This research presents a validation of an adaptation in French of the Boredom Proneness Scale (BP) intitled �Echelle de disposition � l'ennui�(EDE). Three studies were conducted to evaluate psychometric properties, construct validity and structural validity. A first study with student participants demonstrated acceptable fidelity (test-retest reliability, internal consistency...) and validity indices. However a confirmatory factor analysis did not support the unidimensional structure ofthe Boredom Proneness Scale. The second study with a sample of drug addicts assessed the validity of the scale using the �Known-Groups� method. Results supported the construct validity of the scale. A third study examined elderly persons. Results of this study point to the reliability and validity of the French version of the Boredom Proneness Scale. Furthermore, a bidimensionality of the boredom construct was found through an exploratory factor analysis.