The Congressional Budget Office (CBO) regularly evaluates the accuracy of its economic forecasts by comparing them with the economy¿s actual performance and with others¿ forecasts. Such evaluations help guide CBO¿s efforts to improve the quality of its forecasts and are also intended to assist Members of Congress in their use of the agency¿s estimates. Contents of this report: (1) Choice of Forecasts for the Evaluation; (2) Measuring the Quality of Forecasts: Statistical Bias; Accuracy; Alternative Measures of Forecast Quality; (3) Limitations of Forecast Evaluations: (4) The Effects of Bus. Cycles, Changes in the Trend Rate of Productivity Growth, and Oil Price Shocks; (5) Forecasting Record: 2-Year Forecasts; 5-Year Projections; (6) Historical and Forecast Data.