Improving pretend play for children with autism through experiencing the stimulus properties of real objects.

Children with autism spectrum disorder (ASD) often lack symbolic play skills. Attribution of pretend properties (APP) is a type of symbolic play in which a child tacts pretend properties of an object (e.g., smelling a toy flower and saying, "It smells like a rose!"). Three Chinese boys (5-6 years of age) with ASD served as participants. A multiple-probe design across 5 objects was used to determine the effects of an intervention that involved having the child experience and tact sensory properties of real objects (e.g., rose). Corresponding test objects, including mock (e.g., a toy flower) and arbitrary objects (e.g., a stick), were used to evaluate whether tact responses for sensory properties were transferred. Results indicated that all 3 children emitted tacts of stimulus properties for test objects and maintained the skill for 7 to 10 weeks following the intervention. Two participants also tacted novel (nontarget) properties for test objects.