MAP: A mnemonic for mapping BCTs to three routes to behaviour change.

There was good agreement on candidate BCTs for interventions designed to operate through Motivation, Action, or Prompted/Cued psychological processes. MAP is a mnemonic that can be used by non-specialist practitioners who implement behaviour change with their clients. MAP is not a replacement for sophisticated theory-based organization of BCTs required for theory testing. While providing practical guidance, further work is necessary to establish effectiveness of BCTs tailored to each route.