Infidelity and Aggression

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Discuss Evolutionary Explanations for Individual Human Aggression: Infidelity and Jealousy [8+16] Jealousy is an emotional state aroused by a perceived threat to a relationship that motivates aggressive behaviour to counter the threat. Infidelity involves a sexual partner being unfaithful either sexually, emotionally or both. This explanation is related to the Evolutionary approach to mating behaviour because Buss argues that gender respond differently because of different adaptations they each experience regarding reproductive concerns. Although both genders experience emotional and sexual jealousy, the cues are weighted differently because of the different reproductive concerns. Men are more distressed about sexual infidelity because of the adaptive problem of uncertain paternity and the risk of investing resources in a child who is not theirs. So if a man suspects sexual infidelity, it evokes aggression related to sexual jealousy. Women are always certain of the maternity of a child; their adaptive problem is finding a mate who is able and willing to invest resources in her and her children for the long-term. Is a woman suspects that the father of her child is emotionally involved with another woman, there is the possibility he will invest his resources in her which could reduce her children’s survival chances and so evokes emotional jealousy which may result in aggression. Research for this evolutionary explanation for aggression comes from Daly and Wilson who reported that men who had just been left, or believe that they are about to be left, commit a high proportion of murders of their partners, possibly due to the jealousy of potentially losing them to another male. This supports Buss’ argument that men are more distressed about sexual infidelity and that it evokes aggression related to sexual jealousy. Furthermore, Buss and Dedden criticize the
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