Dardo Tomasi and Nora Volkow of the National Institute on Alcohol Abuse and Alcoholism studied brain scans of 8,961 children aged 9-11, recorded from August 2017 to November 2018.
Boys are more likely than girls to develop addictions because of slower brain development starting at age 9, two scientists from the National Institutes of Health found in aDardo Tomasi and Nora Volkow of the National Institute on Alcohol Abuse and Alcoholism studied brain scans of 8,961 children ages 9-11, recorded from August 2017 to November 2018.
“Boys are much more likely to engage in risky behaviors such as drug experimentation than girls and are more prone to impulsive behaviors, including truancy [or] driving while intoxicated,” Ms. Volkow told The Washington Times. “It is likely that this vulnerability reflects in part the slower development of brain regions necessary for self-regulation.”
White matter consists of nerve fibers linking different parts of the brain. Gray matter comprises cell bodies responsible for perceiving movement and sensation. The study found that boys lagged behind girls in developing the cognitive processes for language and analytical thinking, as well as the emotional maturity for self-reflection and self-regulation.
“It is important to keep in mind that brain development is a dynamic biological process which plays out over the first two decades of life,” said Mr. Van Horn, who researches brain functions. “So it would be difficult to say for certain that any changes during this time are an accurate reflection of the entire trajectory of brain maturation, which plays out well into young adulthood.”
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