This page highlights resources on psychiatric and psychological tests, as well as for information on test validity, usage, etc. NOTE: Many tests are copyrighted and, to be used, must be purchased through a test instrument publisher.
Adult ADHD Self-Report Scale (ASRS-v1.1)
Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS)
CRAFFT Screening Tool for Adolescent Substance Use website
Edinburgh Postnatal Depression Scale
Fagerstrom Test for Nicotine Dependence
Hamilton Rating Scale for Depression (HAM-D)
Liebowitz Social Anxiety Scale
Patient Health Questionnaire (PHQ-9) 
PCL-C PTSD Checklist and Scoring
Quick Inventory of Depressive Symptoms - Self Report (QIDS-SR)
Screen for Child Anxiety Related Disorders (SCARED)
Vanderbilt Assessment Scale for ADHD
Yale-Brown Obsessive Compulsive Scale (Y-BOCS) with Symptom Checklist
Young Mania Rating Scale (YMRS)
Health and Psychosocial Instruments (HaPI) designed to index information on testing instruments published in journal articles and selected books. Coverage is from 1985 to present, with selective coverage of earlier materials. Topical areas include psychology, psychiatry, and a variety of other health related fields.
PsycINFO contains a wealth of information on testing instruments published in journal articles and selected books. Coverage is from 1806 to present. Topical areas include psychology, psychiatry, and a variety of other health related fields.
ERIC – Education Resources Information Center - for Educational psychology and tests and measurements - Try limiting your search to document type Tests/Questionnaires