An Initial Evaluation of an Assessment Method for the PEAK Relational System Direct Training Module

Area of Science:

• Behavior analysis
• Psychometric properties of assessment tools
• Autism spectrum disorder interventions

Background:

• Effective treatment requires valid and reliable assessment measures.
• Limited research exists on the psychometric properties of assessment tools in behavior analysis.
• Practicing behavior analysts face time constraints from insurance companies for comprehensive assessments.

Purpose of the Study:

• To evaluate the psychometric properties and content validity of the Promoting the Emergence of Advanced Knowledge Relational Training System: Direct Training Module (PEAK-DT).
• To assess the correspondence between the PEAK indirect assessment (PEAK-IA) and PEAK preassessment (PEAK-PA) for the PEAK-DT module.
• To determine which assessment method (PEAK-IA or PEAK-PA) offers the best predictive validity of actual performance on the PEAK-DT module.

Main Methods:

• The study evaluated components of the PEAK-DT for children with autism.
• It assessed the correspondence between PEAK-IA and PEAK-PA.
• Comparisons were made to determine predictive validity of actual performance on the PEAK-DT module.

Main Results:

• PEAK-IA (completed by parents) and PEAK-PA demonstrated moderate correspondence.
• PEAK-PA exhibited the strongest predictive validity of direct testing outcomes.
• The findings suggest potential for optimizing assessment efficiency in behavior-analytic practice.

Conclusions:

• The PEAK-PA is a valuable tool for predicting performance on the PEAK-DT module.
• Behavior analysts can utilize these findings to streamline assessments within time constraints.
• Further research is recommended to explore the implications for clinical practice and assessment development.