Eveline Crone discovered that not every part of the human brain develops at the same time. In puberty brain centers determining emotions develop more quickly than those which control rational decision making. This helps explain unrestrained, irresponsible and risky adolescent behaviour. How does the adolescent brain use this turbulent phase to learn to take creative but balanced decisions? Eveline Crone is a Social Sciences laureate of the Ammodo KNAW Award 2017.