Handling preferences in presence of constraints is an important concept in many applications. The main purpose of this paper is to provide a new non-classical logic for representing and reasoning with preferences and functional constraints in uncertain environments. This logic, called Conjunctive Choice Logic (CCL), aims to determine feasible solutions in such environments and evaluate their sa...

We report on an experiment investigating whether the Hayak Hypothesis (Smith, 1982) extends to the long run setting. We consider two environments; one with a common production technology having a U-shaped long run average cost curve and a single competitive equilibrium, and another with a common constant returns to scale technology having a constant long run average cost curve and multiple comp...

In the paper, we introduce and study generalized weighted influence indices of a coalition on a player, where players have an ordered set of possible actions. Each player has an inclination to choose one of the actions. Due to influence of a coalition of other players, a final decision of the player may be different from his original inclination. An influence in such situations is measured by t...

We put forward a brand choice model with unobserved heterogeneity that concerns responsiveness to marketing efforts. We introduce two latent segments of households. The first segment is assumed to respond to marketing efforts while households in the second segment do not do so. Whether a specific household is a member of the first or the second segment at a specific purchase occasion is describ...

-Foraging models are a growing pan of the ethnobiological study of huntergatherers . Highly simplified for analytic reasons, the early "classical" versions of these models excluded consideration of several relevant factors. Among them is the possibilit y of maladaptive food shortages due to the effects of stochastic environmental fluctuations on food capture rates . To remedy this deficiency, t...

We investigate a generalisation of the coherent choice functions considered by Seidenfeld et al. (2010), by sticking to the convexity axiom but imposing no Archimedeanity condition. We define our choice functions on vector spaces of options, which allows us to incorporate as special cases both Seidenfeld et al.'s (2010) choice functions on horse lotteries and sets of desirable gambles (Quaegheb...

Conventional wisdom, buttressed by numerous empirical studies, has questioned the importance of both class and ideological factors on voting behavior in Canada. However, two recent studies of the 1997 Canadian national election [Gidengil et al., Canadian J. Political Sci. 32 (1999) 247; Nevitte et al., Unsteady State: The 1997 Canadian Federal Election, Oxford University Press, Ontario, 2000] i...

Analysts are increasingly making use of pivot style Stated Choice (SC) data in the estimation of choice models. These datasets often contain a reference alternative whose attributes remain invariant across replications for the same respondent. This paper presents some evidence to suggest that the standard specification used for such data may not be appropriate. As such, our analysis shows diffe...

The paper aims to demonstrate the importance of behavioural issues in environmental modelling. These issues can relate both to the modeler and to the modelling process including the social interaction in the modelling team. The origins of behavioural effects can be in the cognitive and motivational biases or in the social systems created as well as in the visual and verbal communication strateg...

Analyses of the welfare system generally examine one of five competing models: (1) The work disincentive model; (2) the human capital model; (3) the macroeconomic model; (4) the public choice model; or (5) the cost-of-job-loss model. This paper employs the Granger causality concept and the multiple-rank F statistic to test the implications of all five of these models simultaneously. The results...