Sessions with adolescents usually last between 60 and 90 minutes. They may be extended, however, and even include minimarathons lasting all day (Corey et al.. 2010). Task/work groups that are charged with completing an assignment, such as decorating for a social event or coordinating a teen walkathon for funding cancer research, may especially benefit from longer group meetings. However, longer is not necessarily better, and a p for adolescents that lasts more than 90 minutes probably will not be productive