“…Both of these tools have demonstrated acceptable validity and reliability with certain groups of children (e.g., the CPS with typically developing children [Barnett, 1990[Barnett, , 1991a[Barnett, , 1991b and the ToP with children with attention deficits and physical disabilities [Harkness & Bundy, 2001;Leipold & Bundy, 2000]). However, limited research has been completed regarding their use with children with autistic disorder (Reed, Dunbar, & Bundy, 2000). Lieberman (1977) proposed five manifestations of playfulness: physical spontaneity, social spontaneity, cognitive spontaneity, manifest joy, and sense of humor.…”