[1] Univ Complutense Madrid UCM, Sch Psychol, Dept Social Work & Diferential Psychol, Campus Somosagua,Ctra Humera,s-n, Pozuelo De Alarcon 28223, Spain
[2] Univ Salamanca USAL, Sch Psychol, Dept Social Psychol & Anthropol, Campus Ciudad Jardin Avda Merced 109-131, Salamanca 37005, Spain
[3] Univ San Sebastian USS, Fac Odontol & Ciencias Rehabil, Concepcion, Chile