Mood manipulation
After sign-up, the participant was instructed to bring at least three pieces of music (lasting for a minimum of 8 minutes) that made her happy and three pieces of music that made her sad (also totalling at least 8 minutes) with her to the lab. Participants were randomly assigned to either the neutral or negative condition. To induce a negative mood, the participant was asked to think of a sad event that happened to her. When she had something in mind, the sad songs chosen by the participant were played and she was given a blank sheet of paper and asked to write down that memory as detailed as possible. If she finished writing before the experimenter returned, she was instructed to keep thinking about the event she had written about. She was told that her memory would not be read by the experimenter. All stories were anonymously checked by an independent rater (A.J.) however, and this check confirmed that all participants had followed the instructions. In the neutral mood procedure, the participant was asked to write down the route she travelled from her home to the university library, and when she got there, which steps she would need to copy pages from a book.