darwin ◽  
Bush Cricket

The Amazonian bush-cricket or katydid, Thliboscelus hypericifolius (Orthoptera: Tettigoniidae: Pseudophyllinae), called tananá by the natives was reported to have a song so beautiful that they were kept in cages for the pleasure of listening to the melodious sound. The interchange of letters between Henry Walter Bates and Charles Darwin regarding the tananá and the issue of stridulation in Orthoptera indicates how this mysterious insect, which seems to be very rare, contributed to the theory of sexual selection developed by Darwin.

Sexual selection, evolution of play and entertainment

2005 ◽  
Vol 3 (2) ◽  
pp. 141-157 ◽  
Author(s):  
Peter Ohler ◽  
Gerhild Nieding
Keyword(s):  
Sexual Selection
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