The reliability of an instrument or questionnaire is concerned with the
consistency, stability, and dependability of the scores (McMillan, 2007). For this reason, the internal
consistency was tested using Cronbach’s alpha for each competency in SPSS. If the alpha value is higher
than 0.9, the internal consistency is excellent, and if it is at least higher than 0.7, the internal consistency
is acceptable (Blunch, 2008). Excellent internal consistency means that the survey items tend to pull
together. In other words, a participant who answers a survey item positively is more likely to answer other
items in the survey positively (Blunch, 2008).