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Physical beauty involves more than good looks

Research suggests that non-physical traits, such as personality and behavior, have a substantial impact on how people perceive physical attractiveness. Studies involving familiar and stranger participants found that non-physical traits known only to familiars had a large effect on perception of physical attractiveness.

SourceUniversity of Wisconsin-Madison·JournalEvolution and Human Behavior·DateApr 15, 2004

Safe is sexy

A study published in Animal Behaviour found that female fiddler crabs are attracted to burrows, not just male courtship signals. The researchers suggest that some male signals may be designed to keep females safe as they search for a mate.

SourceSmithsonian Tropical Research Institute·JournalAnimal Behaviour·DateJul 28, 2003