Sampling is central to the practice of qualitative methods, but compared with data collection and analysis its processes have been discussed relatively little. A four-point approach to sampling in qualitative interview-based research is presented and critically discussed in this article, which integrates theory and process for the following: (1) defining a sample universe, by way of specifying inclusion and exclusion criteria for potential participation; (2) deciding upon a sample size, through the conjoint consideration of epistemological and practical concerns; (3) selecting a sampling strategy, such as random sampling, convenience sampling, stratified sampling, cell sampling, quota sampling or a single-case selection strategy; and (4) sample sourcing, which includes matters of advertising, incentivising, avoidance of bias, and ethical concerns pertaining to informed consent. The extent to which these four concerns are met and made explicit in a qualitative study has implications for its coherence, tran...

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Sampling in Interview-Based Qualitative Research: A Theoretical and Practical Guide

Additive manufacturing and sustainability: an exploratory study of the advantages and challenges

Case study is one of the most frequently used qualitative research methodologies. However, it still does not have a legitimate status as a social science research strategy because it does not have well-defined and well-structured protocols (Yin, 2002), so emerging researchers who plan to utilize case study usually become confused "as to what a case study is and how it can be differentiated from other types of qualitative research" (Merriam, 1998, p. xi). Research methodologists do not have a consensus on the design and implementation of case study, which makes it a contested terrain and hampers its full evolution. In this paper, I aim to provide an analysis and synthesis of the differing perspectives which are held by three prominent methodologists, namely Robert K. Yin, Sharan Merriam, and Robert E. Stake, on the utilization of case study method in the field of educational research. I will zero in on the ensuing works: Robert K. Yin's Case Study Research: Design and Methods (2002), Sharan B. Merriam's Qualitative Research and Case Study Applications in Education (1998), and Robert E. Stake's The Art of Case Study Research (1995). I selected these three methodologists and their particular books for the following reasons. First, Yin, Merriam and Stake are the three seminal authors who provide procedures to follow when conducting case study research (Creswell, Hanson, Plano, & Morales, 2007) which aid educational researchers to construct a roadmap in their utilization of case study. They are seen as three foundational methodologists in the area of case study research whose methodological suggestions largely impact educational researchers' decisions concerning case study design. Second, previous work on case study detailed the design (Baxter & Jack, 2008), introduction (Tellis, 1997a), and application of case study methodology (Tellis, 1997b) for broader audience of novice qualitative researchers. I believe this paper would be most beneficial and fruitful by exposing novice researchers to a spectrum of different views and conceptualizations of case study that are provided by prominent research methodologists from differing vantage points. This exposure would help them construct or position their own understanding in this spectrum so that they can conduct their research with a dependable and defensible design. Therefore, I present each one of the three distinctive stances on the knotty design issues in case study methodology through points of divergence, convergence, and complementarity. Finally, I opted to concentrate on their particular books for the juxtaposition in this paper, because in these seminal volumes they conscientiously expound upon case study research in its entirety by providing valuable insights into its every step from how it is being conceptualized to how it is communicated to the readers. Thus, the readers of the current paper will have a synthesis and analysis of three complete guides to case study methods, from which they can select the tools that are most appropriate and functional for their own research purposes. In this paper, I endeavor to scrutinize the areas where these three perspectives diverge, converge and complement one another in varying dimensions of case study research. I am going to follow six categorical dimensions which the three scholars mostly converge upon in their seminal texts on case study method: Epistemological Commitments, Defining Case and Case Study, Designing Case Study, Gathering Data, Analyzing Data, and Validating Data. Researcher's Position Prior to moving on to present a comparison of three case study perspectives, I believe readers need to know my identity as a researcher, my investment in this topic, and my intentions in this project. I just completed my doctoral degree in the field of applied linguistics with a dissertation focusing on English as a second language (ESL) teacher candidates' professional identity development. …

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Three Approaches to Case Study Methods in Education: Yin, Merriam, and Stake

Recent developments in marketing and service research highlight the blurring of boundaries between firms and customers. The concept of customer engagement (CE) aggregates the multiple ways customer...

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The Role of Customer Engagement Behavior in Value Co-Creation A Service System Perspective

This article is intended as a contribution to the ongoing conceptual development of Sustainability-Oriented Innovation (SOI) and provides initial guidance on becoming and being sustainable. We organize and integrate the diverse body of empirical literature relating to SOI and, in doing so, develop a synthesized conceptual framework onto which SOI practices and processes can be mapped. SOI involves making intentional changes to an organization’s philosophy and values, as well as to its products, processes or practices to serve the specific purpose of creating and realising social and environmental value in addition to economic returns. A critical reading of previous literature relating to environmental management and sustainability reveals how little attention has been paid to SOI and what exists is only partial. In a review of 100 scholarly articles and 27 grey sources drawn from the period of the three Earth Summits (1992, 2002 and 2012), we address four specific deficiencies that have given rise to these limitations: the meaning of SOI, how it has been conceptualised, its treatment as a dichotomous phenomenon and a general failure to reflect more contemporary practices. We adopt a framework synthesis approach involving first constructing an initial architecture of the landscape grounded in previous studies which is subsequently iteratively tested, shaped, refined and reinforced into a model of SOI with data drawn from included studies: so advancing theoretical development in the field of SOI.

Sustainability‐oriented Innovation: A Systematic Review

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Case Study Research Design And Methods