Final answer:
Meta-analysis uses a statistical approach to combine study results, aiming to increase validity when they diverge, providing a more reliable estimate of overall effects.
Step-by-step explanation:
Meta-analysis uses a statistical approach to combine the results from multiple studies in an effort to increase validity when reports or studies disagree. This technique evaluates the aggregate evidence from all relevant studies on a topic to derive a more precise estimate of the overall effect or outcome. Such analyses take into account the variability among different studies, aiming to resolve discrepancies through a formal, quantitative synthesis of the data.
Research suggests the importance of methodologically diverse studies to reduce health disparities by including a broad range of cultural and socioeconomic factors. In the context of social studies, this can require varying methodological approaches like mixed-methods, community-based participatory action research, and longitudinal data collection. Meta-analysis in itself is recognized as a powerful tool to address complex, multi-factorial issues in health research and beyond.