7 Factors Evaluated During a GARS Assessment
Navigating the world of autism assessments can feel overwhelming for any parent. The journey toward understanding your child's unique needs often involves various tools and evaluations. Early and accurate identification is crucial because it opens the door to tailored support that makes a significant difference in a child's development.
One of the key assessments professionals use is the Gilliam Autism Rating Scale (GARS). Understanding what this assessment evaluates can clarify the process, helping you feel more informed and empowered as you advocate for your child. Our guide will walk you through the seven factors evaluated during a GARS assessment, providing clarity on how this assessment contributes to a comprehensive evaluation.
What Is the GARS Assessment?
The Gilliam Autism Rating Scale (GARS) is a widely used screening tool that helps identify behaviors associated with Autism Spectrum Disorder (ASD). Clinicians, educators, and therapists use it to gain standardized, evidence-based insights into a child's strengths and challenges.
Caregivers, parents, or teachers who know the child well complete the GARS, making their observations essential to the process. While not a standalone diagnostic tool, professionals use the GARS alongside clinical observations and developmental histories to build a complete picture.
By measuring specific behaviors, the assessment helps determine the likelihood of autism and the level of support a child may need. It also informs you of the next steps of the process, such as further evaluations, developing a therapy plan, or creating an Individualized Education Plan (IEP).
Key Factors Evaluated in a GARS Assessment

The GARS systematically examines several key areas of a child's development and behavior. Each factor provides a piece of the puzzle, helping professionals understand the unique ways a child experiences the world. Here are the seven factors evaluated during a GARS assessment.
1. Restrictive and Repetitive Behaviors
One of the core characteristics of autism involves restrictive and repetitive behaviors. This factor looks at the presence, frequency, and intensity of these actions. Behaviors might include motor movements like hand-flapping or rocking, an insistence on routines, or arranging toys in a specific order. It could also manifest as an intense, highly focused interest in a particular topic.
The GARS measures how often these behaviors occur and how much they impact the child's daily functioning. Understanding these patterns provides significant insight into how a child regulates their sensory system and finds comfort when stimulated.
2. Social Interaction Skills
This section of the assessment focuses on how a child engages with others, including peers, caregivers, and unfamiliar adults. Evaluators look for patterns in social engagement, such as the use of eye contact, the ability to share enjoyment through joint attention, and participation in reciprocal play.
It also considers whether a child initiates social interactions or primarily responds to others. These social skills are essential markers in developmental screening because they reveal how a child connects with and understands the social world around them. The GARS helps quantify these observations, providing a clearer picture of a child’s social strengths and areas where they might need more support.
3. Communication Abilities
Communication is another critical factor, and the GARS considers both verbal and nonverbal skills. This evaluation goes beyond just spoken words to include the use of gestures, facial expressions, and vocal tone to convey meaning. It also assesses a child’s ability to engage in the natural back-and-forth of a conversation.
Challenges in either expressive language, which is the ability to communicate thoughts and feelings, or receptive language, the ability to understand others, are noted. By examining these areas, professionals can identify specific communication challenges and develop strategies to help the child express themselves more effectively.
4. Emotional Responses and Regulation
The GARS also evaluates how a child expresses and manages their emotions. This includes observing their reactions to changes in routines, transitions between activities, and unexpected events. A child might have intense emotional responses, sometimes called meltdowns, which can be triggered by feeling overwhelmed.
The assessment aims to understand these dysregulated responses not as negative behaviors but as signals that the child is struggling to cope with their environment. These insights help families and therapists identify triggers and develop strategies to support emotional regulation.
5. Cognitive Style and Development
This factor assesses a child’s unique way of thinking, processing information, and solving problems. It may look at patterns in their play, such as a preference for literal, concrete activities over imaginative or pretend play. It also considers their attention to detail, learning preferences, and how they approach new tasks. Understanding a child's cognitive profile is important because it highlights their strengths and helps create learning environments that align with how their brain works. This information allows educators to tailor their teaching methods to better support the child’s academic and personal growth.
6. Sensory Processing Considerations
Many autistic individuals experience the world through a different sensory lens. The GARS assessment explores a child's sensitivities to sounds, lights, textures, tastes, and movement. Some children may be sensory-avoiding, meaning they become overwhelmed by certain stimuli, while others may be sensory-seeking, actively looking for more intense sensory input. These sensory experiences can significantly impact a child's day-to-day functioning and ability to regulate their emotions.
Identifying these patterns is crucial for creating supportive environments that minimize sensory distress and promote well-being.
7. Developmental History and Background
A thorough evaluation always includes a comprehensive look at a child’s past. Parents and caregivers provide essential information about early developmental milestones, such as when the child first sat up, walked, and spoke. This history helps professionals identify any delays or unusual patterns that emerged over time.
Combining this information with direct observations and teacher input creates a comprehensive and reliable picture of the child’s development. It ensures that the assessment reflects the child's entire journey, not just a single snapshot in time.
How the GARS Assessment Is Administered

A trained professional, such as a school or clinical psychologist, typically administers the GARS in an educational or clinical setting. They give the rating scale to people who know the child well, usually parents and teachers, who then rate how often the child shows certain behaviors.
Honest, accurate responses are essential, as they shape the assessment’s outcome. Collaboration between families and professionals helps ensure the results reflect the child’s behavior across different settings.
What Happens After a GARS Assessment?
After completing the rating scales, the administrator scores them to produce standard scores, percentiles, and a possible severity level. These results suggest how closely the child’s profile aligns with characteristics of autism. It’s important to note that GARS is a screening tool—not a final diagnosis—and is just one part of a broader evaluation.
The results help guide next steps, such as creating an Individualized Education Program (IEP), recommending therapies like speech or occupational therapy, or referring for further evaluation. Parents are encouraged to ask questions and stay actively involved in planning their child’s support.
Families looking for support may consider professional autism services in North Carolina as part of a broader evaluation and care plan.
Understanding the GARS Leads to Better Outcomes
Understanding what an autism assessment like the GARS entails can transform a daunting process into an empowering one. When you know what is being evaluated, you can provide more accurate information and become a more effective advocate for your child.
Ultimately, early and accurate insights pave the way for effective intervention, leading to better outcomes and helping your child reach their full potential.





