|Just what it says really! Two important issues to hold in mind.|
Firstly that the idea is fairly new. On the positive side this surely related to a greater respect for the voice of the client through the 20th and early 21st Centuries and the recognition that expert or professional judgements and ratings were not enough on their own. On the down side it has undoubtedly gone with managerialism, a wish to spend as little as possible on services and with naively reductionist interpretation of scores.
Secondly that the multi-item, self-report questionnaire is not the only self-report measure: the PQ, the repertory grid, hybrid measures like PSYCHLOPS are equally “self-report measures” and it is possible to take purely qualitative self-descriptions and rate them to create qualitative outcome measures. The dominance of the multi-item questionnaire results almost entirely from the negative sides of the rise of self-report measures as such questionnaires are cheap, are treated as if they can be used by any client and that everyone sees the same measure, while it has strengths, leads into the reductionism and commodification of people’s distress and wish for help.
Try also #
User generated measures
Personal Questionnaire (PQ)
Through the whole book but particularly chapters 1 to 4, 9 and 10.