The ‘Most Significant Change’ (MSC) Technique : a guide to its use

"MSC is  a form of participatory monitoring and evaluation. It is participatory because many project stakeholders are involved both in deciding the sorts of changes to be recordedandin analysing the data collected. It is a form of monitoring because it occurs throughout the program cycleandprovides information to help people manage the program. It contributes to evaluation because it provides data on impactandoutcomes that can be used to help assess the performance of the program as a whole." - http://mande.co.uk/special-issues/most-significant-change-msc/