Research Methods in Psychology
IV. DATA ANALYSIS ISSUES
Published Online: 26 SEP 2012
Copyright © 2013 John Wiley & Sons, Inc. All rights reserved.
Handbook of Psychology, Second Edition
How to Cite
Schmidt, F. L. 2012. Meta-Analysis. Handbook of Psychology, Second Edition. 2:IV:20.
- Published Online: 26 SEP 2012
The small sample studies typical of psychological research produce seemingly contradictory results, and reliance on statistical significance tests causes study results to appear even more conflicting. Meta-analysis integrates the findings across such studies to reveal the simpler patterns of relations that underlie research literatures, thus providing a basis for theory development. Meta-analysis can correct for the distorting effects of sampling error, measurement error, and other artifacts that produce the illusion of conflicting findings. This chapter discusses these artifacts and the procedures used to correct for them. Different approaches to meta-analysis are discussed. Applications of meta-analysis in I/O psychology and other areas are discussed and evidence is presented that meta-analysis is transforming research in psychology. Meta-analysis has become almost ubiquitous. One indication of this is that, as of October 12, 2011, Google listed more than 9 million entries for meta-analysis.
- research synthesis;
- data analysis;
- cumulative knowledge;
- psychological theory