The purpose of this study is to examine Knowles' theory of andragogy and his six assumptions of how adults learn while providing evidence to support two of his assumptions based on the theory of andragogy. As no single theory explains how adults learn, it can best be assumed that adults learn through the accumulation of formal and informal education, and lifelong experiences. Research was conducted through the Educational Resources Information Center (ERIC) system, and seven peer-reviewed articles were located for this purpose. A literature review of these articles was conducted to determine their relevance in the study. Results revealed strong connections between Knowles' six assumptions and learning methods of adult learners.