Longitudinal effects of U.S. students' reentry shock on psychological health after returning home during the COVID-19 global pandemic.

Guided by the stress process model (Pearlin, Mullan, Semple, & Skaff, 1990; Pearlin, 1999), the purpose of this longitudinal investigation was to examine the extent to which the stressor of premature forced reentry from studying abroad during the COVID-19 pandemic (e.g., reentry shock, reacculturative stress) was predictive of stress-related compromised mental health (i.e., perceived stress and loneliness) into the subsequent academic year. A total of 133 college students from different U.S. universities completed a short online questionnaire as soon as they came back from their study abroad experience (T1) and approximately six months after (T2), when they were resuming their Fall 2020 academic semester. Consistent with the stress process model, secondary stressors associated with reacculturation were predictive, concurrently and longitudinally, of mental health outcomes, especially loneliness, indicating that students who had the hardest time returning home unexpectedly were at the highest risk for worsened mental health over the following months. These findings reveal that reacculturation following unplanned termination of a study abroad experience is not an event as much as it is a process that unfolds over a period of months, as would be understood from the perspective of the stress process model.