Abstract

TORO TOBAR, Ronald Alberto; AVENDANO PRIETO, Bertha Lucía  and  CASTRILLON, Diego Alonso. Design and psychometric analysis of the Hopelessness and Suicide Ideation Inventory "IDIS". int.j.psychol.res. [online]. 2016, vol.9, n.1, pp.52-63. ISSN 2011-2084.

The objective was to design the Hopeless and Suicide Ideation Inventory, also know as IDIS - Sp anish acronym for inventario de Desesperanza e ¡deación Suicida - and to analyze its psychometric properties. A quantitative empirical research was conducted employing a non-experimental design, an instrumental variable and cross-sectional analysis. Ihree hundred and thirty-nine people participated in the study (67.6% females, 31.6% males), in which 54.6% were students and 34.8' % were employees. Participants completed the IDIS, the Beck Depression Inventory (BDI-II), the Po sitive and Negative Suicide Ideation Inventory, and the Beck Hopelessness Scale. The results indicated an inter-rater reliability and a positive convergent validity in both scales. Suicidal ideation revealed an internal consistency of α = .76, and α = .81 for hopelessness; a total variance of 41 .77% and 47.52% was obtained correspondingly. Based on the Item Response Theory (IRT), the adjustments for INFIT and OUTFIT fell under the expected range. It was concluded that the IDIS is a reli able and valid measure, however, further evaluations on sensitivity and specificity are encouraged.

Keywords : Suicide; Suicidal ideation; Hopelessness; Psychometric; Classical Test Theory and Item Response Theory.

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