Leiden Index of Depression Sensitivity-Revised (LEIDS-R): Spanish validation proposal.

To adapt and validate the Leiden Index of Depression Sensitivity-Revised for evaluating cognitive reactivity to depressive mood to Spanish and validate this Spanish version. To find the scale's factor structure and psychometric properties. The sample consisted of 600 participants (103 patients and 497 subjects from the general population). A four-factor structure was found, a general factor evaluating cognitive reactivity was proposed and ten items were eliminated. A brief version of the (LEIDS-R24) scale is proposed. The factors and the overall scale have adequate internal consistency, and the results of validation show that all the factors on the scale predict depressive symptomatology (BDI-II) adequately, and are highly correlated with the Dysfunctional Attitudes Scale and BDI-II scales. The complete scale adequately discriminated depressive symptomatology in general population subjects and patients with anxiety and depressive disorders. No significant differences were found in the LEIDS-R24 measurement between subjects with anxiety and depressive disorder. The LEIDS-R24 scale may be a useful brief measure for evaluating cognitive reactivity to depressive mood and analyzing the vulnerability which could be common to persons with anxiety and depressive disorders.