We analyze the retirement behaviour of older self-employed workers, using a life cycle framework and a multinomial logit model of dynamic employment and retirement choices. Using data from the two-wave Retirement Survey, we find that greater actual or potential earnings decrease the probability...

The challenge of understanding complex systems often gives rise to a multiplicity of models. It is natural to consider whether the outputs of these models can be combined to produce a system prediction that is more informative than the output of any one of the models taken in isolation. And, in...

A necessary condition is derived for negativity in the almost ideal demand system (AIDS) when used with the Stone price index. This condition is very simple and can be examined by a t-test on a single equation within the framework of ordinary least squares (OLS) estimation.