After a screening is done, an individual diagnosis must be made. This involves a one-on-one evaluation which may last two hours or more. If an individual has been referred for testing, either by a doctor, teacher, or other professional, the screening process is skipped and testing starts here. This session allows the SLP to gather information that will help in the diagnosis of a speech or language problem, as well as provide insight to possible causes, goals and objectives for therapy, and which techniques will work best for that individual. Individual evaluations often include the following components: