Facilitating behavior change: Introducing the Transtheoretical Model of Behavior Change as a conservation psychology framework and tool for practitioners.

The primary opportunities for improved conservation and sustainability outcomes are through changing human behavior. Zoos, aquariums, and other public-facing biodiversity conservation institutions offer an important space for environmental learning and facilitating proenvironmental behavior change. We have focused, in this review, on examining common behavior change models as well as the Transtheoretical Model (TTM) of Behavior Change​​​​​, a widely regarded model within the health fields and, recently, in the fields of environmental and leadership studies, with new research applying the TTM specifically in a zoo setting. We have discussed critiques of the TTM and rebuttals to those critiques. We have presented examples of TTM applications in a zoo setting. Our objective has been to explore the TTM as a possible "best fit" framework and tool for zoo and aquarium practitioners in facilitating proenvironmental behavior. Key findings include that (a) the TTM differs significantly from other proenvironmental behavior theoretical models, including those that are prevalent in the conservation psychology literature and applied by zoos and aquariums, in terms of the TTM stages of change and processes of change constructs; (b) the TTM appears to overlap significantly with the 10 interventions or treatments identified by researchers as the most effective approaches to facilitating proenvironmental behavior; and (c) there is nascent and promising application of TTM constructs in zoo and aquarium programming. We remain impressed by the potential of the TTM to address a critical question within the conservation psychology research field concerning proenvironmental behavior: what specific tools to employ and when.