A total of 180 (90 male and 90 female) students, from three primary schools in Thessaloniki, Greece, participated in the study. Their ages ranged from 7 to 12 years.
A total of 180 (90 male and 90 female) students, from three primary schools in Thessaloniki, Greece, participated in the study.Their ages ranged from 7 to 12 years.