The LaSS Library holds a unique collection of approximately 800 tests for the assessment of speech and language development and disorders. These tests can only be used by either qualified clinicians, or by students under strict clinical supervision, and for this reason their use is restricted to Language Sciences students and staff, and members of the Royal College of Speech & Language Therapists. (RCSLT members must pay an annual fee to borrow any items from the Library). Tests are either borrowable for one week at a time or reference which can be used in the library.
Most of the tests are on open access in cabinets at the back of the Library reading room, but certain psychology tests, such as the Wechsler scales and the British Ability Scales, are held on restricted access at the Issue Desk. Tests are usually known by their acronym, e.g. the TROG: Test for the Reception of Grammar. They can be found by looking them up in Explore, in the same way as books, and are arranged in the cabinets by Dewey decimal classmark order followed by the acronym, e.g. 401.93 TROG.