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 rela...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2010 |
| País: | Colombia |
| Institución: | Universidad de San Buenaventura |
| Repositorio: | Repositorio USB |
| Idioma: | español |
| OAI Identifier: | oai:bibliotecadigital.usb.edu.co:10819/6543 |
| Acceso en línea: | http://hdl.handle.net/10819/6543 |
| Access Level: | acceso abierto |
| 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 |
| Sumario: | 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. |
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