Coolidge Effect

The Coolidge effect is a research observation of the preference for organisms to prefer novel sexual mates over organisms they have mated with previously. The original research in the 1950s using rodents proposed that only males have this preference but later research showed that female organisms have this desire (or proclivity) also. A possible evolutionary explanation for this observation is that animals have the desire to spread their genetic material as much as possible to ensure its continuation in the species.

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History of Psychology
History of Psychology