Expectations are a central part of value calculations in economics. For example, calculating the
Subjective expected utility of an outcome requires knowing both the value of an outcome and the probability that it will occur. Researchers who elicit (or measure) the expectations of individuals can input these beliefs into the model in place of standard probabilities. The strategy of eliciting individual expectations is now incorporated into many international surveys, including the
Health and Retirement Study in the United States. Expectations elicitation is used in many domains, including survival and educational outcomes, but may be most prominent in financial realms. Expectations are theoretically important for models such as the
Efficient-market hypothesis which suggest that all information should be incorporated into the market, as well as for
Modern portfolio theory which suggests that investors must be compensated for higher levels of risk through higher (expected) returns. Following these models, empirical research has found that consumers with more optimistic stock market expectations are more likely to hold riskier assets, and acquire stocks in the near future. Given these promising findings, more recent research in psychology has begun to explore what factors drive consumers' expectations by exploring what factors come to mind when forming stock market expectations. ==See also==