Italian validation of Multiple Visual Analogue Scales for Bipolarity (MVAS-BP) of Ahearn and Carroll

Abstract

The aim of the present study was to validate the Italian version and to assess the clinimetric properties of Ahearn and Carroll's Visual Analogue Scales for Bipolarity (MVAS-BP), a self-rating questionnaire measuring affective state. MVAS-BP consist of 26 items: 1 item assesses overall mood, 2 items anger and 23 items are based on the Carroll model of bipolar disorder (Consummatory Reward, Incentive Reward, Central Pain, Psychomotor Regulation). MVAS-BP have been translated into Italian and administered with Kellner's Symptom Questionnaire (SQ), Ryff's Psychological Well-Being Scales (PWB), and Cloninger's Tridimensional Personality Questionnaire (TPQ) to a normative sample of 450 people. The assessment was repeated after one month. Test-retest reliability, means scores, differences according to sociodemographic variables and correlations among the scales of MVAS-BP, SQ, PWB and TPQ were performed in order to assess clinimetric properties. Test-retest coefficients were highly significant. Significant sex differences were found in the scales of consummatory reward, central pain, psychomotor regulation and anger. MVAS-BP scales were significantly related with symptom and well-being scales, but with very low correlation coefficients, and only with one personality dimension, TPQ Harm Avoidance. MVAS-BP has been found to possess clinimetric properties and to record specific and different information from those investigated by other questionnaires.