All methodologies come with limitations which need to be acknowledged in terms of their potential impact on the data. In this chapter we focus on the criticisms that are directed at stimulated recall. We have organized these problem areas into sections that deal with issues of validity and reliability. Procedural problems with the use of the methodology (and recommendations for avoiding issues where possible) were already covered in the previous chapters (see Chapters 3 and 4). Following this discussion of limitations, we think about some of the ways in which stimulated recall can enhance empirical research, and in fact deal with some of the limitations observational research faces, particularly where questions remain unanswered.