There was a study I particularly liked in which a group of depressed and a group of non-depressed people were asked to play a video game for an hour, and at the end of the hour, they were asked how many little monsters they thought they had killed.
Pidin erityisesti eräästä tutkimuksesta, jossa masentuneita ja ei-masentuneita ihmisiä pyydettiin pelaamaan videopeliä tunnin ajan, ja pelin päätyttyä heiltä kysyttiin, kuinka monta pikku hirviötä he uskoivat tappaneensa.