The work of occupational (OT), physical (PT), and recreational therapists (RT), as well as speech- language pathologists (SLP), is interrelated and requires effective teamwork and collaboration to optimize patient outcomes and satisfaction. Literature shows that health care professionals are ill prepared to work in an interprofessional manner due to professional socialization processes, specific discipline cultures leading to separateness, and lack of cross professional competence. This study seeks to identify if there are differences in the perceptions of OT, PT, RT, and SLP professionals related to their individual perceptions of their beliefs (ability), behaviors (comfort), and attitudes (value) towards interprofessional collaboration. Therapists completed the Interprofessional Socialization and Valuing Scale (ISVS), a tool published in 2010. Factor analysis was used to evaluate the components of the scale, and then these were compared to the factors identified by the original authors. Since data was not normally distributed, the Kruskal-Wallis was used to identify if there were significant differences by discipline in ability, value, and comfort related to interprofessional collaboration. Findings of this study indicate that in this sample of OTs, PTs, RTs, and SLPs from Michigan that there are not significant differences in self-perceived ability, value, and comfort related to interprofessional collaboration. Results of the factor analysis of the ISVS completed by health care professionals shows differences from the original analysis on health care students, leading to the need for further study and evaluation of the ISVS to determine its usefulness. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]