ADOS 2 Manual

The Autism Diagnostic Observation Schedule - Second Edition (ADOS-2) is a semistructured, standardised assessment of communication, social interaction, play, and restricted and repetitive behaviours. By observing and coding these behaviours, clinicians can obtain information that informs diagnosis, intervention, treatment planning, and educational placement.

The ADOS-2 includes five modules, each requiring between 40-60 minutes to administer. The individual being evaluated is given only one module, selected on the basis of his or her expressive language level and chronological age:

1. Toddler Module-for children between 12 and 30 months of age who do not consistently use phrase speech
2. Module 1-for children 31 months and older who do not consistently use phrase speech
3. Module 2-for children of any age who use phrase speech but are not verbally fluent
4. Module 3-for verbally fluent children and young adolescents
5. Module 4-for verbally fluent older adolescents and adults

The ADOS-2 Manual contains two Parts:

1. Part I: Modules 1-4
2. Part II: Toddle Module

The Manual provides information on:

• Introduction to the ADOS-2
• Description and Uses of the Instrument
• Outline of materials
• Guidelines on selecting a Module
• Administering and Coding
• Individual sections on Module 1, 2, 3 and 4
• Scoring and Interpretation
• Development and Psychometrics
• Separate Toddle Module Section in Part II