Decision making under uncertainty: How numerical ability affects the use of uncertainty information

There is a growing literature on how individual differences in numerical ability (numeracy) affect the understanding and use of numbers in decision making. Studies in several different domains have shown that more numerate individuals use appropriate numerical principles and draw more meaning from numbers compared to those who are less numerate. Less numerate individuals appear to be influenced more by other, often less relevant, sources of information. In this talk, we will briefly discuss general findings and focus on how numeracy affects the use of probability and uncertainty information.