We sketch here the basis of a behavioral theory of non-market decision making or collective action. Departing from the basic social problem, the coordination of individual actions when individual rationality is opposed to collective rationality, we model a population of agents choosing their...

The Vector Autoregressive (VAR) model with zero coefficient restrictions can be formulated as a Seemingly Unrelated Regression Equation (SURE) model. Both the response vectors and the coefficient matrix of the regression equations comprise columns from a Toeplitz matrix. Efficient numerical and...

The estimation and management of risk is an important and complex task faced by market regulators and financial institutions. Accurate and reliable quantitative measures of risk are needed to minimize undesirable effects on a given portfolio from large fluctuations in market conditions. To...