Social Loafing Quality

This student project attempts to provide an example of social loafing. Three friends decide to make a snack.

Two of the girls are working hard to finish the dessert while the third girl stirs and texts at the same time. Two of the girls continue to finish preparing the dessert for the oven as the other chats on the phone. At the end, one student explains who the free rider was. What has research shown about working alone versus working in a group? When do we work harder?