What distinguishes Reach Out and Read from other interventions is its large and growing evidence base. Since 1991, the Reach Out and Read model has been studied by academic investigators in a variety of settings, providing an extensive body of peer-reviewed research on the effects of the program. The body of published research supporting the efficacy of the Reach Out and Read model is more extensive than for any other psychosocial intervention in general pediatrics. Additional studies that address language outcomes in children are in progress.