Meta-analysis is a statistical technique used to combine and analyze the results of multiple independent studies on a particular topic. It allows researchers to draw more generalizable conclusions by pooling data from a number of studies to provide a more comprehensive understanding of a research question. Meta-analysis can provide more precise estimates of effect sizes, identify sources of variability, and help to resolve discrepancies or conflicting findings in the literature. It is commonly used in fields such as medicine, psychology, education, and social sciences to synthesize the findings of multiple studies and provide a more robust and reliable evidence base for decision making.