LAUSR

Abstract Existing research demonstrated large deteriorations in parent, child, and family well‐being within 2 months after the onset of the COVID‐19 pandemic. Yet, little is known about the trajectories of families' adjustment in the following months, including what risk factors are associated with changes in families' adjustment. The current study examined (1) change in the parent, child, and family well‐being over time; (2) associations of pandemic‐related stressors, financial and social distancing‐associated stress, with well‐being between and within families; and (3) the role of local COVID‐19 prevalence, prior participation in family‐focused prevention, and parent gender. From April 2020 to January 2021, 393 parents from 235 families reported five times on parent mental health, child behavior problems, family relationships, and pandemic‐related stressors. Findings indicate that, across all domains of well‐being, there was either little change across the 8 months or a small degree of recovery followed by a shift to further deterioration. On average, parents experiencing greater pandemic‐related stressors also reported poorer functioning in all domains; monthly fluctuations in pandemic‐related stressors were also associated with fluctuations in parent mental health and child behavior problems. In some domains, the links between pandemic‐related stressors and parent and child well‐being were stronger among families living in areas with overall higher COVID‐19 prevalence rates. Parents' experiences during the pandemic did not differ systematically across prior intervention participation or parent gender. Taken together, findings suggest a need for supportive interventions to help families navigate extended periods of crisis.