The convergent validity of the Questions About Behavioral Function scale and functional analysis for problem behavior displayed by individuals with autism spectrum disorder

► We compared the QABF scores to the results of either a brief or an extended no-interaction functional analysis (FA). ► For five of the six participants, the QABF scores and the FA data converged. ► For one participant, there was partial convergence. ► It may be appropriate to embed the QABF into larger procedural guidelines for the assessment of problem behavior.