Leveraging human-centered design to implement modern psychological science: Return on an early investment.

Although classic models of implementation emphasized the importance of innovation characteristics in their adoption and sustained use, contemporary implementation research and practice have deprioritized these variables. Human-centered design (HCD) is an approach that grounds product development in information collected about the people and settings that will ultimately use those products. HCD has strong roots in psychological theory, but its application is typically limited to the development of digital technologies. HCD is rarely applied to the design of psychosocial innovations-including both service-recipient-facing interventions and implementation strategies-within the applied psychological disciplines. The current article reviews the psychological origins of HCD and details pathways through which HCD theories and methods can be leveraged to advance the "core tasks" of contemporary implementation research and practice in psychology. These include (a) identification of multilevel implementation determinants through specification of user needs and contexts; (b) tailoring of implementation strategies, such as contextually driven intervention redesign; and (c) evaluating implementation mechanisms and outcomes, including disentangling how the core HCD focus on usability relates to closely associated implementation variables such as acceptability, feasibility, and appropriateness. Collectively, these applications provide directions through which to leverage the mature field of HCD, maximize psychology's return on its early theoretical investment, and promote the large-scale impact of findings from across the applied fields of psychology. (PsycInfo Database Record (c) 2020 APA, all rights reserved).