Using the Performance Diagnostic Checklist to evaluate and promote paraeducators' treatment fidelity.

Paraeducators, who increasingly serve as implementers for students in special education, can struggle with intervention fidelity. Special educators, often responsible for providing paraeducators with support, receive limited supervision training. From organizational behavior management, the Performance Diagnostic Checklist-Human Services (PDC-HS) is a checklist to detect reasons for poor workplace performance and identify aligned support. Utilizing a multiple baseline design, this study evaluated the impact of PDC-HS indicated implementation support on the intervention fidelity of five paraeducators implementing six behavior intervention plans for students receiving special education services. The PDC-HS indicated that all paraeducators would benefit from behavior skills training and visuals of the plans, in addition to other specific supports for individual paraeducators (e.g., prompts, feedback). These implementation supports were effective in improving intervention fidelity for four paraeducators, whereas one paraeducator (across two students) did not respond to these supports. Changes in student outcomes (i.e., academic engagement, disruptive behavior) were inconsistent, suggesting that the behavior intervention plans may have needed to be revised. Usability data suggested that the PDC-HS and indicated supports were generally acceptable, but revisions may be warranted. The implications of this study for school-based implementation support research are discussed.