BMJ published a series of articles on doing questionnaire-based research in 2004 (first 3 links). They are short, but useful. The rest of the links are additional articles, sites, and tutorials.
Instruments can be very difficult to get!
Most instruments (surveys, scales, questionnaires, etc.) are not published openly. You may find sample questions in the text of articles about the studies, but not the full instrument. Plan for the need to request your desired instrument from the authors or publishers. Some instruments cost money to use. Even if you find the questions somewhere, be sure you have permission to use the test in research. Permission comes with details about scoring, information about strengths and weaknesses, and other important information for using a given test. (It's also ethically required to ask.)
Note: contacting authors is not as easy as it seems. One study found that the likelihood of finding a useable email address falls by 7% per year after publication. If the email address given in the article does not work, try doing a web search. Also try contacting other authors even if one author is specifically given as the 'corresponding' author.
PsycTests is the only database that contains the actual tests (along with permissions and instructions for use.)
PsycTests is mostly psychological tests (scales, questionnaires, surveys, etc.) but also covers educational, health, and sociological topics.
We have 2 databases specifically for identifying instruments and there are several similar websites. In all cases, these give you the references and information about the instruments, not the instruments themselves. Follow the citations (Find Article @ SCSU, Journal Title search, or SouthernSearch (for books)) for the articles that describe the instruments--even these articles may not have the instruments themselves.
If there is an Availability section, be sure to check for contact information.
Tips:
[topic] refers to the general subject of your study. Don't get too specific--examples: depression, smoking, attention deficit disorder, workplace safety.
Ideally, you'll find your instrument by finding a research article in your regular searching. Try one or more of these tips to improve your searches:
Once you've found an interesting article:
The majority of instruments are not published (though it is becoming more common).
Assessment Scales in Old Age Psychiatry (contains 137 instruments)
REF RC 473 .P78 B876
Chemical Dependency Counseling: A Practical Guide (contains 24 instruments)
RC 564.P47 1997
Handbook of Clinical Rating Scales and Assessment in Psychiatry and Mental Health
REF RC 473 .P78 H36 2010
Handbook of Family Measurement Techniques (contains 189 instruments)
REF HQ 728 .H267 2001 (vol. 3)
Handbook of Geriatric Assessment (contains 41 instruments)
RC 953 .G35 2000
Handbook of Measurements for Marriage and Family Therapy (24 instruments)
RC 488.5.F73 1987
Handbook of Psychiatric Measures (has a CD with over 150 instruments)
REF RC 473 .P78 A46 2008
Handbook of Sexuality Related Measures
HQ 60 .H36 1998
Integrated Treatment for Dual Disorders: A Guide to Effective Practice (contains 104 instruments)
RC 564.68 .I684 2003
Measurement Tools in Patient Education (contains 85 instruments)
REF R 727.4 .M4 2003
Measures for Clinical Practice and Research
REF BF 176 .C66 2000
Rating Scales in Mental Health (contains 71 instruments)
REF RC 473.P78 S245 2003
Sourcebook of Adult Assessment Strategies (contains 75 instruments)
REF RC 473.P78 S38 1995