Figure displays the results of the functional analysis for Mario's stereotypic responses.Throughout sessions Mario exhibited a high frequency of stereotypy in the all conditions.For all of the sessions a mean of % (range, 0% to 0%) of intervals contained stereotypy inthe Alone condition, a mean of % (range, 0% to %) of intervals contained stereotypy inthe Play condition, a mean of (range, 0% to %) of intervals contained stereotypy in theDemand condition, and a mean of % (range, % to 0%) of intervals contained stereotypyin the Attention condition. The results indicated that the function of Mario's stereotypy mightbe maintained by multiple sources of consequences including sensory and social reinforcement.It seems to be reasonable to further find out what specific sensory sources contribute to suchaberrant behavior in order to reduce it. Therefore, Experimental was further conducted toexamine the sensory properties of Mario's stereotypic behavior.