“…The CARS has been shown to be useful with preschool children (DiLalla & Rogers, 1994;Perry, Condillac, & Freeman, 2002;Schopler et al, 1988), school-aged children (Schopler et al, 1988), adolescents (Mesibov, Schopler, Schaffer, & Michal, 1989), and samples with wide age ranges (Sevin, Matson, Coe, Fee, & Sevin, 1991;Sturmey, Matson, & Sevin, 1992;Tachimori, Osada, & Kurita, 2003;Van Bourgondien, Marcus, & Schopler, 1992). The CARS is commonly used in clinical intervention programs, such as the model early intervention programs defined by Handleman and Harris (2001), to capture participants' behavioral profiles and severity. Some researchers also use it as an outcome measure (e.g., Perry et al (2002)), whereby a drop in CARS scores indicates a favorable response to therapy.…”