Résumé:
The COVID-19 pandemic, and the associated confinement, imposed a novel personal and
social context for university students; nevertheless, few studies have addressed the effects
of this on distance university students. Indeed, defining the needs of these students under
such unique circumstances will allow them to receive the support necessary to effectively
reduce their perceived stress and improve their academic achievement. A predictive model
was designed to examine the direct effects of the variables¿ age and perceived study time
on stress and academic achievement in students in an online learning context, as well as to
assess the indirect effects through the mediating role of academic self-efficacy. Using path
analysis, the model was tested on a sample of 1030 undergraduate students between 18
and 60 years old enrolled on a psychology degree course at the UNED (National Distance
Learning University of Spain). The model provides a good fit to the data, confirming the
mediating role of academic self-efficacy. Perceived study time is a factor negatively asso ciated with stress and positively with academic achievement. However, it appeared that
age was not related to academic achievement, indicating that academic self-efficacy had no
mediating effect on these two variables. Academic self-efficacy is a mediator and protec tive factor in challenging times like the COVID-19 pandemic. These results may contribute
to the design of educational and clinical interventions for students at an online learning
university over an extended age range