In this study were included 1292 children, 7 to 11 years old, from different rural and urban regions in Romania. 33 subjects were excluded because they didn’t complete 75% of the items or more. From the 1259 children who met the selection criteria, 552 were boys (43.8%), and 707 girls (56.2%). They live in families with a low socio-economic status and study in schools from disadvantaged communities. All children are enrolled in mainstream education system.