Cronbach’s Alpha Rule of Thumb

To examine reliability and internal consistency Cronbach’s alpha tests were conducted using the survey subscales: communication, organizational commitment, organizational justice, organizational citizenship, affect based trust, cognition based trust and resistance to change. George and Mallery (2003) suggest the following rules of thumb for evaluating alpha coefficients, “> .9 excellent, > .8 good, > .7 acceptable, > .6 questionable, > .5 poor, < .5 unacceptable.” The measure (alpha or α) assumes that items measuring the same thing will be highly correlated (Welch & Comer, 1988). Click here for dissertation statistics help