Figure 2: Betsy's Friendship Network (IMAGE) Dartmouth College Caption Figure 2. Betsy's friendship network: A compartmentalizer. Credit Visuals created by Janice McCabe, Dartmouth College. Usage Restrictions None License Licensed 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.