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Journal Article
Old wine at new prices
Journal Article
Where's the productivity growth (from the information technology revolution)?
Information technology has advanced rapidly in the last two or three decades, and an equivalent rapid gain in economy-wide productivity has been anticipated. Productivity statistics, however, do not support this expectation. Although productivity growth has risen since the slowdown witnessed in the 1970s, it can hardly be described as phenomenal. Donald S. Allen discusses some of the current explanations for this apparent disparity and suggests that, as the workforce catches up to the technology level and exploits its full potential, productivity growth will increase.
Working Paper
Forecasting with an adaptive control algorithm
We construct a parsimonious model of the U.S. macro economy using a state space representation and recursive estimation. At the core of the estimation procedure is a prediction/correction algorithm based on a recursive least squares estimation with exponential forgetting. The algorithm is a Kalman filter-type update method which minimizes the sum of discounted squared errors. This method reduces the contribution of past errors in the estimate of the current period coefficients and thereby adapts to potential time variation of parameters. The root mean square errors of out-of-sample forecast ...
Working Paper
Filtering permanent cycles with complex unit roots
Separating cyclical movement from trend growth at seasonal and business cycle frequencies is important to macroeconomic research. At business cycle frequencies, time trends, first differences and the more recent Hodrick-Prescott (HP) filter are used to separate trends from cycles. At seasonal frequencies, ad-hoc methods like the Census Bureau's X-11 seasonal filter are applied. This paper reviews the criteria for permanent cycles in systems characterized by difference equations and looks at the effect of filtering data which exhibit permanent cyclicality. Second order moving averages with ...
Journal Article
What determines long-run growth?
Journal Article
Do inventories moderate fluctuations in output?
Inventories are widely believed to serve as a buffer stock against unexpected fluctuations in demand, allowing firms to plan production more efficiently. If so, we would expect production to vary less than sales and inventory to move in the opposite direction to sales. However, research finds that production varies more than sales and that there is a positive correlation between changes in inventory and changes in sales. These findings imply that inventories are not being used to smooth production and do not serve as a buffer for uncertain demand. Donald S. Allen examines firm-level data and ...
Working Paper
The efficiency of residential mortgage guarantee insurance markets
Mortgage Guarantee Insurance (MGI) provides protection to lenders against default by borrowers who have less than 20 percent equity interest in the mortgaged property. The existence of this form of insurance helps to stimulate home ownership by allowing consumers with less than twenty percent down payment access to credit markets. Initially an invention of lenders, MGI became dominated by government agencies after the Great Depression but recently private insurers have increased their market share to more than 75 percent. The domination of the industry by the private sector appears not to ...
Journal Article
Changes in inventory management and the business cycle
Working Paper
Why does inventory investment fluctuate so much during contractions?
Inventory investment appears to have a significant impact on the movement of aggregate output during business cycle contractions. Recent empirical evidence has raised doubts about the often used assumption of a buffer-stock/production-smoothing motivation for inventory. Work by Blinder and Maccini suggests that the use of an (S,s), or intermittent adjustment decision rule, better explains the stylized facts of the dynamics of inventory investment. This has led to the focus on the (S,s) as an alternative to production-smoothing. I assume that some agents use the (S,s) adjustment rule while ...
Journal Article
Another soft inventory landing?