"This Guide updates the learning on Outcome Harvesting + Attitude Change (OH+AC), an adapted version of Outcome Harvesting that adds the consideration of attitudes while upholding Outcome Harvesting’s primary concepts and core principles. Whereas Outcome Harvesting centers behavior change among social change actors, attitudes can be a valuable addition to Outcome Harvesting wherever inner transformation is essential for achieving the outward behavior change that drives social change program results, or wherever attitudes are particularly central to the worldview of program stakeholders. There has been significant experience and feedback since the trial version OH+AC toolkit, originally published by Tearfund, was launched in 2020. It is time to share what we have learned. One key learning is that most colleagues find it easier to learn OH+AC if they already have a solid grasp of Outcome Harvesting. So, unlike the trial version toolkit, this update is designed for evaluation facilitators with some Outcome Harvesting experience. We assume some evaluation basics, and we keep the reminders of Outcome Harvesting basics to a minimum. However, we do not assume that you are an Outcome Harvesting expert or that English is your first language. We aim to explain the addition of attitude considerations to Outcome Harvesting in a way that is complete and clear." (Introduction, page 7)

"With gratitude to: Tearfund, the original publisher of the OH+AC trial version toolkit of 2020, titled Change Inside and Out: An Outcome Harvesting plus Attitude Change Toolkit for Peacebuilders and other Changemakers. Trial Version" (Seite 2)