Public opinion influences politicians, and therefore influences public policy decisions. What
are the roles of self-interest, knowledge, and ideology in public opinion formation? And how
do people learn about economic issues? Using a new, specially-designed survey, we find
that most respondents express a strong desire to be well informed on economic policy
issues, and that television is their dominant source of information. On a variety of major
policy issues (e.g., taxes, social security, health insurance), ideology is the most important
determinant of public opinion, while measures of self-interest are the least important.
Knowledge about the economy ranks somewhere in between.