Duck Flock (image) Princeton University Caption The trope that the likelihood of an accurate group decision increases with the abundance of brains involved might not hold up when a group faces a variety of factors, Princeton University researchers report. Instead, smaller groups actually tend to make more accurate decisions while larger assemblies may become excessively focused on only certain pieces of information. Credit Gabriel Miller Usage Restrictions None 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.