Rigor or rigor mortis: the problem of rigor in qualitative research revisited.

Issues are raised by the persistent concern with achieving rigor in qualitative research, including the rigidity that often characterizes the search for validity in qualitative work and the threat to validity that the search for reliability may pose. Member validation is highlighted as a technique that exemplifies not only the practical, but also the profoundly theoretical, representational, and even moral problems raised by all procedures aimed at ensuring the trustworthiness of qualitative work.