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Adaptive Behavior Assessment System, Third Edition

Patti L. Harrison, PhD, and Thomas Oakland, PhD

Assesses adaptive skills across the life span
Paper and pencil, Software
Age range:
Birth to 89 years
15-20 minutes
Qualification level:
A degree from an accredited 4-year college or university in psychology, counseling, speech-language pathology, or a closely related field plus satisfactory completion of coursework in test interpretation, psychometrics and measurement theory, educational statistics, or a closely related area; or license or certification from an agency that requires appropriate training and experience in the ethical and competent use of psychological tests. Close

Useful for diagnosing and classifying various developmental, learning, and behavioral disabilities and disorders; identifying your clients' strengths and weaknesses; and documenting and monitoring progress over time, the ABAS-3 provides a comprehensive norm-referenced assessment of adaptive skills in individuals ages birth-89 years.

Features and benefits

  • Retains all the essential features that made the second edition the preferred instrument but is even easier to administer and score.
  • Particularly useful for evaluating those with developmental delays, autism spectrum disorder, intellectual disability, learning disabilities, neuropsychological disorders, and sensory or physical impairments.
  • Integrates assessment, intervention planning, and progress monitoring.
  • Developed with American Association on Intellectual and Developmental Disabilities (AAIDD), DSM-5™, and IDEA standards in mind.

Test structure

  • Within three major adaptive domains (Conceptual, Social, and Practical), the ABAS-3 assesses 11 skill areas: communication, community use, functional academics, health and safety, home or school living, leisure, motor, self-care, self-direction, social, and work.
  • Items focus on practical, everyday activities required to function, meet environmental demands, care for oneself, and interact with others effectively and independently. On a 4-point response scale, raters indicate whether, and how frequently, the individual performs each activity.
  • A General Adaptive Composite (GAC) is produced.

Technical information

  • Norm-referenced scaled scores are provided for the 11 skill areas; for the three adaptive domains and the GAC, norm-referenced standard scores, confidence intervals for standard scores, and percentile ranks are provided. In addition, all scores can be categorized descriptively.
  • Norms are based on a large sample representative of the U.S. population.

Available in Spanish

Several ABAS-3 forms have been translated into U.S. Spanish: the Adult Forms, the School: Parent Forms, the School: Teacher Forms, the Infant and Preschool: Parent/Primary Caregiver Forms, and the Infant and Preschool: Teacher/Daycare Provider Forms. These products use English norms only.