Abstract
A method of sample-size determination for use in attempts to replicate experiments is described. It is appropriate in situations where there is uncertainty about the magnitude of the effect under investigation. The procedure uses information supplied by the original experiment to establish a distribution of probable effect sizes. The sample size to be used in a replication study is that which provides an expected power of the desired amount over the distribution of probable effect sizes A FORTRAN 77 program is presented that permits rapid calculation of sample size in replication attempts employing comparisons of means, correlation coefficients, or proportions.
Article PDF
References
Cohen, J. (1988).Statistical power analysis for the behavioral sciences (2nd ed.). New York: Academic Press.
Gillett, R. (1986). Sample size determination in replication attempts: The standard normalz test.British Journal of Mathematical & Statistical Psychology,39, 190–207.
Lykken, D. (1968). Statistical significance in psychological research.Psychological Bulletin,70, 151–159.
Rosenthal, R. (1979). Replications and their relative utilities.Replications in Social Psychology,1, 15–23.
Tversky, A., &Kahneman, D. (1971). Belief in the law of small numbers.Psychological Bulletin,76, 105–110.
Author information
Authors and Affiliations
Additional information
An erratum to this article is available at http://dx.doi.org/10.3758/BF03209995.
Rights and permissions
About this article
Cite this article
Gillett, R. A FORTRAN 77 program for sample-size determination in replication attempts when effect size is uncertain. Behavior Research Methods, Instruments, & Computers 23, 442–446 (1991). https://doi.org/10.3758/BF03203409
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.3758/BF03203409