Scientists have long wondered why certain personality traits covary, or appear together. Psychological scientist Aaron W. Lukaszewski (Loyola Marymount University) proposes in a European Journal of Personality paper that some traits are calibrated based on environmental cues, such as an individual’s power to bargain with others. Calibration based on overlapping environmental cues would explain why certain traits tend to covary, even when they have unique psychometric and neuroanatomical roots. More>>
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