Objective/Background: Poorer executive function (EF) has been implicated in the etiology of negative parenting (e.g., harsh, reactive, intrusive). EF may be affected by good or poor quality sleep, and thus sleep may be involved in negative parenting. In the current exploratory study, we investigated the additive and interactive effects of maternal EF and sleep indicators in the statistical prediction of negative parenting. Patients/Methods: A sample of 241 mothers of 2.5 yr-olds (51% girls) completed questionnaires, wore wrist actigraphs for one week, and completed several EF tasks during a laboratory visit. Results/Conclusions: We found that sleep activity (e.g., nighttime waking and movements) interacted with EF in predicting negative parenting practices, such that poorer EF was linked with more negative parenting only in the context of higher levels of night waking. Sleep duration also interacted with EF, such that EF and parenting were no longer associated when sleep durations were short. The findings have implications for incorporating sleep into our understanding of maternal cognitive self-regulation and harsh parenting during early childhood development.
There are well-known associations between stress, poor sleep, and cognitive deficits, but little is known about their interactive effects, which the present study explored in a sample of mothers of toddlers. Since certain types of cognitive decline start during the 20s and continue into later ages, we also explored whether mothers’ age interacted with stress and sleep in the prediction of cognitive functioning. We hypothesized that poorer sleep [measured using one week of 24-hour wrist actigraphy data] and having more chronic stressors [e.g., life events, household chaos, work/family role conflict] would be linked with poorer cognitive performance [both executive function and standardized cognitive ability tasks], and that the interactive combination of poorer sleep and more stressors would account for the effect. We also explored whether this process operated differently for younger versus older women. In a socioeconomically and geographically diverse community sample of 227 women with toddler-age children [age, M = 32.73 yrs, SD = 5.15 yrs], poorer cognitive performance was predicted by greater activity during the sleep period, shorter sleep duration, and lower night-to-night consistency in sleep; it was not associated with higher levels of stress. The interactive effects hypothesis was supported for sleep activity [fragmented sleep] and sleep timing [when mothers went to bed]. The combination of more exposure to stressors and frequent night waking was particularly deleterious for older women’s performance. For younger women, going to bed late was associated with poorer performance if they were experiencing high levels of stress; for those experiencing low levels of stress, going to bed late was associated with better performance.
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