qualitative methods

Focus Groups: Heterogeneity vs. Homogeneity

The following is a modified excerpt from Applied Qualitative Research Design: A Total Quality Framework Approach (Roller & Lavrakas, 2015, pp. 107-109).

Heterogeneity

homogeneity

Fundamental to the design of a focus group study is group composition. Specifically, the researcher must determine the degree of homogeneity or heterogeneity that should be represented by the group participants. As shown below, there are many questions the researcher needs to contemplate, such as the extent of similarity or dissimilarity in participants’ demographic characteristics, as well as in their experiences and involvement with the subject matter.

Questions When Considering Heterogeneity vs. Homogeneity
A few of the questions the focus group researcher might consider when determining the desired heterogeneity or homogeneity among group participants include:

  • Should participants be in the same age range and/or stage of life?
  • Should participants be the same gender, race, and/or ethnicity?
  • Should participants be at a similar income, socio-economic, or educational level?
  • Should participants reside in the same community, be members of the same organization(s)?
  • Should participants have similar professions or jobs (including, job titles)?
  • Should participants have a similar involvement, experience, or knowledge with the research topic, e.g., the same types of problems with their 13 year old boys? the same healthcare service provider? the same purchase behavior? the same level of expertise with a new technology?

Whether or not—or the degree to which—group participants should be homogeneous in some or all characteristics has been at the center of debate for some years. On the one hand, Grønkjær, Curtis, Crespigny, and Delmar (2011) claim that at least some “homogeneity in focus group construction is considered essential for group interaction and dynamics” (p. 23)—for example, participants belonging to the same age group may have similar frames of reference and feel comfortable sharing their thoughts with people who have lived through the same experience. In the same vein, Read Full Text

Qualitative Design & Methods: 14 Selected Articles from 2019

Research Design Review is a blog first published in November 2009. RDR currently consists of more than 220 articles and has 650+ subscribers along Qualitative Research: Design & Methodswith nearly 780,000 views. As in recent years, many of the articles published in 2019 centered on qualitative research. This paper — “Qualitative Research: Design & Methods” — represents a compilation of 14 of these articles pertaining to qualitative research design (4 articles) and various methods (10 articles).

The articles on qualitative research design touch on basic yet important considerations when choosing a qualitative approach; specifically, the critical thinking skills required of the researcher to integrate quality principles in the research design, effectively derive meaning from the human experience, and understand the important role of reflexivity. The 10 articles on research methods covers focus group discussions (e.g., building rapport, the asynchronous mode), in-depth interviews (e.g., strengths and limitations, mitigating interviewer bias), case-centered and narrative research (e.g., a case study exploring communication with educators among working-class Latino parents in urban Los Angeles), and an ethnographic case study.

Case-Centered Research in Education: Bridging the Cultural Divide

The following is a modified excerpt from Applied Qualitative Research Design: A Total Quality Framework Approach (Roller & Lavrakas, 2015, pp. 329-331). This excerpt discusses a case study illustrating how the author utilized many Total Quality Framework (TQF) design considerations, e.g., disclosure of the sampling method, a discussion of researcher bias, and processing plus verification procedures, that ultimately led to useful outcomes.

Bridging the cultural divideMultiple methods and case-centered qualitative research is the subject of other articles in Research Design Review – see “Multi-method & Case-centered Research: When the Whole is Greater Than the Sum of its Parts.” Multiple methods, of course, refers to combining two or more qualitative methods to investigate a research question. Case-centered research is

A term coined by Mishler (1996, 1999) to denote a research approach that preserves the “unity and coherence” of research subjects throughout data collection and analysis. It consists of two fundamental and unique components: (a) a focus on the investigation of “complex” social units or entities (also known as “case[s]”) in their entirety (i.e., not just one aspect captured at one moment in time), and (b) an emphasis on maintaining the cohesiveness of this entity throughout the research process. Two prominent case-centered approaches are case study research and narrative research. (Roller & Lavrakas, 2015, p. 350).

The following case study is from Auerbach (2002) who used multiple methods within a case-centered narrative study design to explore schooling and communication with educators among working-class Latino parents in urban Los Angeles. This case is discussed around the four components of the TQF – Credibility, Analyzability, Transparency, and Usefulness.

Purpose

The purpose of this research was to explore the problems that Latino parents in urban Los Angeles face related to the schooling of their children and communication with educators. More specifically, this research utilized one particular college-access program for high school students to investigate the use of storytelling among a marginalized group of working-class Latino parents to examine whether “listening to the stories of parents of color may help urban educators and policy makers bridge the divide between students’ home cultures and the culture of school” (p. 1370).

Method

A case-centered approach is a popular form of qualitative research among educational researchers. Stake (1995), Qi (2009), Bennett et al. (2012), Clandinin and Connelly (1998; Connelly & Clandinin, 1990), and Randall (2012) are just a few of the researchers who have applied either case study or narrative research to issues in education. The study presented here is another example of case-centered research in an educational setting. This was a fitting approach, given the researcher’s access to and involvement with the “Futures Project”—a longitudinal study conducted in conjunction with
an experimental college-access program for high school students—which fostered a case-centered study design relying on multiple methods within a narrative framework.

DESIGN

Credibility
Scope
The target population for this study was parents of high school students participating in the Futures Project. This project was conducted in partnership with UCLA to trace the trajectories of 30 students who participated in an experimental college-access program. The researcher used Read Full Text