What makes somthing simple or complex to process and complete? The answer is the Discourse Context. The 30 page manual teaches you how to analyze the complexity of the organization in an event, oral language, or written language. The emphasis is on expository discourse (see the Storyboard Manual for an emphasis on Narrative discourse), although both are covered in this manual. The 10 SDS Discourse levels can be used developmentally but also descriptively for any age or event. Use these levels to establish goals and measure progress.