Center for Epidemological Studies - Depression
This screening test for depression is in the public domain. It has been used with children to age 8. Many studies have shown this test to be accurate at detecting depression. However, as with other tests, it should be used with clinical interviews and / or other testing to diagnose depression.
Adobe acrobat (pdf) version (printable) is here
The Spanish version of CES-D is here:
CES-D - Spanish Version
The Spanish version has been validated in Mexico from age 8 and up