PURPOSE: to measure the influence of adapted physicalactivity to change the negative behaviour of girls livingin the Socialization Centre. METHODS: (1) Behaviour Assessment System for Children, Second Edition (BASC-2)a Self-Report of personality scale; (2) Pedagogical experiment (started one month ago); (3) Observation System;(4) Reflection; (5) Case study; (6) BASC2 ASSISTTM Plusscoring and reporting system. RESULTS: At the momentthere are ten 12-14 years old delinquents girls at the Socialization Centre. According to the survey results themain problems among girls are negative attitudes towardschool (average T-score Range from 61 to 71), a relativelyhigh level of sensation seeking (T-score from 60 to 75), abelow-average sense of control (T-score from 60 to 78),relatively high number of stressful feelings in social situ- ations (T-score from 65 to 72), depress feelings (T-score61 to 63), feelings of inadequacy (t-score from 64 to 71),poor interpersonal relations (T-score from 25 to 31), be- low-average levels of self-esteem (T-score from 29 to 35).CONCLUSIONS: T score results showed that most of thegirls are in the At-Risk Range and indicate the presenceof significant problems indicating potential or emergingproblems.The results of a few girls are in the Clinically Significant range . It indicates a high level of maladaptive behaviour or absence of adaptive behaviour. Subjective experiences of the girls reveal that adapted physical activityinfluences decision-making, social interaction, leadership,problem solving, critical thinking skill, decrease of aggression, tension, and dissatisfaction.