Meta-analysis in psychological research

Meta-analysis is a research methodology that aims to quantitatively integrate the results of a set of empirical studies about a given topic. With this purpose, effect-size indices are obtained from the individual studies and the characteristics of the studies are coded in order to examine their relationships with the effect sizes. Statistical analysis in meta-analysis requires the weighting of each effect estimate as a function of its precision, by assuming a fixed- or a randomeffects model. This paper outlines the steps required for carrying out the statistical analyses in a meta-analysis, the different statistical models that can be assumed, and the consequences of the assumptions in interpreting their results. The statistical analyses are illustrated with a real example.

• Autores: Sánchez-Meca, Julio; Marín-Martínez, Fulgencio
• Fecha de publicación: 2010
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/6543
• Acceso en línea: http://hdl.handle.net/10819/6543
• Palabra clave: Effect size; Fixed-effects models; Meta-analysis; Mixed-effects models; Random-effects models; Meta-análisis; Modelos de efectos aleatorios; Modelos de efectos fijos; Modelos de efectos mixtos; Tamaño del efecto; Investigación cuantitativa; Análisis estadístico; Estadística; Psicología - investigaciones
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia