Using surveys on family assets and debts in Canada, we document a significant decline in the private business equity share of total assets and net worth between 1984 and 1999 for households and entrepreneurs. We propose an explanation based on recent financial developments that allow financial...

Based on the Karhunen-Loeve expansion, the maximum likelihood ratio test for the stability of sequence of Gaussian random processes is investigated. The likelihood function is based on the first p scores of eigenfunctions in the Karhunen-Loeve expansion for Gaussian random processes. Though the...

This paper investigates the effect of private pensions on the retirement wealth distribution. The model incorporates stochastic private pension coverage into a life- cycle model with stochastic earnings. The predictions of the calibrated model are compared to the distribution of retirement net...

No abstract received.

Nonlinear state space models with mixed-effect (NLMESSM) are proposed to model HIV clinical longitudinal data. With NLMESSM, filtering algorithms are proposed to estimate the individual/population states. Maximum likelihood via iterated filtering and variance components model are proposed to...

In many longitudinal studies, repeated measures are often correlated with observation times. Also, there may exist a dependent terminal event such as death that stops the follow-up. In this article, we propose a new joint model for the analysis of longitudinal data in the presence of both...

Using a simple life-cycle model, this paper studies the effects of employer matching and income risk on employees' 401(k) participation and contributions. We find that both employer matching and income risk have a large impact on employee decisions. The effects differ for different income and...

Using the Panel Study of Income Dynamics, this paper studies household stock market participation and trading behavior in 2007–09, a period that saw a major stock market downswing. The stock market participation rate fell after the market crash. We find evidence that less-educated households,...