<p><strong>Objective</strong><strong>:</strong> The goal of this research was to validation of RST in children. <strong>Method:</strong> For this purpose, 417 children were selected, then RST, Positive and Negative Affect and Depression Anxiety Stress Scales were distributed among them to respond. The reliability was assessed by alpha coefficient, test-retest and split-half coefficient, and validity was assessed with other questionnaires to determine the psychometric properties of the RST. The confirmatory factor structure was assessed by confirmatory factor analysis. <strong>Results</strong><strong>:</strong> Factor analysis indicated that RST has 3 factors and checking the validity of the Inventory using Cronbach's alpha, test-retest and split-half coefficient reflects the stability of the scale, the criterion validity of the RST with other questionnaires showed desirable discriminant and convergence validity. <strong>Conclusions</strong><strong>:</strong> Overall, the findings indicated that RST has good psychometric properties in children, and the tool can be used in studies in normal Population. However, it seems that RST subscales has a low internal consistency in east children in comparison with original version. Despite the good psychometric properties of the questionnaire, also it seems that it cannot distinguish between BAS and BIS.</p>