Networks (IMAGE) Aalto University Caption This shows networks created by phone calls (blue) made by participants in the study (yellow) and the bonds of friendship between the participants (red) in the first half of the investigation period. Credit Aalto University 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.