[9][10] Researchers and clinicians affiliated with AAIDD provided input to the development of the World Health Organization's (WHO) International Classification of Diseases, 11th Revision (ICD-11) behavioral indicators that could be used to guide clinical judgement in determining the presence and severity of deficits in intellectual functioning and adaptive behavior for the purpose of making a diagnosis of disorders of intellectual development when standardized assessments are not available or feasible.

The AAIDD encourages a diversity of contributions from different traditions of inquiry and disciplines;[13] all papers must meet the journals' criteria for rigor and peer review to be considered for publication.

The SIS measures support needs in multiple areas of daily life, including standardized subscales in home living, community living, health and safety, learning, work, advocacy, and social activities and additional scales addressing exceptional medical and behavioral support needs.

The individual's overall Supports Intensity Profile is generated based on their subscale Standard Scores, which are indexed and percentile ranked.

The association's YouTube channel provides short educational videos on topics related to intellectual and developmental disabilities.