  A well-intentioned principal provides information to a rationally inattentive
agent without internalizing the agent's cost of processing information.
Whatever information the principal makes available, the agent may choose to
ignore some. We study optimal information provision in a tractable model with
quadratic payoffs where full disclosure is not optimal. We characterize
incentive-compatible information policies, that is, those to which the agent
willingly pays full attention. In a leading example with three states, optimal
disclosure involves information distortion at intermediate costs of attention.
As the cost increases, optimal information abruptly changes from downplaying
the state to exaggerating the state.
