The target article's evolutionary approach provides an excellent framework for understanding when and why people retaliate or forgive. We argue that recent findings on the basic processes in forgiveness can further refine the authors' proposed model. Specifically, the lack of executive control may restrict the explanatory power of relationship value and exploitation risk.

Previous research has demonstrated that trait self-control is related to a range of positive romantic relationship processes, suggesting that trait self-control should be positively and robustly linked to relationship satisfaction in both partners in a romantic relationship. However, the existing empirical evidence is limited and mixed, especially regarding partner effects. With three datasets of heterosexual couples, the present pre-registered studies examined: the dyadic associations between trait self-control and relationship satisfaction both cross-sectionally and longitudinally, and whether these effects hold when controlling (...) for both partners’ relationship commitment. The results indicated a cross-sectional positive actor effect, some support for a positive cross-sectional partner effect, and only little support for a longitudinal actor effect. After controlling for relationship commitment, all effects of trait self-control on satisfaction diminished except for a longitudinal actor effect among women in Study 2. Potential explanations for the current results, and implications for theory and practice, are discussed. (shrink)