Professional identity is one outcome of successful socialization. The purpose of this study was to understand how socialization in graduate programs contributes to the development of professional identity for new ships between program qualities, standards, activities, and experiences and measures of professional identity. Out-of-class experiences were tions for graduate preparation programs and supervisors are discussed. Socialization in graduate preparation programs is a developmental, two-way process (Tierney & Bensimon, 1996) "through which individuals gain the knowledge, skills, and values necessary for successful entry into a professional career" (Weidman, Twale, & Stein, 2001, p. iii). Through the socialization process, "persons internalize behavioral norms and standards and form a sense of identity and commitment to a professional field" (Weidman et al., p. 6); they transform from outsider to insider. A result of a successful professional socialization process is development of a professional identity. Professional identity is the "internalization of the norms of the profession into the individual's self-image. .. [and] the acquisition of the specific competence in knowledge and skills, autonomy of judgment, and responsibility and commitment of the profession" (Bragg, 1976, p. 11). Failure to become well socialized and develop a professional identity may limit access to or effectiveness in professional roles and, therefore, it is important to understand this process (Ibarra,