The Role of Positive Psychology Constructs in Predicting Mental Health and Academic Achievement in Children and Adolescents: A Two-Year Longitudinal Study

This longitudinal study presents the first examination of the relation between positive psychology constructs, mental health
and academic achievement of students in Portugal. Using a sample of 367 middle-school students, the study revealed that crosssectional
and longitudinal patterns of correlations between positive variables were consistent with expectations for the most part and
suggested that hope, life satisfaction and self-worth have meaningful relations with mental health and academic achievement.
In addition, no significant changes were found between the variables in study across the administrations and throughout the
two cohorts, and all the variables in study demonstrate moderate to high stability across a 1- and 2-year time frame. Hope
predicts students’ academic achievement, and life satisfaction was the strongest predictor of mental health, over 2-years.
The implications of the findings are discussed with reference to prior studies and for future research.