Questions of effectiveness, impact and evaluation continue to be most relevant for the field of peacebuilding and conflict transformation: Adam Barbolet, Rachel Goldwyn, Hesta Groenewald & Andrew Sherriff report with intimate knowledge on the development of "conflict sensitivity" as an alternative to PCIA; Kenneth Bush sends thought-provoking "field notes", reflecting on his learning in the context of applying PCIA in the South; Thania Paffenholz presents a comprehensive overview of the "Aid for Peace Approach". Short reflection papers by all authors discuss the propositions. Berghof Handbook Dialogue 4 sheds light on progress and controversy regarding the new trends in peace and conflict impact assessment.