Teenagers ’ brains process risk differently when Mum is around

By Christian Jarrett The traffic lights turn amber: should you brake or accelerate on through? If there’s a teenager at the wheel, the chances are he or she will put their foot down and keep going. Teenagers love taking risks, more so than any other age group. This is partly down to the immaturity of the teen brain: they do not yet show the same connectivity between frontal decision making areas and deeper reward-related brain areas, as compared with adults. But there’s also a social element. When an adult is around, teens tend to take fewer risks, and their brains show less reward-related activity after taking a risk, a phenomenon that psychologists call “social scaffolding” because it is as if the adult presence is helping the teen to attain adult-like behaviour. A new study in Developmental Science builds on these findings and makes the claim that a teenager’s brain is influenced to a greater extent by the presence of his or her mother than by an unfamiliar adult.  João Moreira and his colleagues scanned the brains of 23 15-year-olds (9 girls) while they played a risk-based game that involved going through a set of 26 traffic lights as quickly as possible and deciding at each set whether to accelerate or brake as the lights turned amber. Accelerating saved time usually, but also carried the risk of a crash which would lead to a greater delay than braking. The teens played the game twice: once i...
Source: BPS RESEARCH DIGEST - Category: Psychiatry & Psychology Authors: Tags: Brain Cognition Developmental Source Type: blogs

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