The age‐time‐cohort problem and the identification of structural parameters in life‐cycle models

B-Tier
Journal: Quantitative Economics
Year: 2018
Volume: 9
Issue: 2
Pages: 643-658

Authors (1)

Sam Schulhofer‐Wohl (not in RePEc)

Score contribution per author:

2.011 = (α=2.01 / 1 authors) × 1.0x B-tier

α: calibrated so average coauthorship-adjusted count equals average raw count

Abstract

A standard approach to estimating structural parameters in life‐cycle models imposes sufficient assumptions on the data to identify the “age profile” of outcomes, then chooses model parameters so that the model's age profile matches this empirical age profile. I show that this approach is both incorrect and unnecessary: incorrect, because it generally produces inconsistent estimators of the structural parameters, and unnecessary, because consistent estimators can be obtained under weaker assumptions. I derive an estimation method that avoids the problems of the standard approach. I illustrate the method's benefits analytically in a simple model of consumption inequality and numerically by reestimating the classic life‐cycle consumption model of Gourinchas and Parker (2002).

Technical Details

RePEc Handle
repec:wly:quante:v:9:y:2018:i:2:p:643-658
Journal Field
General
Author Count
1
Added to Database
2026-01-29