This paper presents a nonparametric analysis of a common class of intertemporal models of consumer choice that relax consumption independence. Within this class and in the absence of any functional form restrictions on instantaneous preferences, we compare the revealed preference conditions for rational habit formation and rational anticipation. We show that these models are observationally equivalent in the presence of finite data sets composed of prices, interest rates, and consumption choices.
Authors


Research Associate University of Leicester
Professor of Economics at the University of Leicester. His research interests are in applied microeconomics and microeconomic theory.
Journal article details
- DOI
- 10.1016/j.jmateco.2014.03.007
- Publisher
- Elsevier
- Issue
- May 2014
Suggested citation
Crawford, I. and Polisson, M. (2014), 'Testing for intertemporal nonseparability', Journal of Mathematical Economics, https://doi.org/10.1016/j.jmateco.2014.03.007
More from IFS
Understand this issue

Drastic times need drastic action: breaking the 50-year tax taboo
Rachel Reeves should consider increasing the basic rate, just as Denis Healey did in 1975
14 April 2025

Spending Review 2025: What it means and why it matters
We take a closer look at the Spending Review and what the policies mean for public services, investment and the wider economy.
12 June 2025

Rank of local authorities by average household income compared to rank by average consumption after housing costs
On average, London local authorities rank at the top of the income distribution, but are bottom of the net-of-housing consumption distribution.
11 April 2025
Policy analysis

IFS ‘Be the Chancellor’ tool illustrates all-important choices at upcoming Spending Review
The 'Be the Chancellor' tool, built by IFS researchers in partnership with Nesta, illustrates key choices and fiscal challenges Rachel Reeves faces.
21 May 2025

Radical tax and spending plans are fine, but they must be realistic
The rise of Reform and the Greens is healthy for democracy, but not if their manifestos are sheer fantasy
12 May 2025

Immediate response to today's Scottish Fiscal Commission economic and fiscal forecasts
Updated forecasts for tax revenues and benefit spending imply a more challenging funding outlook for the Scottish Government.
29 May 2025
Academic research

Landfill tax and recycling
This paper provides new empirical evidence on the role of landfill taxes in reducing landfill waste and promoting recycling.
6 May 2025

Focal pricing constraints and pass-through of input cost changes
I show that the adoption and extent of focal pricing practices in an industry in general do not lower average pass-through of input cost changes.
2 May 2025

Measuring cost of living inequality during an inflation surge
We provide new evidence that inflation inequality surged during the 2021–2023 cost-of living crisis.
9 May 2025