Psychometric Properties Of Leiden Index Of Depression Sensitivity-Revised (LEIDS-R) In Persian Language
Loading...
Date
2012-02
Authors
Ostovar, Shahla
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Currently no valid or reliable self-report instrument exists in the literature for recovered depressed (RD) individuals to use in evaluating cognitive reactivity (CR). CR is the degree of change in negative thinking in response to sad mood, and it has been found to play a key causal role in depressive relapse.
The present study aims to develop and validate a Persian-language version of LEIDS-R for use by psychologists’ and clinicians’ centers in Iran. LEIDS-R was translated into Persian and the content validated by experts’ judgment. The instrument was administered to 250 recovered depressed, RD (focus group) and 320 non-depressed, ND (control group) individuals from fourteen centers in Iran. The internal consistency and test-retest reliability of the LEIDS-R were high. Factor analysis and Differential Item Functioning (DIF) were used to determine the construct validity of the LEIDS-R. Statistical analysis based on Mantel Haenszel (M-H) Chi Square statistics was used for identifying DIF and Log-Odd Ratio (LOR) across the recovered depressed and non-depressed groups. M-H and LOR statistical results displayed no DIF for LEIDS-R. Concurrent validity of the LEIDS-R was confirmed with a Dysfunctional Attitude Scale (DAS) inventory. Comparison of the differential response between the two groups was done using the CR scores. The results demonstrate a significant difference between RD and ND groups in CR scores; the RD group score was significantly higher than the ND group score. This study yielded strong evidence in support of the construct validity of the original LEIDS-R inventory for this particular Iranian sample set.
Description
Keywords
To develop and validate a Persian-language version , for use by psychologists’ and clinicians’ centers in Iran