Person in placebo enhancement experiment (IMAGE) Aalto University Caption The researchers measured risk-taking with the Columbia Card Task experiment. Credit Robin Welsch / Aalto University Usage Restrictions May be used in publications related to this release with appropriate credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.