A new study shows poor sleep may cause increased anger.
Previous research has suggested that poor sleep quality and quantity are associated with negative outcomes, such as difficulty with problem-solving, reducedThe current series of studies by Audigier et al. explores one mechanism that may drive the negative effects of poor sleep quality on relationships: Worse sleep might lead to increased anger, which might then negatively impact our intimate relationships.
Similarly, through the longitudinal study, the researchers found that “people who experienced worsening changes in their sleep quality across a given month…experienced increasing anger, and, thus, reductions in their perceived relationship quality.” They also found that the relationship between relationship quality and sleep was reciprocal.
Just as worse sleep at time 1 predicted worse future relationship quality, better relationship quality at time 1 also predicted future better sleep, although this latter relationship did not seem to be driven by changes in anger. When examining couples, although one partner’s sleep quality was weakly associated with the other partner’s relationship satisfaction, one’s sleep quality was more strongly related to their relationship satisfaction than their partner’s sleep quality.
Finally, the authors experimentally manipulated affect among poor sleepers and better sleepers. They found that among those who had slept poorly and were led to feel angry, perceptions of relationship quality declined, even though the anger induction was not related to relationship issues.
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