Putting people into groups as a way to create accountability, social cohesion, and social diffusion that leads to persistent behavior change.

Ways to enhance people's environmentally conscientious identity is a foundation to persistent intrinsic motivation.

A digital, physical, or emotional reward given to the participant after they complete a task or improve their performance.

A tool for people to publicly display their green performance that stimulates others to imitate the behavior.

A mechanism for tracking progress towards a goal that brings attention to, and rewards progress.