JUIOWLEDGE AND DECISIONS
By Thomas Sowell.
422 pp. New York:
Basic Books. $18.50.
By MARC F. PLA'ITNER
HOMAS SOWELL is probably America's most
distinguished black social scientist. An econo
mist by training and profession - currently
professor of economics at U.C.L.A. -he is better
known to a wider public for hit; cogent and unorthodox
writings on such controversial issues as education,
I.Q. tests, affirmative action and ethnicity. In his new