The test may be used for youth aged 6–16. As Flanagan and allen (2005) noted, internal consistency reliability For a sample of 1604 youth, are 0.95 for the total scale, and 0.85–0.86 for each of the four subscales, which are impressive values. Test–retest reliability is 0.75 for the total scale, and ranging from 0.65 to 0.75 for the subscales.