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.
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