The Blissful Ignorance Effect: Pre- versus Post-action Effects on Outcome Expectancies Arising from Precise and Vague Information

This article examines the effects on outcome expectancies of precise versus vague information across two contexts: prior to an action taken by the consumer (pre-action) and after the action is taken (post-action). Across three experiments, we show that with vague information individuals are more optimistic of outcomes post-action compared to pre-action; this difference is attenuated with precise information. We term this inconsistency the...