摘要:As they strive to become more independent, adolescents and their families may be particularly affected by the COVID-19 pandemic and the associated measures which enforced to stay at home as much as possible. In this ecological momentary assessment study, we investigated if the COVID-19 pandemic affected the positive and negative affect of Dutch parents and adolescents and parenting behaviors (warmth and criticism) during the first lockdown (March 2020 onwards) in The Netherlands. Additionally, we examined possible explanations for the hypothesized changes in affect and parenting and explored daily difficulties and helpful activities during the COVID-19 pandemic linked to their well-being. Method: To do so, we compared daily reports that were gathered during two periods of 14 consecutive days, once before the COVID-19 pandemic (2018-2019) and once during the first lockdown (April 2020). Results: We found that only parents’ negative affect increased as compared to the period before the pandemic (and not adolescents’ negative affect, nor positive affect and parenting behaviors. Intolerance of uncertainty (IU) was linked to adolescents’ and parents’ negative affect and adolescents’ positive affect. However, IU, nor any pandemic-related characteristics were linked to the increase of parents’ negative affect during COVID-19. Conclusions: The presence of substantial heterogeneity in the data suggests that individuals and families differed to what extent the COVID-19 pandemic influenced their affect and (perspective of) parenting behavior. Implications for policymakers and mental health professionals will be discussed during the presentation.