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Working Paper
The Effect of Component Disaggregation on Measures of the Median and Trimmed-Mean CPI
For decades, the Federal Reserve Bank of Cleveland (FRBC) has produced median and trimmed-mean consumer price index (CPI) measures. These have proven useful in various contexts, such as forecasting and understanding post-COVID inflation dynamics. Revisions to the FRBC methodology have historically involved increasing the level of disaggregation in the CPI components, which has improved accuracy. Thus, it may seem logical that further disaggregation would continue to enhance its accuracy. However, we theoretically demonstrate that this may not necessarily be the case. We then explore the ...
Journal Article
Is a Nonseasonally Adjusted Median CPI a Useful Signal of Trend Inflation?
Since controlling inflation is a central monetary policy goal, monetary policymakers focus intently on inflation signals. But they face a major difficulty: inflation data contain a lot of transitory shocks. The presence of the transitory ?noise? in inflation data makes it difficult to detect early warnings of sustained movements. Responding to these transitory shocks would be a bad idea, because doing so would translate into policy swings and reversals and introduce uncertainty and volatility into the economy. Instead, policymakers attempt to respond to the sustained movements in ...
Journal Article
New-Tenant Rent Passthrough and the Future of Rent Inflation
New-tenant rent inflation rose sharply during the COVID-19 pandemic, subsequently falling. Concomitantly, consumer price index (CPI) tenant rent, which measures rent increases for both new and continuing renters, rose more gradually and, after falling somewhat, has remained elevated. To illustrate why CPI rent inflation has remained elevated, we combine a measure of new-tenant rents and annual renter mobility rates to create a simulated CPI tenant rent inflation measure. We use this simulation to define a “rent gap” that represents the difference between actual CPI tenant rent inflation ...
Working Paper
Improving the Median CPI: Maximal Disaggregation Isn't Necessarily Optimal
Median Consumer Price Indexes have proved useful in many contexts and are used worldwide as key policymaking inputs. Historically, US Median CPI improvements involved increasing the CPI component level of disaggregation; one might reasonably assume that further disaggregation would lead to further improvements. We theoretically demonstrate herein: not necessarily. We then empirically explore the impact of further disaggregation. Substantially more disaggregation in the shelter indexes and slightly more disaggregation in the remaining components improve the ability of Median CPI to track the ...
Journal Article
How Much Slack Is in the Labor Market? That Depends on What You Mean by Slack
Estimates of labor market slack can diverge a great deal depending on how slack is defined. We calculate slack using five different concepts that all focus on a single labor market indicator, the unemployment rate. We show that the estimates all provide useful?but different?information. We argue that choosing the best measure of slack depends on the question being asked. If the question is, ?Has the unemployment rate reached its longer-run normal level?? then our answer is, ?Almost.? But significant uncertainty surrounds the estimates; and others may wish to consider additional labor market ...
Journal Article
Inflation’s Last Half Mile: Higher for Longer?
Will inflation quickly return to the FOMC’s target of 2 percent? I explore this question through the lens of the Verbrugge and Zaman (2023) model—the VZ model—a structural model whose forecasts are competitive with hard-to-beat forecasting models. The time it takes to get to the target depends on the persistence of inflation, and theory gives mixed signals about whether inflation persistence is currently high or low. The VZ model distinguishes between two sources of inflation persistence, extrinsic and intrinsic, and implies that inflation has high intrinsic persistence. If the ...
Working Paper
Tracking Trend Inflation: Nonseasonally Adjusted Variants of the Median and Trimmed-Mean CPI
We make five contributions. We demonstrate that extant trimmed-mean and median CPI construction procedures depart from Bureau of Labor Statistics index construction procedures, and that the departures don't make much of a difference. We produce nonseasonally adjusted variants of the trimmed-mean CPI and median CPI, and demonstrate that these are useful real-time estimates of trend inflation; the NSA median CPI outperforms the median CPI, but both SA and NSA variants of the median and the trimmed-mean CPI easily dominate the so-called "core" CPI. We introduce superior ex post measures of trend ...
Working Paper
Persistence Dependence in Empirical Relations: The Velocity of Money
Standard theory predicts persistence dependence in numerous economic relationships. (For example, persistence dependence is precisely the kind of nonlinear relationship posited in the Permanent Income Hypothesis; persistence dependence is the inverse of ?frequency dependence? in a relationship.) Until recently, however, it was challenging to achieve credible inference about persistence dependence in an economic relationship using available methods. However, recently developed econometric tools (Ashley and Verbrugge, 2009a) allow one to elegantly quantify the variation in a time-series ...
Working Paper
Frequency Dependence in a Real-Time Monetary Policy Rule
We estimate a monetary policy rule for the US allowing for possible frequency dependence?i.e., allowing the central bank to respond differently to more persistent innovations than to more transitory innovations, in both the unemployment rate and the inflation rate. Our estimation method uses real-time data in these rates?as did the FOMC?and requires no a priori assumptions on the pattern of frequency dependence or on the nature of the processes generating either the data or the natural rate of unemployment. Unlike other approaches, our estimation method allows for possible feedback in the ...
Working Paper
Location, Location, Structure Type: Rent Divergence within Neighborhoods
Housing rents are a large share of household budgets and make a large contribution to overall inflation. Rent inflation rates for different types of housing units sometimes diverge, even in the same neighborhoods. We estimate during 2013 to 2016 apartment rents outpaced rents for detached housing in the United States by 0.76 percentage points annually after controlling for location effects. These rent dynamics imply a segmented housing market. They also suggest rent indexes need to be based on data structurally representative of their measurement objective. In particular, indexes based on ...