Difference between revisions of "Internal Validity"

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Latest revision as of 15:52, 17 September 2015

Definition

English

Internal Validity

Internal validity is related to make sure that if a relationship is observed between the treatment and the outcome, it is a causal relationship, and that it is not a result of a factor of which there is no control or no measurement, i.e., the treatment causes the outcome (effect). Threats to internal validity are influences that can affect the independent variable with respect to causality, without the research's knowledge.

Portuguese

Validade Interna

Os riscos à validade interna estão relacionados com influências casuais que podem ocorem nas variáveis independentes, sem a ciência do pesquisador, causando risco de uma possível conclusão sobre um relacionamento entre o tratamento e o resultado.

Spanish

Validez Interna

La validez interna se relaciona con asegurarse de que si una relación es observada entre un tratamiento y un resultado, entonces es una relación causal y no el resultado de un factor de cuál no hay control o no hay medidas, es decir, el tratamiento causa el resultado (efecto). Las amenazas a la validez interna son las influencias que pueden afectar a la variable independiente con respecto a la causalidad, sin el conocimiento del investigador.

Reference

  • (WOHLIN et al, 2000).