What question did this study set out to answer?

To examine sample size requirements for pilot studies focused on preliminary instrument design and provide clear participant-number recommendations for initial scale development.

December 18, 2009Educational and Psychological Measurement

Initial Scale Development: Sample Size for Pilot Studies

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Authors

GJGeorge A. JohansonNorthwest Missouri State University GBGordon P. BrooksOhio Department of Education

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Implication

Methodological analysis reveals optimal sample size guidelines for pilot studies in instrument design, highlighting parameters like item discrimination and consistency.

Key Points

To examine sample size requirements for pilot studies focused on preliminary instrument design and provide clear participant-number recommendations for initial scale development.
Analyzed sample size determination from the framework of early-stage psychometric scale and instrument development.
Evaluated critical scale performance metrics including item difficulty, item discrimination, response rates, internal consistency, and parameter estimation stability.
Identified a substantial gap in the existing methodological literature concerning explicit sample size benchmarks for scale-development pilot work.
Formulated concrete sample size recommendations tailored to help investigators achieve reliable parameter estimation and item performance screening during initial testing.

Cite This Study

Johanson et al. (2009) studied this question.

synapsesocial.com/papers/69dea4a540ea065679558e46 https://doi.org/10.1177/0013164409355692

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Implication

Methodological analysis reveals optimal sample size guidelines for pilot studies in instrument design, highlighting parameters like item discrimination and consistency.

Initial Scale Development: Sample Size for Pilot Studies

Discussion

Member takes

Implication

Key Points

Cite This Study

Initial Scale Development: Sample Size for Pilot Studies

Discussion

Member takes

Implication

Key Points

Cite This Study

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