Read the excerpt from a science journal.Scientists believe that there is a communal aspect to laughter, even when that laughter is artificial. Research suggests that people laugh more commonly when they watch sitcoms with a laugh track (a prerecorded clip of audience laughter that is played after a character makes a funny statement) than when watching a sitcom without one. While this may suggest that people need cues for humor, research suggests that people are also more laughter-prone when spending time with individuals than when spending time solo (Rogers).