tead, structural metrics like this one inform us about the functioning of the friendship network as opposed to a few adolescents in the network.
This study was an interesting application of structural metrics. Did the authors detail in their conclusions what their data showed about how aggression may be predictive of friendship selection? You mentioned a self report, do you think that an individuals own level of aggression may affect their friendship selections? In other words maybe those who are more aggressive group with others if higher aggression, vice versa.