These databases will help identify relevant tests and assessments in education including reviews.
HaPI - Health and Psychosocial Instruments
HaPI identifies tests and measures that have been discussed in journal articles and other sources. The majority of these are not for sale by commercial publishers. Instead, HaPI includes journal citations which may give you leads to locating the instrument itself. In some cases the test itself is included in the journal article. In other cases, only sample questions are included. Sometimes it will be necessary to contact the author of the test.
Search your keywords in the PsycInfo database, adding the words "validity" or "reliability" or both. This will find articles that describe the validity or reliability of measurement instruments on your topic. For example: anxiety and children and validity and reliability. NOTE: You can also search for keywords and then use the word "appended" in the "tests and measures" field to find articles that include the actual instrument. Just be aware that you may not find very many appended measures.
Tests and Measures in the Social Sciences: Tests Available in Compilation Volumes
A service of Helen Hough at the University of Texas, this is an index to compilations of tests available in many libraries. The site was designed as a service to locate tests, measures, instruments, etc. when there is a known title or author and a copy of the test is desired.
ETS Test Link
The Test Collection at ETS is a library of more than 25,000 tests and other measurement devices that makes information on standardized tests and research instruments available to researchers, graduate students, and teachers. Collected from the early 1900s to the present, the Test Collection at ETS is the largest such compilation in the world.
Dissertations and Theses
This is not actually a test database, but it can be useful in the search for appropriate research instruments. The database contains full text of dissertations accepted for doctoral degrees by accredited North American educational institutions and over 200 other institutions. Also contains some masters' theses. If a doctoral student developed an instrument to use in their dissertation research, this will probably give you access. It's often very helpful to see how others approached their graduate research and the instruments they used.