S Chellappan took a bit of a different tact when he looked at internet usage via network stats, then compared that to where his users fell on a depressive scale. He found that there were different patterns for those ranked higher in depression. 1
The paper interpreted the stats as showing depressed students had:
- More video and gaming use.
- More switching between applications.
- Greater peer to peer file sharing.
- Greater chatting.
- More email usage, including merely checking for messages.