Which fractions are equivalent to 2/4 choose all the correct answers. 6/8

4/6

6/12

4/8

5/7

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above