Proposal for a reliability estimator using Alfa-Game

Propuesta de estimador de la fiabilidad mediante Alfa-Game

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José González
Juan Aspeé
Abstract

Generally when the Cronbach Alpha coefficient is higher than 0.7, it is indicated by consensus that the test is reliable, however, it is a criterion that assumes proximity with the maximum value for reliability, without using objective evidence for this decision. Thus, the preliminary statistics that support the procedure are presented, then a simulated application of the proposed coefficient was made to 30 cases considering a scale of 5 response categories. Therefore, the use of the Alpha Game Coefficient is proposed, which generates a p-value that indicates how significantly the Alpha Cronbach coefficient is or not away from 1, replacing consensus in the scientific community. With this, it is possible to use the expression of significance added to the Cronbach's Alpha coefficient, which is especially useful in adverse situations for Cronbach's Alpha that tend to confuse non-statistical experts.

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