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Feliciano H. Veiga
This study presents both the construction procedures and the results obtained with a 16- items Disruptive Behavior Scale Professed by Students (DBS-PS) for Portuguese students.
The sample was made of 915 subjects from the 7th, the 8th, and the 9th grades. Results obtained with that self-report instrument were analyzed, and measures of reliability and of construct and concurrent discrimination were estimated. Three specific factors were identified for the school disruption through varimax-rotation factor analysis. These factors accounted for 51 per cent of the total variance. Reliability coefficients ranged between .67 and .88 for different factors and groups (socio-economic status, residential zone, sex, age and grade). Concurrent validity coefficients were satisfactory. Results were in accordance with the psychometric theory of psychological evaluation.
