The Leiden Index of Depression Sensitivity-Revised (LEIDS-R) and its revision (LEIDS-RR): An investigation of the internal structure and conceptual validity in a Norwegian sample

Abstract

The purpose of this study was to evaluate the internal consistency, factor structure, and validity of the Leiden Index of Depression Sensitivity-Revised (LEIDS-R) and a recent revision of the LEIDS-R (LEIDS-RR) in Norway. The LEIDS-R is a self-report inventory measuring cognitive reactivity. Cognitive reactivity is defined as the relative ease with which negative thinking is activated by mild low mood and has been shown to be a strong predictor of relapse of depression. Hospital employees and psychology students (N = 240) completed the LEIDS-R and measures of depression, repetitive negative thinking, and mindfulness. The results showed that Cronbach’s alpha was equally high for both the LEIDS-R and LEIDS-RR total score (α = .92), indicating good internal consistency. Confirmatory factor analysis of the LEIDS-R suggested an acceptable model fit for the original first-order six-factor model. Confirmatory factor analyses of the LEIDS-RR suggested the best fit for a bifactor five-factor model. Correlational analyses showed positive associations of the LEIDS-R and LEIDS-RR scales with depression and repetitive negative thinking and negative relationships with mindfulness. It is concluded that the Norwegian versions of the LEIDS-R and LEIDS-RR appear to be both reliable and valid for future use.