The Longitudinal Psychometric Properties of the EAS Temperament Survey in Adolescence

Abstract

Studies on the psychometric properties of the EAS Temperament Survey (EAS) have produced equivocal results. In particular the psychometrics of the EAS are largely unknown in adolescence. Confirmatory factor analysis was used to explore the EAS structure in adolescents. Structural equation modeling was also used to assess measurement invariance and factor stability. A modified 4-factor model provided the best fit to the data and demonstrated reasonable longitudinal invariance and stability. Furthermore, the standardized factor scores correlated at near unity with the sum of observed scores, suggesting factor interpretations remained unchanged. However, the modifications suggest that further work is necessary.

Acknowledgments

This work was funded by a Wellcome Trust program grant (No. 053642) and carried out within the National Institute for Health Research Collaborating Centre for Applied Health Research and Care hosted by the Cambridge and Peterborough Foundation Trust and the University of Cambridge. Ruth Spence is funded by a doctoral studentship through the Collaboration for Leadership in Applied Health Research.