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Are Boys More Likely to be Diagnosed than Girls?

Dear Kimberlie,

I’m a proud grandmother raising my adopted granddaughter, and I’ve been doing a lot of reading about autism. One thing I’ve noticed is that it seems more common in boys. Why is that? Are boys really more likely to be diagnosed with autism than girls, or is there something else going on? I want to make sure I’m looking out for my granddaughter and understanding her development as best as I can.

– Ms. Cameshia, Hampton, VA

dear mS. CameshiA,

What a wonderful advocate you are for your granddaughter! Your question touches on an important topic that has sparked much discussion and research in the autism community. While it’s true that boys are more frequently diagnosed with Autism Spectrum Disorder (ASD), the reasons behind this are nuanced and fascinating. Let’s take a closer look at why this is the case and what it means for understanding autism in all genders.

Autism and Diagnosis Rates
To start, you’re absolutely correct that autism is diagnosed more often in boys than in girls. In fact, current statistics suggest that boys are about four times more likely to receive an autism diagnosis. But does this mean boys are inherently more likely to have autism? Not necessarily.

This difference in diagnosis rates is influenced by several factors, including biological differences, societal perceptions, and the ways autism presents differently in boys and girls. Understanding these factors can help us better identify and support individuals on the spectrum, regardless of gender.

Biological Factors: Is Autism Really More Common in Boys?
Some researchers believe there may be biological reasons why autism is more common in boys. One theory, called the “extreme male brain” theory, suggests that autism may be linked to certain brain patterns that are more typical in males, such as a focus on systemizing (understanding systems and patterns) over empathizing (understanding emotions and social connections).

Another possibility is related to genetics. Studies show that girls may have a protective factor that makes them less likely to develop autism, even if they carry genetic mutations associated with the condition. However, this doesn’t mean girls can’t have autism—it may simply mean that the underlying biology can be different.

The Role of Societal Expectations and Bias
Society’s expectations for boys and girls also play a significant role in diagnosis rates. Boys are often expected to be more active and boisterous, so behaviors like repetitive movements or limited social interaction may stand out more when they occur. In contrast, girls are often encouraged to be nurturing and social, which can sometimes mask autistic traits.

For example, girls with autism might develop coping strategies, such as mimicking the behavior of their peers, to fit in socially. This is sometimes called “camouflaging” and can make their struggles less visible to teachers, doctors, and even family members.

In addition, diagnostic criteria for autism were historically based on studies of boys, which means that girls with autism may not fit the “classic” profile as easily. This can lead to under-diagnosis or misdiagnosis, with girls being labeled as shy, anxious, or struggling with other conditions instead.

How Autism Presents Differently in Girls
Ms. Cameshia, one of the reasons your question is so important is because girls with autism often look different from boys with autism. Understanding these differences can help ensure that all children receive the support they need.

Girls with autism may:
  • Have intense but socially acceptable interests, such as a deep fascination with animals, books, or celebrities.
  • Be quieter or more socially passive, which might lead others to see them as shy rather than recognizing their challenges.
  • Struggle with friendships but work hard to “blend in” by mimicking their peers’ behavior.

These differences can make it harder for parents, teachers, and even doctors to recognize autism in girls. It’s important to approach every child as an individual and consider the full range of behaviors they may exhibit.

What This Means for Your Granddaughter
As a grandmother, your attention to your granddaughter’s development is invaluable. While boys may be more commonly diagnosed, that doesn’t mean girls are unaffected—or less deserving of support. If you notice any behaviors in your granddaughter that seem unusual or if she seems to struggle with social connections, communication, or sensory sensitivities, trust your instincts and seek guidance from her pediatrician or a developmental specialist.

Remember, early intervention is key. Whether or not your granddaughter has autism, exploring her unique needs and strengths will help her thrive.

A Message of Empowerment
The idea that boys are more likely to have autism has shaped much of what we know about the condition, but we’re learning more every day about how autism manifests across genders. By asking questions and staying informed, you’re helping create a future where all children are seen, understood, and supported for who they are.

If you have more questions about your granddaughter’s development or want to learn more about autism in girls, don’t hesitate to reach out again. Your love and care are exactly what she needs to flourish.

Warmly,
Kimberlie

P.S. If you or any of your colleagues have any additional questions about autism, feel free to reach out to me via email at DearKimberlie@AppliedBehaviorAssociates.com. Let’s keep the conversation going. Together, we can and will make a difference!

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Your journey through autism is unique, and we’re here to walk it with you. If you have questions or need guidance, don’t hesitate to reach out. Submit your questions to DearKimberlie@AppliedBehaviorAssociates.com, and stay tuned for thoughtful blog posts packed with expert advice, practical strategies, and heartfelt encouragement.

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