A descriptive assessment of trial‐based functional analysis research

Abstract

Since its inception, modifications to experimental functional analyses have been conducted to improve contextual fit. One variation, a trial‐based functional analysis (TBFA), naturally embeds conditions within the environment, has been used across diverse participants (e.g., neurotypical development, autism spectrum disorder [ASD], etc.) and settings. Although interest in TBFA has grown, few TBFA literature reviews have been conducted. Detailed participant characteristics, reliability measures across dependent and independent variables, social validity, and details of function‐based interventions have yet to be reported. Therefore, the purpose of the literature review was to replicate and extend past TBFA reviews by assessing publication characteristics (e.g., authors, year), participant characteristics, procedures (e.g., number of trials), validation across comparison FAs, function‐based interventions, reliability (interobserver agreement [IOA] and procedural integrity) measures, social validity, and intervention details (type. Implementer, setting, and outcomes. We identified 32 articles across 88 participants. Strengths of TBFA research include usability across a range of problem behaviors in natural settings (i.e., in classrooms or in homes) by teachers and direct service providers, IOA, and the inclusion of effective function‐based interventions. Most research included preschoolers with ASD and other disabilities. Limitations and areas for future research are discussed.