“…Several previous studies have conducted functional analyses of problem behaviors occasioned by the interruption of rituals or stereotypy (Hagopian, Bruzek, Bowman, & Jennett, ; Hausman, Kahng, Farrell, & Mongeon, ; Kuhn, Hardesty, & Sweeney, ; Lang et al, ; Murphy, Macdonald, Hall, & Oliver, ; Ollington, Green, O'Reilly, Lancioni, & Didden, ; Rodriguez, Thompson, Schlichenmeyer, & Stocco, ; Sigafoos et al, ). Hausman et al () assessed ritualistic door opening and closing using functional analysis.…”