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5 - Sampling: The Selection of Cases for Culturally Comparative Psychological Research
- Edited by David Matsumoto, San Francisco State University, Fons J. R. van de Vijver, Universiteit van Tilburg, The Netherlands
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- Book:
- Cross-Cultural Research Methods in Psychology
- Published online:
- 05 June 2012
- Print publication:
- 11 October 2010, pp 101-129
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- Chapter
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Summary
Introduction
Sampling is at the core of data collection, and a plethora of techniques and procedures have been described in the literature. Opinion polls and social science surveying are at the forefront of research and practical applications in this context. Despite a multitude of handbook articles (e.g., Schuman & Kalton, 1985) and – much rarer – textbook chapters (Häder & Gabler, 2003), the lege artis sampling of participants for psychological research remains a neglected topic. Among psychologists, commonsense convictions about the importance of the sampling topic range from implicitly declaring the question irrelevant for the discipline to accepting as sound science only studies that employ a rigid probability sampling approach.
Adherents to the first conviction base their view on the belief that all human beings are members of one and only one population. They argue that one simply needs to pick any member of this population and by default will have a “good” sample. This view is supported by work on measurement and factorial invariance (Meredith, 1964, 1993). Especially in the context of cross-cultural research, the Meredith selection theorem is used to argue that issues of sampling can be treated with lower priority because of the invariance of the underlying indicator-to-construct relations that exist under mild conditions on the selection procedure (Selig, Card, & Little, 2007). At the same time, there is a pragmatic component to the argument: Because the population consists of all human beings, it is practically impossible to create a complete sampling frame and draw a random sample without auxiliary information. Today most experimental general psychology and some experimental social psychology research take a convenience sampling approach, without, however, explicitly saying so (Howitt & Cramer, 2005; Owusu-Bempah & Howitt, 2000).