Study finds shape not size matters in male mice

Male mice exposed to other male competitors have thicker penis bones according to a new study by researchers at The University of Western Australia, published today in Proceedings of the Royal Society B: Biological Sciences.

Competition may be reason for bigger brain

For the past 2 million years, the size of the human brain has tripled, growing much faster than other mammals. Examining the reasons for human brain expansion, University of Missouri researchers studied three common hypotheses ...

Women also competed for status superiority in mid-Republican Rome

Purple clothing, gold trimmings, earrings and two- or four-wheeled carriages. Among the elite, competition for status superiority was just as vital to women as it was to men in Rome around 2000 years ago. This has been demonstrated ...

More competitors, less competition

(PhysOrg.com) -- Americans love competition, but the more challengers involved, the less likely we are to compete, says a University of Michigan professor.

Contact with 'rivals' changes male behavior

Males consistently change their mating behaviour depending on whether they have spent time with other males before mating, according to new findings by scientists at the University of East Anglia (UEA).

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