What is the purpose of a meta-analysis in psychological research?

• A. It tests a single hypothesis in isolation
• B. It synthesizes results from multiple studies to draw more robust conclusions
• C. It focuses solely on qualitative data
• D. It analyzes the statistical significance of individual studies only

Answer: (B)

The purpose of a meta-analysis in psychological research is to synthesize results from multiple studies, allowing researchers to draw more robust and generalizable conclusions. By aggregating data from various independent studies that address the same research question, a meta-analysis increases statistical power and can identify patterns or effects that may not be evident within individual studies due to smaller sample sizes or varying methodologies. This comprehensive approach helps in determining the overall effectiveness of interventions, the strength of relationships between variables, and the appropriateness of theoretical models across different contexts. Through this method, researchers can provide clearer insights into a particular phenomenon, making it a valuable tool in psychological research and practice.