Brain Task (image) Duke University Share Print E-Mail Caption Duke researchers analyzed brain activity of older and younger people while they chose between competing consumer products. In the more challenging version of the task, the participants were shown one item, such as a watch, and had to learn about or "buy" several unrelated items before being shown the second watch. Credit Nichole Lighthall, Duke University Usage Restrictions None Share Print E-Mail 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.