“…Based on the accumulated findings reported here, we hypothesize (H2) that bedtime procrastination also mediates the effect of IA on poor sleep quality. Stainton, Lay, and Flett (2000) argued that rumination is an important factor affecting procrastination behavior, which has been supported by many investigations (e.g., Constantin, English, & Mazmanian, 2018;Gort, Marcusson-Clavertz, & Kuehner, 2020;Rebetez, Rochat, Barsics, & Van der, 2018). Studies have also found that rumination can significantly predict procrastination; as when levels of rumination increase so do procrastinating behaviors (Flett, Haghbin, & Pychyl, 2016).…”