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Quality & Quantity

, Volume 41, Issue 1, pp 105–121 | Cite as

A Call for Qualitative Power Analyses

  • Anthony J. Onwuegbuzie
  • Nancy L. Leech
Article

Abstract

The purpose of this paper is to emphasize the importance of sampling and sample size considerations in all qualitative research. Such considerations would help qualitative researchers to select sample sizes and sampling designs that are most compatible with their research purposes. First, we discuss the importance of sampling in qualitative research. Next, we outline 24 designs for selecting a sample in qualitative research. We then discuss the importance of selecting a sample size that yields data that have a realistic chance of reaching data saturation, theoretical saturation, or informational redundancy. Based on the literature, we then provide sample size guidelines for several qualitative research designs. As such, we provide a framework for making sampling and sample size considerations in interpretive research.

Keywords

Focus Group Qualitative Research Qualitative Researcher Purposeful Sampling Theoretical Saturation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Charmaz, K. 2000Grounded theory: objectivist and constructivist methodsDenzin, N.K.Lincoln, Y.S. eds. Handbook of qualitative research2SageThousand Oaks, CA5095535Google Scholar
  2. Connolly, P. 1998‘Dancing to the wrong tune’: ethnography generalization and research on racism in schoolsConnolly, P.Troyna, B. eds. Researching Racism in Education: Politics, Theory, and PracticeOpen University PressBuckingham, UK122139Google Scholar
  3. Constas, M.A. 1992Qualitative data analysis as a public event: the documentation of category development proceduresAmerican Educational Research Journal29253266CrossRefGoogle Scholar
  4. Crowley, E.P. 1994/1995Using qualitative methods in special education researchExceptionality55570CrossRefGoogle Scholar
  5. Creswell, J.W. 1998Qualitative Inquiry and Research Design: Choosing Among Five TraditionsSageThousand Oaks, CAGoogle Scholar
  6. Creswell, J.W. 2002Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative ResearchPearson EducationUpper Saddle River, NJGoogle Scholar
  7. Denzin, N.K., Lincoln, Y.S. 2000The discipline and practice of qualitative researchDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative Research2SageThousand Oaks, CA128Google Scholar
  8. Donmoyer, R. 1990Generalizability and the single-case studyEisner, E.W.Peshkin, A. eds. Qualitative Inquiry in Education: The Continuing DebateTeachers College PressNew York175200Google Scholar
  9. Flick, U. 1998An Introduction to Qualitative Research: Theory, Method and ApplicationsSageLondonGoogle Scholar
  10. Fontana, A., Frey, J.H. 2000The interview: from structured questions to negotiated textDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative Research2SageThousand Oaks, CA645672Google Scholar
  11. Greenwood, D.J., Levin, M. 2000Reconstructing the relationships between universities and society through action researchDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative Research2SageThousand Oaks, CA85106Google Scholar
  12. Halpern, E. S. (1983). Auditing Naturalistic Inquiries: The Development and Application of a Model. Unpublished doctoral dissertation, Indiana University.Google Scholar
  13. Johnson, B., Christensen, L. 2004Educational Research: Quantitative, Qualitative, and Mixed Approaches2Needham Heights, MAAllyn & BaconGoogle Scholar
  14. Jones, S.R. 2002Writing the word: methodological strategies and issues in qualitative researchJournal of College Student Development43461473Google Scholar
  15. Kemper, E.A., Stringfield, S., Teddlie, C. 2003Mixed methods sampling strategies in social science researchTashakkori, A.Teddlie, C. eds. Handbook of Mixed Methods in Social and Behavioral ResearchSageThousand Oaks, CA273296Google Scholar
  16. Krueger, R.A. 2000Focus Groups: A Practical Guide for Applied Research2SageThousand Oaks, CAGoogle Scholar
