“…Secondly, our model treated the dyad as a closed system, such that there were no external inputs or variables other than the mean and variation of the dynamic parameters that related to the outcomes of interest. However, research has shown that there are a variety of socio-demographic factors that could contribute to relationship quality and relationship dissolution, which may not affect the average value or variation of the dynamic parameters (Conger et al, 1990 ; Gottman and Levenson, 1992 ; Lewin, 2005 ; Poortman, 2005 ; Røsand et al, 2014 ; Hensel and O'Sulliban, 2022 ). Finally, and more generally, there was a 1-to-2-year gap between the assessment of daily affect, and the follow-up with assessment of relationship outcomes.…”