Some food items that are commonly considered unhealthy also tend to elicit impulsive responses. The pain of paying in cash can curb impulsive urges to purchase such unhealthy food products. Credit card payments, in contrast, are relatively painless and weaken impulse control. Consequently,...

We examine two questions: Does precision or roundedness of prices bias magnitude judgments? If so, do these biased judgments affect buyer behavior? In a laboratory pre-test, we find that people incorrectly judge precise prices (e.g., $325,425) to be lower than round prices of similar magnitudes...