Validación de un cuestionario de razonamiento probabilistico condicional
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Abstract
La utilidad del razonamiento probabilístico condicional en psicología y educación se
deriva de su aplicación al diagnóstico, evaluación, toma de decisiones e inferencia. En este
trabajo describimos la validación de un cuestionario destinado a evaluar este razonamiento. A
partir de las respuestas de una muestra de 591 sujetos se analizan la consistencia interna y
estructura factorial, que sugiere un constructo subyacente, interpretado como conocimiento
formal sobre probabilidad condicional y no relacionado con los sesgos de razonamiento
descritos en la literatura. La fiabilidad test- restest es estimada en una segunda muestra de 102
participantes. El análisis discriminante de puntuaciones en dos grupos de alumnos con y sin
instrucción (n=298 y n=177) indica la validez de criterio del cuestionario.
Conditional probabilistic reasoning is useful in psychology and education due to its applications to diagnose, assessment, decision making and inference. We describe the validation of a questionnaire directed to assess this type of reasoning. We analyze the questionnaire internal consistency and the factor structure in a sample of 591 participants. Results suggest an underlying construct, that we interpret as formal knowledge on conditional probability, and which is unrelated to the reasoning biases described in the literature. The testretest reliability is estimated from a sub-sample (n= 102). Discriminant analysis of scores in two groups of students with and without instruction (n=298 and n=177) indicates criteria validity for the questionnaire.
Conditional probabilistic reasoning is useful in psychology and education due to its applications to diagnose, assessment, decision making and inference. We describe the validation of a questionnaire directed to assess this type of reasoning. We analyze the questionnaire internal consistency and the factor structure in a sample of 591 participants. Results suggest an underlying construct, that we interpret as formal knowledge on conditional probability, and which is unrelated to the reasoning biases described in the literature. The testretest reliability is estimated from a sub-sample (n= 102). Discriminant analysis of scores in two groups of students with and without instruction (n=298 and n=177) indicates criteria validity for the questionnaire.
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Bibliographic citation
María Carmen Díaz Batanero. Validación de un cuestionario de razonamiento probabilístico condicional. REMA, ISSN-e 1135-6855, Vol. 12, Nº. 1, 2007, págs. 1-15.














