Can Inherited Autism Traits Skip a Generation in Family History? 

When it comes to autism and family history, a common question is whether autism traits can skip a generation. While there is no definitive answer, some research suggests that it is possible for inherited autism traits to be passed down through generations, sometimes skipping one along the way. 

How Autism Traits Can Skip a Generation 

Genetics play a significant role in the inheritance of autism traits. Autism is thought to be influenced by multiple genes, each contributing a small effect. In some families, these family traits can be passed down from one generation to the next, but they may not always manifest in every individual. This phenomenon of traits skipping generations occurs because some genetic predispositions might be dormant or not fully expressed in one generation, only to appear in the next. 

For instance, a grandparent might carry certain inherited autism traits that are passed on to their children, but the traits might not be noticeable in the child. The traits could then become more pronounced in the grandchild, due to the interaction of genetics and environmental factors. The expression of these traits may vary depending on how they are inherited and how the environment influences gene expression. Although the possibility exists for autism traits to skip a generation, it is not guaranteed. Family members with a history of autism may notice subtle signs in children or grandchildren, and earlier recognition can lead to more timely interventions and support. 

Visit providers like Autism Detect for personal consultations and to learn more about how autism traits might impact your family’s history. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to late diagnosis in adults.

Beatrice Holloway, MSc

Author

Beatrice Holloway is a clinical psychologist with a Master’s in Clinical Psychology and a BS in Applied Psychology. She specialises in CBT, psychological testing, and applied behaviour therapy, working with children with autism spectrum disorder (ASD), developmental delays, and learning disabilities, as well as adults with bipolar disorder, schizophrenia, anxiety, OCD, and substance use disorders. Holloway creates personalised treatment plans to support emotional regulation, social skills, and academic progress in children, and delivers evidence-based therapy to improve mental health and well-being across all ages.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.