Gridsampler – A Simulation Tool to Determine the Required Sample Size for Repertory Grid Studies

  • Heckmann M
  • Burk L
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Abstract

The repertory grid is a psychological data collection technique that is used to elicit qualitative data in the form of attributes as well as quantitative ratings. A common approach for evaluating multiple repertory grid data is sorting the elicited bipolar attributes (so called constructs) into mutually exclusive categories by means of content analysis. An important question when planning this type of study is determining the sample size needed to a) discover all attribute categories relevant to the field and b) yield a predefined minimal number of attributes per category. For most applied researchers who collect multiple repertory grid data, programming a numeric simulation to answer these questions is not feasible. The gridsampler software facilitates determining the required sample size by providing a GUI for conducting the necessary numerical simulations. Researchers can supply a set of parameters suitable for the specific research situation, determine the required sample size, and easily explore the effects of changes in the parameter set.

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Heckmann, M., & Burk, L. (2017). Gridsampler – A Simulation Tool to Determine the Required Sample Size for Repertory Grid Studies. Journal of Open Research Software, 5(1), 2. https://doi.org/10.5334/jors.150

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