OBJECTIVE Standardized patients (SP) are a tool utilized regularly in athletic training to promote student confidence and independent thinking. SP are widely used in nursing, physical therapy, and in over 80% of medical education programs. The use of SP to supplement student learning and career preparation, in the undergraduate setting has been a validated in increasing student confidence. SP’s are a tool that utilize an actor trained to portray a patient who has a specific medical condition or illness and the actor is trained to respond to the students in a consistent manner. SP’s allow students the opportunity to engage in patient-centered experiences that may include history-taking, physical examination, interpersonal skill development or a combination of all of these elements. Additionally, students value the use of SP’s to improve clinical confidence and enhanced learning experiences. The use of standardized patients in academic programming enhances a student’s clinical experience. From medical education, standardized patients have shown enhancements in students critical thinking, self-efficacy, and communication skills. As the requirements to become a credentialed athletic trainer have shifted from a bachelor’s degree to a master’s degree the time developing confidence in autonomous clinical practice and critical thinking skills have lessened. A sample of masters and bachelor’s students did not show a significance in critical thinking ability of master’s vs. bachelor’s students. From this research it was suggested that athletic training pedogeological programming investigate high-impact practices to promote critical thinking. The use of standardized patients to assess critical thinking is a high-impact practice that requires further investigation. With that, the purpose of our study was two- fold. First, we wanted to identify if students critical thinking improved with the implementation of standardized patients. Second, we wanted to determine if students felt prepared to implement critical thinking in a patient or stakeholder encounter. STUDY DESIGN AND SETTING Prospective Cohort Study, 2-year, Collegiate Master Athle(c Training Program INTERVENTION Over the course of two academic years the same cohort was exposed to 5 separate SP encounters. One week prior to and immediately following each encounter students completed the Watson-Glaser Abbreviated Critical Thinking Inventory (CTI) and the Learner Critical Thinking (CT) Self- Assessment Inventory. The Watson-Glaser Abbreviated CTI is a widely accepted and utilized appraisal tool for measuring critical thinking.9 The tool is constructed around five critical thinking subscales: 1) inference, 2) recognition of assumption, 3) deduction, 4) interpretation, and 5) evaluation of arguments. The abbreviated Watson Glaser CTI has two questions within each of the five subscales, for a total of 10 questions. The Learner CT Self-Assessment is an 11- question survey tool designed to ask the student how well prepared they feel, as well as how appropriately course instructors prepared them for the critical thinking activity. This inventory asked participants to rate how the instructor of the course helped students integrate critical thinking into SP preparation, as well as how often the course instructor supported the critical thinking process. MAIN.OUTCOME.MEASURE The Watson-Glaser Abbreviated CTI and Learner CT Self-Assessment inventory were both administered one week prior to and immediately following all 5 standardized pa(ent encounters. The main outcome measures were the pre-post scores collected from the two inventories. All outcomes were assessed independently as well as comprehensively across all 5 Standardized Pa(ents. RESULTS Student scores on the Watson-Glaser CTI showed statistically significant differences overall from case one to case five for ability to infer, assume, and deduce (p=0.02, 0.03, & 0.01). Table 2 shows results of overall and sub- scale outcomes for the Watson-Glaser Abbreviated CTI. Additionally, students felt more prepared to implement critical thinking on case five compared to case one (p= 0.01) on the Learner CT Self-Assessment. Students generally showed improved critical thinking abilities across all 5 standardized patient encounters with the largest improvement being observed in case three. Outcomes on Learner Critical Thinking Self-Assessment demonstrated improved preparedness within each case, except for case five which implemented a new patient delivery strategy. Lastly, students identified overall increased preparedness across all five cases. CONCLUSIONS The results of this study indicate that the use of standardized patients to integrate and challenge critical thinking is likely a sufficient tool. With the use of standardized patients to supplement the clinical experience students critical thinking, critical self-reIlection, interpersonal skills, and confidence are likely to improve. Academic programs should continue to integrate critical thinking inventories and challenges into programmatic assessments and outcomes. Specifically, programs should seek to incorporate critical thinking related to inferring, interpreting, and argument. [ABSTRACT FROM AUTHOR]