SELF-RATING SCALE
The Zung questionnaire is a useful complement in the diagnosis of depression; it is in no way a substitute for an interview with a therapist or doctor.

	A little of the time	Some of the time	Good part of the time	Most of the time
1. I feel down-hearted and blue
2. Morning is when I feel the best
3. I have crying spells or feel like it
4. I have trouble sleeping at night
5. I eat as much as I used to
6. I still enjoy sex
7. I notice that I am losing weight
8. I have trouble with constipation
9. My heart beats faster than usual
10. I get tired for no reason
11. My mind is as clear as it used to be
12. I find it easy to do the things I used to
13. I am restless and can't keep still
14. I feel hopeful about the future
15. I am more irritable than usual
16. I find it easy to make decisions
17. I feel that I am useful and needed
18. My life is pretty full
19. I feel that others would be better off if I were dead
20. I still enjoy the things I used to do