Alfred M. Skolnik, 56, chief of the inter-program studies branch of the Social Security Administration, died Thursday at George Washington University Hospital after an apparent heart attack.

Born in Brooklyn, N.Y., he was a graduate of New York University and received a master's degree from Columbia University and a doctorate in political science from American University.

Mr. Skolnik came to this area 27 years ago to work for the Social Security Administration. He was the author of 70 articles and reports, most of which were published in the Social Security Bulletin. He also was coauthor of a book, "Social Welfare Expenditures 1929-66."

Long active in community affairs in Greenbelt, Mr. Skolnik was a reporter, editor and then president of the News Review Cooperative Publishing Co. In 1959, he became editor and publisher of the Greenbelt News Review, the weekly newspaper put out by the company.

He is survived by his wife, Elaine, and a son, Richard, both of the home in Greenbelt; two daughters, Barbara Goldman, of New York City, and Rita Felde, of Greenbelt; his mother, Beatrice Skolnik, of Miami, Fla., and a brother, Lawrence, of Scarsdale.

The family suggests that expressions of sympathy may be in the form of contributions to the Alfred Skolnik Greenbelt News Review Fund for Special Projects in care of the Twin Pines Savings and Loan Association in Greenbelt.