The American Psychological Association (APA) put forth learning guidelines for undergraduate psychology majors, which outline learning outcomes for students completing a baccalaureate degree in psychology. Although these outcomes have been identified, no standard measure exists to ensure that undergraduates are meeting the APA’s recommendations. Though the APA Guidelines outline outcomes for completion of entire baccalaureate programs in psychology, many students only take introductory psychology courses as part of their degree program (i.e., non-psychology majors). Thus, there is a need for a free and available assessment tool based on the Guidelines that can be used to assess learning outcomes for students in introductory psychology courses, whether or not they are psychology majors. The present study aimed to validate the Psychology Outcomes Measure (POM), a measure based on Goals 1 and 2 of the APA Guidelines for the Undergraduate Psychology Major: Version 2.0, using data collected from participants currently (n = 154) or previously (n = 63) enrolled in an undergraduate introductory psychology course at a large public university. Results of the measure suggested a two-factor solution for the questions assessing Goal 1 (Knowledge Base in Psychology) and a single factor solution for the questions assessing Goal 2 (Scientific Inquiry and Critical Thinking). All factors showed good internal consistency reliability and predictive validity. Future research should examine the POM in other samples. The POM can be used to track development of Psychology Knowledge and Scientific Inquiry. (PsycInfo Database Record (c) 2022 APA, all rights reserved)