  17. Kuzel, A.J. 1992Sampling in qualitative inquiryCrabtree, B.F.Miller, W.L. eds. Doing qualitative research. Research Methods for Primary CareSageNewbury Park, CA3144Google Scholar
  18. Langford, B.E., Schoenfeld, G., Izzo, G. 2002Nominal grouping sessions vs. focus groupsQualitative Market Research55870CrossRefGoogle Scholar
  19. Lincoln, Y.S., Guba, E.G. 1985Naturalistic InquirySageBeverly Hills, CAGoogle Scholar
  20. Maxwell, J. A. (1995, February). Diversity and Methodology I a Changing World. Paper presented at the Fourth Puerto Rican Congress of Research in Education, San Juan, Puerto Rico.Google Scholar
  21. Maxwell, J.A. 1996Qualitative Research DesignSageNewbury Park, CAGoogle Scholar
  22. Miles, M.B., Huberman, A.M. 1984Qualitative Data Analysis: A Sourcebook of New MethodsSageBeverly Hills, CAGoogle Scholar
  23. Miles, M., Huberman, A.M. 1994Qualitative Data Analysis: An Expanded Sourcebook2SageThousand Oaks, CAGoogle Scholar
  24. Morgan, D. L. (1997). Focus Groups as Qualitative Research. 2nd ed., Qualitative Research Methods Series 16. Thousand Oaks, CA: Sage.Google Scholar
  25. Morse, J.M. 1994Designing funded qualitative researchDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative ResearchSageThousand Oaks, CA220235Google Scholar
  26. Morse, J.M. 1995The significance of saturationQualitative Health Research5147149Google Scholar
  27. Onwuegbuzie, A.J. 2003Effect sizes in qualitative research: a prolegomenonQuality & Quantity: International Journal of Methodology37393409CrossRefGoogle Scholar
  28. Onwuegbuzie, A. J. & Daniel, L. G. (2003, February 12). Typology of analytical and interpretational errors in quantitative and qualitative educational research. Current Issues in Education [On-line], 6(2). Available: http://cie.ed.asu.edu/volume6/number2/.
  29. Onwuegbuzie, A.J., Jiao, Q.G., Bostick, S.L. 2004Library Anxiety: Theory, Research, and ApplicationsScarecrow PressLanham, MDGoogle Scholar
  30. Onwuegbuzie, A. J. & Leech, N. L. (2005, March). Generalization Practices in Qualitative Research: Trends in the Literature. Paper presented at the annual meeting of the Eastern Educational Research Association, Sarasota, FL.Google Scholar
  31. Onwuegbuzie, A.J., Leech, N.L. 2005Taking the “Q” out of research: teaching research methodology courses without the divide between quantitative and qualitative paradigmsQuality & Quantity: International Journal of Methodology39267296CrossRefGoogle Scholar
  32. Patton, M.Q. 1990Qualitative Research and Evaluation Methods2SageNewbury Park, CAGoogle Scholar
  33. Pelto, P., Pelto, G. 1975Intracultural diversity: some theoretical issuesAmerican Ethnologist2118CrossRefGoogle Scholar
  34. Poggie, J.J.,Jr. 1972Toward control in key informant dataHuman Organizational312330Google Scholar
  35. Sandelowski, M. 1995Focus on qualitative methods: sample sizes in qualitative researchResearch in Nursing & Health18179183Google Scholar
  36. Sandelowski, M., Barroso, J. 2003aCreating metasummaries of qualitative findingsNursing Research52226233CrossRefGoogle Scholar
  37. Sandelowski, M., Barroso, J. 2003bClassifying the findings in qualitative studiesQualitative Health Research13905923CrossRefGoogle Scholar
  38. Sankoff, G. 1971Quantitative aspects of sharing and variability in a cognitive modelEthnology10389408Google Scholar
  39. Schwandt, T.A. 2000Three epistemological stances for qualitative inquiryDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative Research2SageThousand Oaks, CA189213Google Scholar
  40. Stake, R.E. 2000Case studiesDenzin, N.K.Lincoln, Y.S. eds. Handbook of Qualitative Research2SageThousand Oaks, CA435454Google Scholar
  41. Strauss, A., Corbin, J. 1990Basics of Qualitative Research: Grounded Theory Procedures and TechniquesSageNewbury Park, CAGoogle Scholar
  42. The American Heritage College dictionary, 3rd ed. (1993). Boston, MA: Houghton Mifflin.Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  1. 1.Department of Educational Measurement and Research, College of EducationUniversity of South FloridaTampaUSA
  2. 2.University of Colorado at Denver and Health Sciences CenterUSA

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