P122 CEEFAX 122 Wed 29 Dec 13:18/32 US CUTS GROWTH FORECASTS President Reagan's economic advisers have cut back their forecast for US economic growth in 1983 and are now predicting slow expansion in the first half of next year. A report in the New York Times s!ys they now expect a real increase in gross national product (GNP) of less than 2pc in 1983, compared with the 3.1pc rise predicted in September. The US unemployment rate, which reached a 40-year high of 10.8pc in Novjm"jr, is unlikely to show much reduction "y the end of 1983. WALL STREET REPORT 127