The Book Reports a Study by Kazdin Where Youth Were

The book reports a study by Kazdin where youth were designated as depressed or non depressed using three methods (DSM interview, parent CDI or child CDI) . On the self report CDI, how did the depressed and non-depressed groups differ?

A) The depressed group was more hopeless.
B) The non depressed group had lower self esteem.
C) The depressed group made external attributions about negative events.
D) The non depressed group believed that change was controlled by external factors rather than themselves.