Wharton Econometric Forecasting Project

Wharton Econometric Forecasting Project. It was a pioneering research initiative established at the University of Pennsylvania that became a cornerstone of modern economic forecasting. Founded by Nobel laureate Lawrence Klein, the project developed and maintained large-scale econometric models of the United States and world economies. Its work profoundly influenced academic research, government policy, and commercial forecasting for decades.

History and founding

The initiative was formally launched in 1963 under the leadership of Lawrence Klein, a professor at the Wharton School of the University of Pennsylvania. Klein, who had previously worked on the pioneering Brookings Model, sought to create a more practical and frequently updated forecasting tool. The project's establishment was supported by grants from institutions like the National Science Foundation and the Social Science Research Council. Its early success was demonstrated during the Kennedy administration, and it grew significantly throughout the 1960s and 1970s, eventually spinning off a commercial forecasting service. This period of expansion coincided with the rise of mainframe computers, which were essential for solving the project's complex models. The project's prominence was further cemented when Klein was awarded the Nobel Memorial Prize in Economic Sciences in 1980 for his work in creating econometric models.

Methodological approach

The project's core methodology was the construction and estimation of large-scale Keynesian simultaneous-equations models. These models mathematically represented the intricate relationships between hundreds of economic variables, such as GNP, unemployment, inflation, and interest rates. Unlike theoretical models, the Wharton models were empirically estimated using historical time-series data from sources like the Bureau of Economic Analysis and the Federal Reserve. A key innovation was the use of two-stage least squares and other advanced estimation techniques to address statistical issues. The models were designed for dynamic simulation and forecasting, requiring powerful IBM computers housed at the University of Pennsylvania to generate quarterly predictions for the American economy.

Key models and applications

The flagship model was the **Wharton Model**, a quarterly econometric model of the United States that underwent several major versions. This model was extensively used to forecast business cycle fluctuations and to analyze the potential impacts of changes in fiscal policy and monetary policy. The project later developed the **Wharton Annual and Industry Model**, which provided deeper sectoral detail. Internationally, the team constructed models for other major economies, which were linked to form the **Project LINK** system, a global model overseen by Klein under the auspices of the United Nations. These models were applied to assess the global effects of the 1973 oil crisis, trade policies, and international debt issues. Commercial clients, including General Motors and Chase Manhattan Bank, subscribed to the project's regular forecast publications.

Impact and legacy

The project had a transformative impact on the field of applied econometrics, demonstrating the practical utility of large-scale models for policy analysis. It provided a formal framework for the Council of Economic Advisers and the Congressional Budget Office to evaluate economic policies. The project's commercial arm, Wharton Econometric Forecasting Associates, was a forerunner to later firms like Data Resources, Inc. and Macroeconomic Advisers. While its dominance waned with the rise of rational expectations critiques and vector autoregression models, its foundational work is still acknowledged. The integration of its global modeling efforts into Project LINK left a lasting legacy in international economic cooperation and analysis.

Notable personnel

The project was led by its founder, Lawrence Klein, whose vision defined its mission. Key researchers included Michael D. McCarthy, who directed model development and authored significant texts on econometric practice. F. Gerard Adams was instrumental in managing the project and its applications. Other notable economists who worked there include Albert Ando, known for contributions to consumption function theory, and George R. Green, who later held positions at the Federal Reserve Board of Governors. The project also served as a training ground for a generation of econometricians who took prominent roles in academia, institutions like the International Monetary Fund, and on Wall Street.

Category:Econometrics Category:Economic forecasting Category:Wharton School of the University of Pennsylvania Category:Research projects