Ralf Schwarzer: Computer Programs for Meta-Analysis
Several meta-analytic methods have become popular in recent years, but many
researchers have been reluctant to adopt them because no convenient microcomputer
program was available. In the meantime, a comprehensive software package has been
developed that solves most of the problems encountered in meta-analytic research.
Three approaches can be selected:
For the two effect size methods, a cluster analysis option is also
available. The program can be used to plot a stem-and-leaf display of
correlation coefficients. A utility menu is provided that allows various
transformations and preliminary computations that are typically required before the final
meta-analysis can be performed. Those researchers who are not interested in meta-analysis,
but who look for a convenient tool to compute t tests, significance of correlations, or
weighting of means, variances and correlations, will also benefit from this program.
- the analysis of exact probabilities (p values) as suggested by Rosenthal,
- the analysis of effect sizes d, following the methods of either Glass or
of Hedges and Olkin, and
- the analysis of effect sizes r as recommended by Hunter, Schmidt,
The software is designed for IBM or compatible computers (DOS greater 3.3). Menu-driven with
pull-down menues, it includes a data editor and supports an EGA monitor. The software is
free of charge.
Download the program and the manual by clicking on the icons.