Which personality trait have evolutionary psychologists speculated may be adaptive in some situations because it correlates with jealousy protecting one's mate?

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Evolutionary psychologists have speculated that neuroticism may be adaptive in some situations because it correlates with jealousy, which can protect one's mate. High levels of neuroticism are associated with anxiety, vulnerability to stress, and a tendency to experience negative emotions, including jealousy.

Which Personality Trait Have Evolutionary Psychologists Speculated May Be Adaptive