Abstract
This study examined the effectiveness of detailed written instructions (WI) and a task analysis data sheet (TA DS) in training three undergraduate students with no previous coursework in Applied Behavior Analysis (ABA) to conduct trial-based functional analyses (TBFA). This study extended previous research by using instructional materials that were written using conventional language and did not include information on the principles of ABA or the underlying rationale for functional analysis methodology. Although the WI and TA DS produced significant increases in performance and reliable data collection on the targeted problem behavior, small-group performance feedback training was necessary to achieve mastery across all trial types. Results offer a socially valid training package to teach paraprofessionals to conduct TBFAs in applied settings.