Author

E. Kocak

3 papers indexed here

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Open access Sep 2026

Resting-state brain age is associated with cognitive and sensorimotor abnormalities in schizophrenia spectrum disorders: a validation & longitudinal study

Brain-age models use neuroimaging features to predict chronological age. The resulting brain-age gap (BAG), defined as predicted brain age minus chronological age, quantifies deviations from age-expected brain characteristics. Structural brain-age acceleration is well established in schizophrenia spectrum disorders (SS...

S. Volkmer, S. Fritze, D. Altinok et al. · Translational Psychiatry · 0 citations

Open access Aug 2026

Personality variability during development predicts alcohol use before and during the COVID-19 pandemic

Changes in personality during adolescence may shape future alcohol use, especially in times of societal crisis. The COVID-19 pandemic disrupted social norms and stress regulation, making it a natural experiment to examine how early-life personality trajectories predict later substance use. Using longitudinal data from...

Rabia Zohair, K. Janson, Sebastian Siehl et al. · Scientific Reports · 0 citations

Open access Aug 2026

A longitudinal daily diary study of stress, self-esteem fluctuation, and mood variability in adolescents

Adolescence represents a developmental phase marked by profound and rapidly shifting emotional states. While some adolescents exhibit pronounced, day-to-day mood variability, others remain comparatively stable. Although emotional fluctuation has long been considered a core feature with implications for health and well-...

C. Borzikowsky, M. Prignitz, Stella Guldner et al. · Scientific Reports · 0 citations