The scale on a map is 2 inches = 20 miles. If the distance between David's house and his grandmother's house is 5 inches on the map, how far is David's house from his grandmother's house?

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