Abstract Programs based on applied behavior analysis (ABA) have become increasingly popular as interventions for childhood autism. A number of leading behavior analysts even have claimed that many children with autism can be "cured" through such programs and therefore strongly recommend ABA over alternative interventions. The extant research literature, however, does not support these claims. ABA programs for childhood autism are indeed promising, but exaggerated claims may undermine confidence in the approach, and are misleading to families of autistic children and to other stakeholders.