Sessions for Ian were conducted at his group home in the common eating area. The room was approximately 10 by 10 feet and contained a table with chairs and was adjacent to the kitchen, living room, and Ian’s bedroom, which contained preferred items such as a television and toys. Sessions for Gavin were conducted at the day treatment center in an approximately 14 by 14 feet assessment room with a table and two chairs. All sessions were video recorded by the research team.