Although there is an extensive body of research into Mutual Aid, most studies are methodologically weak, typically describing correlations without the ability to infer causation (see Appendix A). This has led some commentators to conclude that there is little or no evidence for this form of support. We conclude that this is an out-dated position. The increasing numbers of higher quality studies, along with extensive corroborative research supports more robust conclusions.
There is strong evidence that participation in Mutual Aid groups improves recovery outcomes and evidence that greater levels of participation are associated with better outcomes.