Workshop attendees are typically professionals who will be qualified to use the ADOS-2 in practice – that is, professionals who, prior to the workshop, have education, training and experience in using individually administered test batteries and who have a background and experience in the treatment of autism spectrum disorders. Some examples of clinicians who have a professional mandate to treat autism spectrum disorders and who make use of the ADOS-2 in their daily work are clinical and school psychologists, psychiatrists, occupational therapists, and speech and hearing professionals. In some cases, schools and clinics will send additional staff to a workshop with a view that a better understanding of the instrument will help their teachers, counselors, special educators, or other program staff make better use of reports based on ADOS-2 results. Note that in all cases, however, simple attendance at the workshop is not sufficient to ensure competent use of the ADOS-2.