Kilson said he got most of his information from the Office of Tests.
The controversy over the article started last April when the Harvard Bulletin, which was originally scheduled to print it, gave galley proofs of the article to four black students who asked to see it.
The students returned the proofs with a list of alleged inaccuracies in the article, and the Bulletin postponed its publication so that the facts Kilson used could be checked.
Kilson charged that the postponement was due to "political pressures" and that the Bulletin had interfered with his "intellectual freedom" by giving the students proofs of his article.
He also filed a complaint with the Commission of Inquiry and the Committee on Rights and Responsibilities, charging that several University officials had tried to suppress the publication of his article.
Kilson submitted the article to The New York Times Magazine shortly after he found out that the Bulletin had given the proofs to the students.
Kilson said yesterday that Dean Epps and Orlando Patterson, professor of Sociology, have worked with him on trying to get more middle class blacks into Harvard.
"The middle class is not only a monetary distinction," he said, "but also a style of life, a set of attitudes, including high performance orientation."
Harvard should institute a mandatory program for academic "deficients" such as low-income blacks, Kilson said