* represents sets by norms and prototypes, does not integrate ' * matches intensities across scales (e.g., size to loudness)computes more than intended (mental shotgun) * sometimes substitutes an easier question for a difficult one (heuristics) * is more sensitive to changes than to states (prospect theory)1 * overweights low probabilities * shows diminishing sensitivity to quantity (psychophysics)1 * responds more strongly to losses than to gains (loss aversion)1 * frames decision problems narrowly, in isolation from one another.