HB Field
The first years of life (0–6) represent a critical window of brain development. During this period, the brain demonstrates remarkable plasticity, meaning it is especially capable of forming and strengthening new connections. Interventions introduced during these years are more likely to result in lasting improvements in communication, learning, and social functioning. Starting therapy early takes advantage of this “window of opportunity.” Studies show children who begin ABA before age 3—or earlier—make the most progress.
When a child is diagnosed with Autism Spectrum Disorder (ASD), parents often feel overwhelmed with questions about what to do next. One of the most important decisions a family faces is when to begin therapy. Research and decades of experience have shown that starting therapeutic services of Applied Behavior Analysis (ABA), Speech and Occupational Therapy as early as possible—ideally right after a diagnosis—can make a profound difference in a child’s growth, development, and long-term success. In this article, we will focus on early intervention with ABA Therapy, and understanding development of skills is not a linear process.
The increasing prevalence rates in autism diagnoses during recent years has enhanced the establishment of a variety of interventions for young children with ASD. The scientific research consistently shows that beginning ABA therapy as early as possible—ideally right after diagnosis—leads to the most meaningful progress.
The early years of a child’s life are a critical period for learning. Between birth and age six, the brain is highly adaptable and capable of forming new connections at a remarkable pace. This means that skills introduced during this window—whether communication, social interaction, or daily living skills—are more easily learned and retained. For children with autism, early intervention can:
In synthesis: Early ABA Therapy increases the likelihood that children will develop meaningful communication methods—whether through speech, sign language, or augmentative systems—and sets the stage for long-term quality of life for both children and their families.
Multiple scientific studies have found that children who begin ABA therapy early show greater progress compared to those who start later. They are more likely to enter school more prepared to learn, adapt more easily to classroom routines, and may even require fewer support services as they grow older.
Delaying therapy, on the other hand, means missing out on valuable therapeutic time when children are most receptive to learning. Even a few months of waiting can make a difference in how quickly a child develops essential skills. Every month of delay means missed opportunities for growth. Because foundational skills such as imitation, play, and joint attention are easiest to learn at younger ages, waiting to start services often results in slower progress and more intensive needs later on.
Starting ABA therapy early doesn’t just help children—it also supports parents. ABA programs include parent training, where families learn strategies to support the child at home and in everyday life.
Working together with therapists gives the child the best chance for success, because having professional guidance early on can reduce stress and build confidence in parenting a child with autism.
Taking the First Step: Hearing the words “autism diagnosis” can feel overwhelming, but taking action quickly can set your child on a path to success. If your child has been diagnosed, reach out to an ABA provider right away to begin the process of assessment and therapy. The sooner your child starts, the sooner they can begin building the skills needed to thrive.
The evidence is clear: Starting ABA Therapy as soon as a child is diagnosed with autism gives them the best chance to learn, grow, and thrive. Early intervention is not just helpful—it’s life changing. Early intensive behavioral intervention maximizes brain development, builds essential communication and social skills, reduces challenging behaviors, and sets the foundation for long-term independence.
For parents, the message is simple but powerful: don’t wait. The earlier your child begins ABA, the greater their potential for growth, learning, and success.
By Nia Berrian, M.S; BCBA
