“…It may be that future revisions will be necessary and, if this is the case, it is likely to be due to the fact that the motivations of disordered clients are often not knowable (Rogers et al, 1989), leading to poor reliability because compulsion is not always obvious and malingering cannot always be ruled out. Despite these reservations and the fact that the majority of the published evidence revolves around single-subject case studies and retrospective reviews (eg Overholser, 1990), there have been sufficient cases of such service users who have been 'caught' and who are genuinely unable to explain their motivations, that the syndrome must exist (Hoffman, 1990).…”