Career Development; Adult learning theory primarily focuses on how adults Through awareness of adult learning theory, andragogy, adult learning principles. Adult Personality and Development: Theories and Concepts. Thousand Oaks, CA: Sage Publications. About the Author. Lisa M. Baumgartner is an Assistant Professor of Adult Education at Buffalo State College in Buffalo, NY. Her interests include adult learning and development, identity development, and qualitative research. Typical adult learning theories encompass the basic concepts of behavioral change and experience. From there, complexities begin to diverge specific theories and concepts in an eclectic barrage of inferences. Up until the s basic definitions of learning were built around the idea of change in.