Michigan State University Jul 14 2025 A new study led by Michigan State University found that as people get better at handling stress on a daily basis, they also become more extroverted, agreeable and open to new experiences over a nearly 20-year period. Likewise, the worse they manage daily stressors, the more introverted, unfriendly and closed off from new experiences they become. The study, published in Psychology and Aging , is the largest and longest study to look at how managing stress on