Cronbach’s Alpha: What Is It and How Is It Used?

  Cronbach’s alpha is a coefficient associated with the reliability of a measurement instrument – a psychometric test – in psychology. It could be an indicator of the consistency or stability of the measurements when a measurement process is repeated (Prieto and Delgado, 2010). It’s a psychometric value that would allow us to analyze the consistency of the results when measuring the same thing in very similar conditions. The procedures most used to determine reliability, according to Hernández, Fernández, and Baptista (2014), are the following: 1. The measurement of stability (reliability by test-retest): In this procedure, the instrument is applied…