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Adaptive Behavior Assessment System® Second Edition

Patti L. Harrison, Ph.D., & Thomas Oakland, Ph.D.

The ABAS-3 is now available. Learn more.


The ABAS-II provides you with a complete assessment of adaptive skills. It is the only instrument to incorporate current American Association on Mental Retardation (AAMR) guidelines by providing composite norms for three general areas of adaptive behavior (conceptual, social and practical).

The ABAS-II provides a comprehensive, norm-referenced assessment of the adaptive behavior and skills of individuals from birth to age 89. The test’s ease of administration and scoring, and wide age range have resulted in its widespread use for a large number of assessment purposes.
Scores for each area allow you to evaluate areas of functioning, determine strengths and weaknesses, and specify training goals.

The clinician can also use ABAS-II to evaluate those individuals with learning difficulties, Attention-Deficit/ Hyperactivity Disorder (ADHD), or other impairments related to motor, speech and language, hearing, and neuropsychological disorders. This test is also useful in determining how well the individual responds to daily demands from the environment. The ABAS-II can also be used to determine if adults can live independently.Back to the top

How to Use the Assessment
The instrument can be hand-scored using Parent/ Primary Caregiver Forms, Teacher/Daycare Provider Forms depending on age of the individual being tested. The ABAS-II can be scored using software. The ABAS II Intervention Planner and Scoring Assistant you can now identify the appropriate interventions and monitor progress. Benefits of the scoring Intervention Planner and Scoring Assistant include:

  • An Interpretive Report narrative based on all scores, strengths and weaknesses analysis, composite score discrepancy analysis, and overall summary of adaptive behavior (as found in the current Scoring Assistant) for all ages
  • Item-level interventions for those items chosen by the clinician for ages 0 to 17
  • A Progress Monitoring Report comparing raw and scaled scores across up to 4 assessments for ages 0 to 17 Back to the top

Scales & Forms

  • Conceptual
  • Practical
  • Community Use
  • Home Living 
  • Self-Care
  • Social
  • Functional Academics
  • Social
  • Community
  • Leisure
  • Health and Safety
  • Self-Direction
  • Work
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Patti L. Harrison, Ph.D.
Thomas Oakland, Ph.D.

Age Range Birth to 89 years

Administration Time 15 to 20 minutes

Administration Type Clinician-administered

Qualification Level B

  • Handscored
  • Software