Аннотация:Social behavioural and action research focusing on socially marginal groups lends itself to participatory methods. This paper describes three evaluation projects which used participatory methods to a lesser or greater extent. The first concerns the process evaluation of a mobile needle and syringe exchange scheme. The second was an action research project involving a peer-led intervention aimed at sexual health promotion targeting gay men. The third was another action research project that explored the health promotion needs of homeless people. The participatory component improved with each successive project. Where applicable, researchers should consider the potential of further involving their target group and other interested parties in research and development, as this can provide added value and enhance the evaluation process.
