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" In two recent studies assessing brain development, people age 25 to 40 came out on top as the most mature and aware demographic\u2014providing a good reason to turn that early mid-life crisis into a celebration. Interested in how and when a person&amp;#039;s brain reaches maturity, Dartmouth scientists tracked a group of freshman students. They noticed significant changes in areas of the brain that integrate emotion and cognition\u2014the region that informs how we navigate the world\u2014as compared to 20-something peers. Perhaps it comes as no surprise, but the research suggests 18-year-olds have a long way to go before reaching biological adulthood. In another study by scientists at The Rotman Research Institute at Baycrest and the University of Toronto, neurological changes that begin gradually around age 40 explained why older adults find it difficult to concentrate in busy environments and filter out irrelevant information. Using functional magnetic resonance imaging (fMRI), the scientists found that two regions in the brain&amp;#039;s frontal lobes\u2014associated with tasks that require concentration and those that don&amp;#039;t\u2014gradually shift into a seesaw-like imbalance. All of which means I better make the most of the next 15 years.\u2014Andrew Nusca "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/science/a463/2280591/>