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What does ADOS-2 stand for?
the Autism Diagnostic Observation Schedule
What are the 5 modules in the ADOS-2?
toddler module: 12m-30m (level of concern)
module 1: ‘pre-verbal/single words’ (31m and up)
module 2: ‘phrase speech’ (any age)
module 3: ‘fluent speech’ (child/adolescent)
module 4: ‘fluent speech’ (adolescent/adult)
(administrators pick one module based on language but can switch to another if appropriate)
What is the core test structure of the ADOS-2?
1) social communication (e.g., initiating interaction, sharing enjoyment, facial expressions)
2) social reciprocity (e.g., back and forth convo, interest in administrator, rapport development)
3) imagination (e.g., pretend play, storytelling, symbolic use of objects)
4) restricted/repetitive behaviours (e.g., repetitive speech, atypical sensory interests, fixated interests, stereotypes movements)
How is the ADOS-2 coded?
observations themselves contain qualitative notes
coding requires ratings based on participant’s behaviour throughout entire test
How is the ADOS-2 scored?
convert item codes to ADOS-2 module specific algorithm scores
What are the possible classifications in the ADOS-2?
‘autism’ - observed behaviour meets criteria suggestive of autism
‘autism-spectrum’ - traits are present and clinically relevant, presentations less pronounced or does not meet full algorithm threshold for ‘autism’
‘non-spectrum’ - did not elicit sufficient autism-consistent behaviours to meet threshold
What does ADI-R stand for?
the Autism Diagnostic Interview - Revised
What is the structure of the ADI-R?
93 questions
semi-structured interview with parents/caregivers (known since childhood)
What are the 3 main areas covered in the ADI-R?
language + communication: evaluating verbal and non-verbal communication skills
reciprocal social interactions: assessing social behaviours and relationships, including ability to form peer relationships and respond to social interactions
restricted, repetitive, and stereotyped behaviours and interests: identifying repetitive behaviours, routines, and restricted interests typical in autistic individuals