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The Behaviour Problems Inventory-Short Form: Reliability and Factorial Validity in Adults with Intellectual
Andréa N Mascitelli1, Johannes Rojahn1, Vias C Nicolaides1
1George Mason University, Fairfax, VA, USA.
Summary
The Behaviour Problems Inventory-Short Form (BPI-S) demonstrates good reliability and factorial validity in adults with intellectual disabilities. This validated the BPI-S subscale structure for assessing behavioral issues.
Area of Science:
- Psychometrics
- Intellectual Disabilities Research
- Behavioral Assessment
Background:
- The Behaviour Problems Inventory-Short Form (BPI-S) is derived from the BPI-01.
- Previous development utilized a large BPI-01 dataset.
Purpose of the Study:
- To investigate the reliability and factorial validity of the BPI-S.
- To assess the BPI-S in a new sample of adults with intellectual disabilities.
Main Methods:
- The study included 232 adults with intellectual disabilities from the USA and UK.
- Data were collected from participants across all intellectual functioning levels in day programs.
Main Results:
- The BPI-S exhibited acceptable internal consistency, inter-rater agreement, and test-retest reliability.
- Confirmatory factor analysis confirmed the three-subscale structure of the BPI-S.
Conclusions:
- The factor structure of the BPI-S was corroborated in the study sample.
- The BPI-S possesses adequate to good psychometric properties for use with adults with intellectual disabilities.
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