A Core Test Battery
As noted in chapter 5, clinicians working with clients from culturally different backgrounds feel compelled by reality demands to make immediate use of familiar assessment instruments, even if they have not been validated for use outside the Western cultural enclave. The purpose of this chapter is to discuss the principles of test selection, administration, and interpretation that will allow clinical work to proceed while the task of test validation and norming for clients outside the Western mainstream is in progress.
Given the huge proliferation of psychological and neuropsychological tests on the one hand (over 500 tests are indexed in the third edition of Lezak Neuropsychological Assessment, 1983), and the limited research resources available for this specialized task, dissipation of effort by unfocused norming ventures will squander resources that could be used to gather scores for core tests for which at least some international norms already exist.
What is needed is a core battery of neuropsychological tests that focus around which researchers can pursue individual interests and at the same time meet the needs of regional and international collaboration by using these core tests as marker tests within their own more extensive batteries. Unfortunately, though "core battery" is a popular term in current neuropsychology, it has no meaning that goes beyond the ad hoc needs and target population of particular research groups. There is a core battery of neuropsychological tests for the assessment of multiple sclerosis ( Beatty &