Research study 10.1 dr. lonsbary is a cognitive psychologist who is curious about how mood affects memory. she recruited 60 high school students and divided them into three groups. group a listened to a five-minute piece of music intended to make them feel happy (a song titled "don't worry, be happy"). group b listened to a five-minute piece of music intended to make them feel sad (a song titled "alone again"). group c listened to no music and instead was asked to sit quietly for five minutes (thought to make them feel neutral). when a participant would come to her laboratory, dr. lonsbary would greet the participant and then ask him or her to draw a card. participants who drew a 1, 2, or 3 were assigned to group a. participants who drew a 4, 5, or 6, were assigned to group b. participants who drew a 7, 8, or 9, were assigned to group c. the participants were then given an unlabeled cd to listen to based on their group assignment. the cd contained either the song sele