Book excerpt: This is a book for all neuropsychologists who are called upon to assess culturally different clients--with very few exceptions today, this means every neuropsychologist. In Minneapolis as in Oslo, migrant and refugee minorities raise assessment and test validity problems that cannot be ignored. To deal realistically with the problem of doing neuropsychological assessments without norms, Nell describes the principles of a "behavioral neuropsychology," and then sets out interview, test, and interpretation methods that will allow clinicians to produce valid and prognostically accurate assessments. For working neuropsychologists, this is an intensely practical, how-to-do-it book. But unlike other hands-on guides, it lays an impressive historical and theoretical foundation for the practice of cross-cultural neuropsychology. It thus speaks to serious practitioners who need to be certain that their assessment findings are not only correct, but also sufficiently well-grounded to stand up to professional scrutiny and to forensic testing in a court of law.