Diagnostic Evaluation Process

A comprehensive, gold standard assessment that sees your child fully.

Our evaluations are conducted by specialist clinical pediatric psychologists using the most rigorous, evidence-based tools in the field. Here’s exactly what that looks like and why it matters.

A clinical psychologist working with a child during an autism diagnostic evaluation at ANNA

Tools The ADOS-2: The gold standard in autism assessment

The Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) is the most widely used and rigorously validated tool for autism assessment in the world. It is considered the gold standard by researchers and clinicians alike, and it is the centerpiece of every diagnostic evaluation at ANNA.

About the ADOS-2 Assessment

During the assessment, your child’s clinician creates naturalistic play and social interaction opportunities and carefully observes how your child communicates, plays, and connects. It is designed to feel like a warm, engaging interaction for your child, not a test.

We believe

The ADOS-2 features modules designed for various ages and developmental stages, ensuring your child’s assessment is always suitable for their current level.

Evaluation

A comprehensive battery, not a single tool

At ANNA, the ADOS-2 is just one part of a thorough evaluation. We believe that no single tool can provide the full picture. To understand your child, we assess various developmental dimensions from different perspectives and sources. Examples of tools that may be used include:

Under 2 Years

  • Bayley Scales of Infant and Toddler Development, 4th Edition (Bayley-4)
  • Autism Diagnostic Observation Schedule-2 (ADOS-2)
  • Child Behavior Checklist
  • Vineland Adaptive Behavior Scales, Third Edition
  • Developmental Profile-4

Ages 2 to 4

  • Bayley Scales of Infant and Toddler Development, 4th Edition (Bayley-4)
  • Autism Diagnostic Observation Schedule-2 (ADOS-2)
  • Behavior Assessment System for Children-3 (BASC-3)
  • Vineland Adaptive Behavior Scales, Third Edition
  • Developmental Profile-4
  • Autism Spectrum Rating Scales

Ages 4 and Above

  • Differential Ability Scales, Second Edition (DAS-2)
  • Autism Diagnostic Observation Schedule-2 (ADOS-2)
  • Behavior Assessment System for Children-3 (BASC-3)
  • Vineland Adaptive Behavior Scales, Third Edition
  • Developmental Profile-4
  • Autism Spectrum Rating Scales

The Process

How the evaluation process works

The evaluation is paced around your child. We follow their energy, their comfort level, and their needs throughout.

Coverage

Diagnostic evaluations are covered
by most
major insurance plans

ANNA is in-network with most commercial and MassHealth plans. Your Care Coordinator handles all insurance verification and authorization before your first appointment.

Logos of in-network insurance providers we accept

Evaluations are conducted at ANNA’s centers in Wayland, Sudbury, Weston, Braintree, and Woburn.

Get in Touch

Definitions

What each tool is measuring

Feel free to reach out to us at if you have any further questions. We’re here to assist you!

  • Bayley Scales of Infant and Toddler Development-4 (Bayley-4)

    Comprehensive assessment of infant and toddler development across five scales: Cognitive, Language, Motor, Social–Emotional, and Adaptive Behavior. Used to identify developmental delays, monitor progress, and build a full developmental profile.

  • Differential Ability Scales, Second Edition

    A cognitive ability assessment for older children that measures verbal and nonverbal reasoning, spatial ability, and processing speed. Helps us understand how your child thinks and learns.

  • Autism Diagnostic Observation Schedule-2 (ADOS-2)

    The gold-standard observational assessment for autism, conducted directly with your child through structured play and social interaction. The foundation of our diagnostic process.

  • Behavior Assessment System for Children-3 (BASC-3)

    A comprehensive assessment of behavioral and emotional functioning, completed by both parents and teachers where applicable. Captures how your child is experiencing and navigating their world across different settings.

  • Vineland Adaptive Behavior Scales, Third Edition

    Measures your child’s adaptive functioning across communication, daily living skills, socialization, and motor skills. Tells us how your child is applying their abilities in real-world situations.

  • Developmental Profile-4

    A comprehensive developmental assessment covering physical, adaptive, social and emotional, cognitive, and communication domains. Provides a broad picture of your child’s overall development.

  • Autism Spectrum Rating Scale, Second Edition (ASRS)

    A parent-completed measure of social communication skills, focused interests, and repetitive behaviors. Gives us insight into how your child experiences social connection.

Not sure if your child needs a full evaluation?

If you’re earlier in the process and wondering whether your child’s development warrants a closer look, an autism screening may be a helpful and low-pressure first step. Screenings are brief tools that help identify whether a full diagnostic evaluation makes sense for your child.