Meta-analysis is a statistical method that combines the results of multiple studies to provide a more accurate and reliable estimate of the true effect of a phenomenon. By pooling data from multiple studies, meta-analysis can increase the sample size and reduce the sampling error. This allows for a greater ability to generalize the findings to other populations.
In addition, meta-analysis also allows for the examination of subgroups within the sample. This means that researchers can examine differences in participant characteristics, such as age, gender, and ethnicity, and see how these factors may affect the results. By identifying these subgroups, researchers can better understand the factors that contribute to the variability in the results and increase the generalizability of the findings.
In conclusion, meta-analysis is a powerful tool that can help to increase the generalizability of findings in psychology research. By pooling data from multiple studies and examining subgroups within the sample, meta-analysis can increase the sample size and reduce the sampling error, and provide more precise estimates of population parameters.
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