ABSTRACT
Background
Behavioural problems in individuals with intellectual disabilities have a negative impact on them. Limited assessment measures exist in Spain. This study aimed to validate the Behavior Problems Inventory-Short Form (BPI-S) in the Spanish population by examining its psychometric properties and factorial structures.
Method
This study included 458 individuals with intellectual disabilities evaluated by 137 professionals. The validity and reliability of the scale were examined.
Results
The validity of the measurement tool confirmed a three-factor model. Significant correlations were observed between problem behaviours and maladaptive behaviour indicators, with negative associations found between problem behaviours and adaptive behaviour scores.
Conclusions
The Spanish version of the BPI-S demonstrated good internal consistency and convergent and discriminant validities. The most common behaviours were identified, and the scale was refined to 28 items. The three-factor model showed an acceptable fit. Further research is required to establish clinical norms and explore the factorial structures.