This paper develops a tractable econometric model of optimal migration, focusing on expected
income as the main economic influence on migration. The model improves on previous …

… and James Walker … Dean has read and commented on many of the chapters in this book,
recruited subjects, run experiment "trainers," helped Walker and Ostrom cope with the …

Contemporary political theory often assumes that individuals cannot make credible
commitments where substantial temptations exist to break them unless such commitments are …

Dowty’s (1991) theory of argument selection has proved remarkably influential, though it is
rather modest in scope and was never intended as a fullyfledged theory of mapping between …

We suggest that the partial pressure of carbon dioxide in the atmosphere is buffered, over
geological time scales, by a negative feedback mechanism in which the rate of weathering of …

In the first edition of his seminal introduction to wavelets, James S. Walker informed us that
the potential applications for wavelets were virtually unlimited. Since that time thousands of …

This paper examines the relationship between variations in group size and “free-riding”
behavior in the voluntary provision of public goods. We examine experimentally two pertinent …

Preeclampsia is a serious complication of pregnancy in which the fetus receives an
inadequate supply of blood due to failure of trophoblast invasion. There is evidence that the …

Trust is essential to economic and social transactions of all kinds, from choosing a marriage
partner, to taking a job, and even buying a used car. The benefits to be gained from such …

Carbonate and organic matter deposited during the latest Paleocene thermal maximum is
characterized by a remarkable −2.5‰ excursion in δ 13 C that occurred over ∼10 4 yr and …