Competing with peers and hiding personal information may seem like ordinary parts of adolescent life, but new research suggests both experiences place a significant and overlapping burden on the developing brain. The study, published in the Psychreg Journal of Psychology, examines how these two social pressures tax the same mental and emotional resources, with potentially serious consequences for young people’s well-being.
The research draws on neuroimaging evidence from EEG and fNIRS studies to show that social competition engages brain regions responsible for self-evaluation, selective attention, and reward processing. The prefrontal cortex and ventral striatum, both central to decision-making and impulse control, become especially active when adolescents are engaged in competitive situations. Because these regions are highly sensitive to social feedback, even minor competitive interactions can amplify emotional tension and cognitive strain.
Secrecy places similar demands on the brain. When individuals withhold personally meaningful information, the prefrontal cortex and amygdala both show increased activity, fuelling persistent mental preoccupation. This kind of rumination is cognitively draining and can distort how people interpret social situations, causing them to read neutral expressions or comments as threatening or judgemental.
What makes the findings particularly noteworthy is the degree of overlap between the two experiences. Both social competition stress and the psychological burden of secrecy deplete the same cognitive reserves, impair rational decision-making, and heighten demands on emotional regulation. When a person is managing both at once, as many teenagers frequently do, the cumulative effect on mental fatigue can be substantial.
Personality traits play a meaningful role in how severely individuals are affected. Those with higher levels of neuroticism tend to show increased activity in the anterior cingulate cortex, a brain region linked to error detection and emotional conflict monitoring. This heightened sensitivity can intensify both the anxiety associated with keeping secrets and the self-consciousness that accompanies competitive environments. Conversely, more extraverted individuals may regulate social complexity more effectively, reducing their overall vulnerability.
Friendship quality also emerges as an important factor. Young people with close, trusting relationships experience less psychological strain from secrecy, partly because strong social bonds appear to buffer the isolating effects of keeping things hidden. Those with fewer supportive connections, however, are more susceptible to rumination, loneliness, and distorted social perception.
The research carries clear implications for schools and other environments where adolescent mental health is a priority. Mindfulness programmes and cognitive reappraisal training are highlighted as practical tools for reducing evaluative strain and improving emotional regulation in competitive settings. Helping young people develop stronger self-awareness and more adaptive coping strategies could meaningfully reduce the mental health risks that arise when competition and secrecy combine.