Ryan’s PhD research focuses on the relationship between dimensions of early childhood adversity, trajectories of brain development, and the emergence of mental health problems in adolescence. Specifically, the developmental underpinnings of anhedonia - a transdiagnostic symptom characterised by a loss of ability to respond to, learn about, and value rewards. To address these questions, he uses large longitudinal neuroimaging datasets to map trajectories of structural and functional brain development in relation to early adversity and reward-processing deficits.

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