Chdpter 29
ECONOMETRIC ANALYSIS OF LONGITUDINAL DATA*
JAMES J. HECKMAN
Uniuersiiy of Chicugo and NORC
BURTON SINGER
Yule University und NORC
Contents
0. Introduction 1690
1. Single spell models 1691
1.1. Statistical preliminaries 1691
1.2. Examples of duration models produced by economic theory 1695
1.3. Conventional reduced form models 1704
1.4. Identification and estimation strategies 1710
1.5. Sampling plans and initial conditions problems 1727
1.6. New issues that arise in formulating and estimating choice theoretic duration models 1744
2. Multiple spell models 1748
2.1. A unified framework 1748
2.2. General duration models for the analysis of event history data 1753
3. Summary 1759
References 1761