&quot;At about age 22 or 23, the brain is pretty much done developing, according to Steinberg, who studies adolescence and brain development.&quot;<p>&quot;Adult plasticity still allows for modifications to the brain, but at that point, the neural structures aren’t going to change.&quot;<p>The above changes to neuroplasticity really hit me hard when I restarted college in my 30s.<p>Despite &quot;passing&quot; for a 20some student, I realized I learned differently than my younger colleagues.<p>I had to rely on association with my previous knowledge quite a bit more.<p>Learning something completely new became near impossible hill to climb.