This paper develops a behavioural asset pricing model in which traders are not fully rational as is commonly assumed in the literature. The model derived is underpinned by the notion that agents' preferences are affected by their degree of optimism or pessimism regarding future market states. It...

In this paper we introduce a new, analytically tractable model for decision-making under risk in which psychological characteristics related to the degree of optimism or pessimism of the decision-maker are considered. The model we propose, which is based on a two-parameter optimism weighting...