Response latency as a measure of behavior in the assessment of elopement.

Elopement is a common form of problem behavior but is relatively underrepresented in the functional analysis literature. One barrier to assessing elopement experimentally is the need to retrieve the subject following an instance of elopement. This retrieval confounds programmed session contingencies when the goal is to obtain repeated measurement of free-operant behavior. The current study evaluated latency to elopement as an alternative to free-operant measurement. We first compared response latency to allocation in 5-min sessions and then measured latency alone in a trial-based format. The identified reinforcers matched across both data analysis modalities in the session-based assessments, and the trial-based functional analysis showed a significant time savings in identifying the function of behavior over a session-based assessment. Results indicated that elopement serves idiosyncratic social functions in young children with intellectual and developmental disabilities, and that a latency-based assessment saves time while yielding equally clear results.