 Test data also reflects that the test is sensitive to changes over time in depressive symptoms.There are main effects in the constructs of 'Interpersonal Problems', 'Ineffectiveness', and 'Anhedonia' between boys and girls.Girls scored higher than boys on these constructs, based on Kovacs' studies performed on the CDI as of 1992, reflecting that girls had a tendency for having greater distress in these areas.