Useful for diagnosing autism, planning treatment, and distinguishing autism from other developmental disorders. The interview covers the referred individual’the diagnostic program children of early age full developmental history, is usually conducted in an office, home or other quiet setting by a psychologist, and generally takes one to two hours.
The caregivers are asked 93 questions, spanning the three main behavioral areas, about either the individual’s current behavior or behavior at a certain point in time. The first section of the interview is used to assess the quality of social interaction and includes questions about emotional sharing, offering and seeking comfort, social smiling, and responding to other children. The communication and language behavioral section investigates stereotyped utterances, pronoun reversal, and social usage of language. After the interview is completed, the interviewer determines a rating score for each question based on their evaluation of the caregiver’s response. A total score is then calculated for each of the interview’s content areas.
When applying the algorithm, a score of 3 drops to 2 and a score of 7, 8, or 9 drops to 0 because these scores do not indicate autistic behaviors and, therefore, should not be factored into the totals. Extensive training and knowledge about autism spectrum disorder and the ADI-R is required for both conducting and scoring the interview. Training usually takes 2 or more months to complete depending on the person’s clinical experience and interviewing skills. The original version of the Autism Diagnostic Interview, written in 1989, was used mainly for research purposes. The writers’ main goals in revising the ADI were to make the interview more efficient, shorter, and more appropriate for younger children. The majority of the revisions made involved the organization of the interview.
The questions were divided into five distinct sections and early and current behavior were consolidated in each section. Research led to some modifications of specific interview questions. Questions from the original version of the ADI that were found, through research, to be unreliable or not applicable were removed when the interview was revised. The writers have published psychometric results that indicate both reliability and validity of the ADI-R. Both inter-rater reliability and internal consistency were good across all behavioral areas investigated in the interview. The interview was also found to have adequate reliability across time. It parallels the ADI-R in content and is used for brief screening to determine the need to conduct a full ADI-R interview.
It is a semi-structured set of observations and is conducted in an office setting as a series of activities involving the referred individual and a psychologist or other trained and licensed examiner. 5, 2009, from Autism Genetic Resource Exchange, Los Angeles, CA. Autism diagnostic interview-revised: A revised version of a diagnostic interview for caregivers of individuals with possible pervasive developmental disorders. Communication Disorders Research Center, Ann Arbor, MI. Autism diagnostic interview: A standardized investigator-based instrument. Autism Diagnostic Interview-Revised: a revised version of a diagnostic interview for caregivers of individuals with possible pervasive developmental disorders”.