# Fixed- versus random-effects models in meta-analysis: model properties and an empirical comparison of differences in results.

@article{Schmidt2009FixedVR, title={Fixed- versus random-effects models in meta-analysis: model properties and an empirical comparison of differences in results.}, author={F. Schmidt and In-Sue Oh and T. Hayes}, journal={The British journal of mathematical and statistical psychology}, year={2009}, volume={62 Pt 1}, pages={ 97-128 } }

Today most conclusions about cumulative knowledge in psychology are based on meta-analysis. We first present an examination of the important statistical differences between fixed-effects (FE) and random-effects (RE) models in meta-analysis and between two different RE procedures, due to Hedges and Vevea, and to Hunter and Schmidt. The implications of these differences for the appropriate interpretation of published meta-analyses are explored by applying the two RE procedures to 68 meta-analyses… Expand

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#### References

SHOWING 1-10 OF 67 REFERENCES

Fixed Effects vs. Random Effects Meta‐Analysis Models: Implications for Cumulative Research Knowledge

- Mathematics
- 2000

Is the meta-analysis of correlation coefficients accurate when population correlations vary?

- Mathematics, Medicine
- Psychological methods
- 2005

Meta-analysis of correlation coefficients: a Monte Carlo comparison of fixed- and random-effects methods.

- Mathematics, Medicine
- Psychological methods
- 2001

Comparison of two random-effects methods of meta-analysis.

- Psychology, Medicine
- The Journal of applied psychology
- 2002

The power of statistical tests in meta-analysis.

- Mathematics, Medicine
- Psychological methods
- 2001

Combining effect size estimates in meta-analysis with repeated measures and independent-groups designs.

- Medicine
- Psychological methods
- 2002