In 2018, five articles were published pertaining to the focus group method. Two of these articles discuss the key differentiating attribute of focus groups, i.e., participant interaction and engagement, and the important role this attribute plays in the integrity of the research.
The interactive component of the focus group method also raises questions concerning mode, which is the subject of two other articles in this compilation. Specifically, these articles address the strengths and limitations of the in-person and online asynchronous focus group modes.
The fifth article in this paper discusses the concept of saturation in the context of determining the “right” number of focus groups to conduct for a particular study. Saturation has been discussed before in RDR, with the emphasis being on the idea that saturation alone is an inadequate measure by which to derive the number of events and, in fact, as a sole measure, saturation jeopardizes data quality, see “Designing a Quality In-depth Interview Study: How Many Interviews Are Enough?”
The focus group method has been discussed in RDR over the years, such as this article on mode differences, and this article (actually, slide show) on applying the Total Quality Framework to focus groups, and a discussion on the use of projective techniques, as well as an article on the many considerations in the design and implementation of the focus group method.