Forecast errors for inflation decline monotonically with both verbal and quantitative IQ in a large and representative male population. Within individuals, inflation expectations and perceptions are autocorrelated only for men above the median by IQ (high-IQ men). High-IQ men's forecast...

We document that a large fraction of a representative population of men—those below the top of the distribution by cognitive abilities (IQ)—barely reacts to measures of monetary and fiscal policy that aim at influencing their leverage and durable spending decisions. To the contrary, high-IQ...