Adapting the Cognitive Triad Inventory for Children Spanish population.

Depression is one of the mental disorders that concern worldwide. One theory that has attracted more researches is the Beck's cognitive theory of depression. The Cognitive Triad Inventory (CTI) has been developed to evaluate the different components of the cognitive triad, although most studies had been developed in adult and adolescent population. The aim of this work is to show evidence of factorial validity of the reduced version of the CTI, and the study of the psychometric properties of the inventory in children. In the sample of 3292 children with age between 8 and 13 (M=9.86; SD =1.24), the results showed a better factorial fit with a bifactorial model (positive triad and negative triad). The reliability of the dimensions is good (alpha=.88 and .92 respectively) and convergent validity evidence is adequate. The inventory was evaluated from the Item Response Theory framework, showing correct properties. Finally the norms of the questionnaire were made addressing the gender differences that were found previously.