September 30, 1981

President Reagan said developing nations must provide incentives to private enterprise so it can play a much larger role in building their economies. Mr. Reagan, addressing the 36th annual meeting of the World Bank and the International Monetary Fund in Washington, said that, unless a nation acted to spur its own economic growth, no amount of outside aid would help. (Page A1.) West German and French engineering companies contracted to supply 22 compressors along a pipeline that will bring gas from Siberia to the Soviet Union's western border. The $956.5 million deal, signed in Dusseldorf, was the first step toward building a pipeline to supply Europe with Soviet natural gas. (D11.)

Although it may be too soon to tell how high rates will go, spokesmen for commercial banks and thrift institutions assert that last week's decision to remove the interest-rate ceiling on the retirement savings accounts they offer might set off a bidding war for funds. The decision by Federal banking regulators is drawing fire from sa vings banks and savings and loan associations, which fear that a pr ice war would increase their cost of money. The move, however, has be en generally applauded by commercial banks. Spokesmen for both the commercial banks and the thrift institutions said that higher rates would have to be offered than at present. ''With banks competing to make these long-term commitments in I.R.A. and Keogh accounts,'' Edmond Shanahan, president of Bell Federal Savings in Chicago, said, ''my fear is that we will see some people who jump too soon and for the next 40 years regret their actions.''

Reports of suspected child abuse and neglect have increased recently in New York City, and the city has expanded its social service efforts to address the family problems involved. The number of reports has risen from 14,300 in 1976 to more than 19,300 last year, when 32,078 children were involved. More than half of the reports prove unfounded, and part of the increase is credited to greater public awareness. But social agency officials believe that because of unemployment, poor housing and other situations that cause stress, there has been an actual increase in violence in society in general and in violence directed against children. Public awareness of the problem has been heightened by several tragic cases recently, including the death of a 5-year-old boy on Monday. The boy was declared dead on arrival at Jamaica Hospital, after he was found unconscious and covered with bruises.

Congressional sources reported tonight that President Reagan's new arms program is likely to include deployment of 100 MX mobile missiles in 1,000 silos in the West and the construction of 50 of the new B-1 bombers. The White House refused to confirm those details, but announced tonight that ''basic decisions'' had been made on the arms program. A program such as the one described by the Congressional sources would represent a gradual approach to building up a stronger nuclear deterrent. Administration sources say Caspar W. Weinberger, the Secretary of Defense, has been recommending this type of approach to the President.

After Monday's hectic trading and wide price swings, the stock market advance d broadly yesterday, with trans portation and some technology issues posting the biggest gains. The Dow Jones industrial average was up as much as 12 points early in the day. But prices slid somewhat in afternoon trading as some investors apparently sold to realize short-term profits. The Dow finally ended the day with a gain of 5.33 points, at 847.89.