An interview designed
for use with the parents of children or adults who are being assessed for an
autism spectrum diagnosis. The ADI comprises questions about the offspring’s
current skills and behaviours, as well as how these behaviours were manifested
at age four to five years or at any point during development. The original
version of the instrument (the ADI) was often used to verify diagnoses for
research purposes. The revised version, designed for diagnosis in clinical
settings, was published in 2003.