Authors: Matti Cervin · Research

How Do Children With ADHD and Autism Develop Differently From Their Peers?

A large study examines developmental patterns in children with ADHD and autism to help improve early identification and understanding.

Source: Cervin, M. (2022). Developmental signs of ADHD and autism: a prospective investigation in 3623 children. European Child & Adolescent Psychiatry, 32, 1969-1978. https://doi.org/10.1007/s00787-022-02024-4

What you need to know

  • Children with ADHD and autism show various developmental differences from their peers, but these differences are often subtle and overlap with typical development
  • No single developmental sign or combination of signs can reliably predict whether a child will develop ADHD or autism
  • Developmental differences are common - even children without ADHD or autism show some atypical development patterns

Understanding Development in ADHD and Autism

As parents, we often wonder if our children are developing typically. When should they start talking? How should they interact with other kids? What behaviors might signal a potential concern? These questions become even more pressing when considering conditions like ADHD and autism, which affect millions of children worldwide.

A groundbreaking study followed over 3,600 children from birth to age 15, tracking hundreds of developmental signs to better understand how children with ADHD and autism develop differently from their peers. The findings challenge some common assumptions while providing valuable insights for families and healthcare providers.

Key Developmental Patterns

The study found that children who later received ADHD or autism diagnoses showed differences across many areas of development. For ADHD, signs related to attention, impulsivity, and hyperactivity emerged as early as age 3. Children who developed autism often showed differences in how they interacted with peers - they were less likely to join others in play and sometimes displayed challenging social behaviors.

However, one of the most striking findings was that these differences weren’t clear-cut or exclusive to children with these conditions. Many typically developing children showed similar patterns at various points in their development.

The Challenge of Early Identification

While the research identified numerous developmental differences, no single sign or combination of signs could reliably predict which children would later be diagnosed with ADHD or autism. When researchers tried to use early developmental information to predict later diagnoses, they often identified many “false positives” - children who showed concerning signs but didn’t ultimately receive a diagnosis.

This highlights an important reality: child development isn’t a straight line. It’s more like a winding path with various detours and temporary stops along the way.

Complex Patterns in Combined ADHD and Autism

The study found that children who had both ADHD and autism showed the most pronounced developmental differences. These children demonstrated more frequent and severe challenges across various areas compared to children with either condition alone. This suggests that having both conditions creates unique developmental challenges that deserve special attention and support.

What This Means for You

If you’re a parent concerned about your child’s development, these findings offer several important takeaways:

  1. Developmental differences are common - even among children without ADHD or autism
  2. No single behavior or developmental delay definitively indicates ADHD or autism
  3. Focus on supporting your child’s current needs rather than trying to predict future diagnoses
  4. Regular check-ins with healthcare providers can help monitor development over time
  5. Trust your instincts, but also understand that development varies widely among children

Conclusions

  • Child development is highly variable, and developmental differences don’t automatically indicate a disorder
  • While children with ADHD and autism often show early signs, these signs overlap significantly with typical development
  • The most effective approach is ongoing monitoring and support rather than trying to predict future diagnoses based on early signs
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