Awarded the 2022 Distinguished Career Mentorship in Gerontology Award by the Gerontological Society of America Behavioral and Social Sciences section. This award is given to individuals who have fostered excellence in, and had a major impact on, the field by virtue of their mentoring and whose inspiration is sought by students and colleagues.

Karen is co-editor of the "Handbook of Intraindividual Variability Across the Life Span," where she explores human development and behavior across the entire life span. In the handbook, leading researchers summarize recent findings on the extent, role and function of IIV in human development with a focus on how, when and why individuals change over time. The latest theoretical, methodological and technological advances are reviewed. The book explores the historical and theoretical background and challenges of IIV research along with its role and function in childhood, adolescence and adulthood. Edited to maximize consistency and accessibility, each chapter includes an introduction and a review of the research and most explore future directions, new theoretical developments, and conclusions and implications.