The purpose of this study was, first, to estimate the impact of alcohol and drug use on the employment status of men and women and, second, to examine whether a history of past use, as opposed to current use, adversely affects the propensity to be employed. Using data from the National...

The purpose of this study was, first, to estimate of the impact of alcohol and drug use on the employment status of men and women, and second, to examine whether a history of past use, as opposed to current use, adversely affects the propensity to be employed. <p>Using data from the National...</p>

Consider a simple world populated with two kinds of individuals, those who work and create wealth (peasants) and those who survive by taking the property of others (bandits). The presence of bandits creates an incentive for peasants to seek protection, to defend their property. But protection is...

Consider a simple economy in which autonomous agents are endowed with two goods, g1 and g2, and with the capability of producing more of each. At regular intervals each agent is allowed to produce one of the goods, at a rate determined by his own unique production function, or to trade with...

Pragmatic decision makers adjust their view and their decisions to the state of the world. Ideological decision makers follow a guiding principle making decisions that do not change with circumstances. Either philosophy can be successful. This study explores a group of virtual agents, some of...

We tend to interact with same people, day after day. Might this affect our behavior? In an abstract fashion, we look at this question. To model this repeated interaction with a small subset of the entire population we place agents on the nodes of a network and have them play a prisoners’...