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.
Hubo un estudio que me gustó en especial en el que se le pide a un grupo de personas deprimidas y a otro de personas no deprimidas que jueguen una hora a un videojuego. Transcurrida la hora, les preguntaban cuántos monstruitos pensaban que habían matado.