Current decision-making models assume that an individual's attitude towards risk does not vary across different sources. A decision maker's processing of known probabilities and the resulting degree of probability weighting should therefore be unique. This paper provides evidence that challenges...

In nine studies, we find that investors intuitively distinguish two independent dimensions of uncertainty: epistemic uncertainty that they attribute to missing knowledge, skill, or information, versus aleatory uncertainty that they attribute to chance or stochastic processes. Investors who view...