Smith College Alum Dr. Frances Jensen ’78 Explores the Science of the Adolescent Brain

On Thursday, March 12, Smith College President Sarah Willie-LeBreton welcomed to campus Dr. Frances Jensen ’78—renowned neuroscientist and best-selling author of The Teenage Brain—for a conversation on the latest research into adolescent and young adult brain development.

Speaking to an engaged audience, Jensen reflected on how her fascination with the human brain began during her time at Smith, where she studied neuropsychology. That early curiosity, she said, set her on the path to a distinguished career in brain research and neurology.

“I’m excited to tell you a little bit about the really amazing science that’s going on in this field,” Jensen told the audience. “Brain science is basically the final frontier for biomedicine right now.”

During her hour-long talk, Jensen drew on decades of research and a wide range of scientific studies to explain how the brain continues to develop through adolescence and into the mid to late 20s. In particular, she highlighted the remarkable plasticity of the frontal lobe—the region responsible for decision-making, impulse control, and long-term planning—which remains under construction well into young adulthood.

Jensen also discussed how this ongoing development shapes the behavior of adolescents and their vulnerability to outside influences. Because the brain is still maturing, she explained, young people can be more susceptible to the effects of substances, social media, and trauma. At the same time, that same plasticity offers a reason for optimism: Adolescents often respond more successfully to treatment and early interventions than adults do.

Before joining President Willie-LeBreton for a question-and-answer session, Jensen emphasized several practical ways to support brain health, including prioritizing sleep, practicing meditation, and spending time in natural environments. She also stressed the importance of individualized educational approaches and supportive environments that recognize the unique developmental stages young people are navigating.

In thanking Jensen for sharing her insights, President Willie-LeBreton noted that good science “can make our lives better.” Jensen, in turn, offered a reminder of the brain’s remarkable adaptability in a rapidly changing world.

“Our brain is changing on a millisecond-by-millisecond basis,” she said, “constantly adapting to keep up with the world around us.”