 Objectives : The main objective of this study is to evaluate the validity of a self-questionnaire so as to detect falling phobic seniors living at home. The optimal threshold of the questionnaire score, obtained from a receiver operating characteristic curve ROC curve, will let us evaluate its concordance compared to the gold standard, formed by DSM-IV criteria for specific phobia. The results of the questionnaire will be kept secret while the study occurs. The secondary objectives will be to control the feasibility of the self-questionnaire detecting phobia of falling, the validity of internal structure and external construction by the exploration of its correlation with other close psychological and physical health measures. 