Adaptive Individual Differences

@article{Buss1999AdaptiveID,
  title={Adaptive Individual Differences},
  author={Davie M. Buss and Heidi Greiling},
  journal={Journal of Personality},
  year={1999},
  volume={67},
  pages={209-243}
}
Individuals differ in innumerable ways, some adaptive, some maladaptive, and some neutral. Personality theories, we argue, can profit from distinguishing among these importantly different types of individual variation. This article outlines a taxonomy of origins of individual differences—environ- mental sources of adaptive differences(e.g., early environmental calibration), heritable sources of adaptive differences (e.g., adaptive self-assessment of heritable qualities), nonadaptive sources of… 
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  • 2009
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Some promising theoretical directions for tackling the explanatory question of personality and individual differences are highlighted, which include life-history theory, costly signaling theory, environmental variability in fitness optima, frequency-dependent selection, mutation load, and flexibly contingent shifts in strategy according to environmental conditions.
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Individual differences are essential to the process of evolution by natural selection, and the number of successful offspring determines gene frequency of particular traits in a population to the extent that it contributes to successful gene propagation.
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