This half-day workshop will be an open discussion session designed to help participants start posing and addressing research questions in their own areas that could be answered using latent class/profile/transition analysis, and to help participants get up and running fitting latent class/profile/transition models to their own data. This will be a free-flowing discussion and question-and-answer session. Participants who register for this workshop will be contacted in advance and a few may be selected to lead a discussion about their ideas. Participants should come prepared with questions and ready for an interactive session.