Initial scale development: Sample size for pilot studies

Educational and Psychological Measurement

Volumn 70, Issue 3, 2010, Pages 394-400

  Johanson, George A ^a   Brooks, Gordon P ^a  

^a OHIO UNIVERSITY   (United States)

Author keywords

Instrument development; Pilot study; Sample size

Indexed keywords

EID: 77954026408     PISSN: 00131644     EISSN: 15523888     Source Type: Journal    
DOI: 10.1177/0013164409355692     Document Type: Article

References (14)

1. Crocker, L., & Algina, J. (1986). Classical and modern test theory. New York: Holt, Rinehart & Winston.
2. Duhachek, A., & Iacobucci, D. (2004). Alpha's standard error (ASE): An accurate and precise confidence interval estimate. Journal of Applied Psychology, 89, 792-808.
3. Fan, X., & Thompson, B. (2001). Confidence intervals about score reliability coefficients, please: An EPM guidelines editorial. Educational and Psychological Measurement, 61, 517-531.
4. Feldt, L.S., Woodruff, D.J., & Salih, F.A. (1987). Statistical inference for coefficient alpha. Applied Psychological Measurement, 11, 93-103.
5. Hedges, L.V., & Vevea, J.L. (1996). Estimating effect size under publication bias: Small sample properties and robustness of a random effects selection model. Journal of Educational and Behavioral Statistics, 21, 299-332.
6. Hertzog, M.A. (2008). Considerations in determining sample size for pilot studies. Research in Nursing & Health, 31, 180-191.
7. Hill, R. (1998). What sample size is enough in internet survey research? Interpersonal Computing and Technology: An Electronic Journal for the 21st Century, 6(3-4). Retrieved July 12, 2008, from http://www.emoderators.com/ipct-j/1998/n3-4/hill.html.
8. Isaac, S., & Michael, W.B. (1995). Handbook in research and evaluation. San Diego, CA: Educational and Industrial Testing Services.
9. Julious, S.A. (2005). Sample size of 12 per group rule of thumb for a pilot study. Pharmaceutical Statistics, 4, 287-291.
10. Light, R.J., Singer, J.D., & Willett, J.B. (1990). By design: Planning research on higher education. Cambridge, MA: Harvard University Press.
11. Lowry, R. (2008). VassarStats: Website for statistical calculation. Retrieved July 12, 2008, from http://faculty.vassar.edu/lowry/rho.html.
12. Mooney, C.Z., & Duval, R.D. (1993). Bootstrapping: A nonparametric approach to statistical inference. Newbury Park, CA: Sage.
13. Treece, E.W., & Treece, J.W. (1982). Elements of research in nursing (3rd ed.). St. Louis, MO: Mosby.
14. van Belle, G. (2002). Statistical rules of thumb. New York: John Wiley.