Exploring the nexus between sleep, chronotype, and non-cognitive predictors in university students: Implications for academic success.

While the association between sleep-related variables and academic achievement is widely acknowledged, limited attention has been directed towards exploring non-cognitive predictors of academic achievement such as conscientiousness and self-regulation. In this study, we investigated the relationships between various sleep-related factors (circadian preference, chronotype, sleep duration, quality, and irregularity) and non-cognitive predictors (conscientiousness, self-regulation, self-efficacy, and achievement motivation) in 637 university students. Bivariate analyses revealed moderate to strong correlations among several sleep-related measures.

Impact of pandemic lockdown on learning behaviour and sleep quality in German students: Results of an online survey before and during the pandemic.

Background: This study addresses the effects of the coronavirus disease 19 (COVID-19) restriction measures on sleep and bedtime habits of  = 637 German university students.

Methods: The questionnaire was distributed online during two different time periods in 2020 (February 27-March 21) and in 2021 (February 27-March 27). The first data collection phase was immediately before the first strict lockdown to contain the COVID-19 pandemic in Germany, and the second data collection phase was during the second lockdown.