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Report
A Measure of Trend Wage Inflation
We extend time-series models that have so far been used to study price inflation (Stock and Watson [2016a]) and apply them to a micro-level dataset containing worker-level information on hourly wages. We construct a measure of aggregate nominal wage growth that (i) filters out noise and very transitory movements, (ii) quantifies the importance of idiosyncratic factors for aggregate wage dynamics, and (iii) strongly co-moves with labor market tightness, unlike existing indicators of wage inflation. We show that our measure is a reliable real-time indicator of wage pressures and a good ...
Report
Aggregate Output Measurements: A Common Trend Approach
We analyze a model for N different measurements of a persistent latent time series when measurement errors are mean-reverting, which implies a common trend among measurements. We study the consequences of overdifferencing, finding potentially large biases in maximum likelihood estimators of the dynamics parameters and reductions in the precision of smoothed estimates of the latent variable, especially for multiperiod objects such as quinquennial growth rates. We also develop an R2 measure of common trend observability that determines the severity of misspecification. Finally, we apply our ...
Discussion Paper
Inflation Persistence: How Much Is There and Where Is It Coming From?
The surge in inflation since early 2021 has sparked intense debate. Would it be short-lived or prove to be persistent? Would it be concentrated within a few sectors or become broader? The answers to these questions are not so clear-cut. In our view, one should ask how much of the inflation is persistent and how much of it is broad-based. In this post, we address this question through a quantitative lens. We find that the large ups and downs in inflation over the course of 2020 were largely the result of transitory shocks, often sector-specific. In contrast, sometime in the fall of 2021, ...
Discussion Paper
Inflation Persistence: Dissecting the News in January PCE Data
This post presents updated estimates of inflation persistence, following the release of personal consumption expenditure (PCE) price data for January 2023. The estimates are obtained by the Multivariate Core Trend (MCT), a model we introduced on Liberty Street Economics last year and covered most recently here and here. The MCT is a dynamic factor model estimated on monthly data for the seventeen major sectors of the PCE price index. It decomposes each sector’s inflation as the sum of a common trend, a sector-specific trend, a common transitory shock, and a sector-specific transitory shock. ...
Discussion Paper
A Turning Point in Wage Growth?
The surge in wage growth experienced by the U.S. economy over the past two years is showing some tentative signs of moderation. In this post, we take a closer look at the underlying data by estimating a model designed to isolate the persistent component—or trend—of wage growth. Our central finding is that this trend may have peaked in early 2022, having experienced an earlier rise and subsequent moderation that were broad-based across sectors. We also find that wage growth seems to be moderating more slowly than the trend in services inflation.
Discussion Paper
Where Is Inflation Persistence Coming From?
Elevated inflation continues to be a top-of-mind preoccupation for households, businesses, and policymakers. Why has the post-pandemic inflation proved so persistent? In a Liberty Street Economics post early in 2022, we introduced a measure designed to dissect the buildup of the inflationary pressures that emerged in mid-2021 and to understand where the sources of its persistence are. This measure, that we labeled Multivariate Core Trend (MCT) inflation analyzes whether inflation is short-lived or persistent, and whether it is concentrated in particular economic sectors or broad-based.
Discussion Paper
How Large Are Inflation Revisions? The Difficulty of Monitoring Prices in Real Time
With prices quickly going up after the COVID-19 pandemic, inflation releases have rarely been as present in the public debate as in recent years. However, since inflation estimates are frequently revised, how precise are the real-time data releases? In this Liberty Street Economics post, we investigate the size and nature of revisions to inflation. We find that inflation estimates for a given month can change substantially as subsequent data vintages are released. As an example, consider March 2009. With the economy contracting amid the Global Financial Crisis, the twelve-month inflation rate ...
Discussion Paper
Reintroducing the New York Fed Staff Nowcast
“Nowcasts” of GDP growth are designed to track the economy in real time by incorporating information from an array of indicators as they are released. In April 2016, the New York Fed’s Research Group launched the New York Fed Staff Nowcast, a dynamic factor model that generated estimates of current quarter GDP growth at a weekly frequency. The onset of the COVID-19 pandemic sparked widespread economic disruptions—and unprecedented fluctuations in the economic data that flow into the Staff Nowcast. This posed significant challenges to the model, leading to the suspension of publication ...
Discussion Paper
The Layers of Inflation Persistence
In a recent post, we introduced the Multivariate Core Trend (MTC), a measure of inflation persistence in the core sectors of the personal consumption expenditure (PCE) price index. With data up to February 2022, we used the MCT to interpret the nature of post-pandemic price spikes, arguing that inflation dynamics were dominated by a persistent component largely common across sectors, which we estimated at around 5 percent. Indeed, over the year, inflation proved to be persistent and broad based, and core PCE inflation is likely to end 2022 near 5 percent. So, what is the MCT telling us today? ...
Discussion Paper
Is the Recent Inflationary Spike a Global Phenomenon?
In the aftermath of the COVID-19 pandemic, inflation rose almost simultaneously in most economies around the world. After peaking in mid-2022, inflation then went into decline—a fall that was just as universal as the initial rise. In this post, we explore the interrelation of inflation dynamics across OECD countries by constructing a measure of the persistence of global inflation. We then study the extent to which the persistence of global inflation reflects broad-based swings, as opposed to idiosyncratic country-level movements. Our main finding is that the spike and subsequent moderation ...