Behavioral and cognitive-behavioral strategies, including exposure, social skills training, and peer-mediated approaches, used to treat childhood shyness and related impairments are described. In addition, relevant outcome studies published within the past 20 years are evaluated, and limitations regarding the generalization, maintenance, and social validity of the reported treatment gains are addressed. Although the interventions reviewed have demonstrated short-term merit in ameliorating social and emotional impairments, such as problematic peer relations and internalizing difficulties, there currently is a lack of evidence to support the social validity and long-term generalization and maintenance of such behavioral gains. Thus, recommendations for future research are made, including the need to (a) assess the social validity of treatment outcomes, (b) utilize important socialization agents (e.g., parents, teachers, peers), and (c) conduct prevention research and longitudinal outcome studies.