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Author

Gretchen R. Perhamus

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Open access Jul 2026

Early trauma exposure moderates associations between cortisol reactivity and youth anxiety and externalizing symptoms.

Early (before age 6) potentially traumatic events (PTEs) may interact with hypothalamic-pituitary-adrenal (HPA) axis functioning to shape outcomes involving externalizing problems and anxiety. However, directions of effects remain unclear. This study examined associations between aspects of HPA axis reactivity, anxiety...

Gretchen R. Perhamus, Rachel E. Siciliano, Tiffany Phu et al. · 0 citations
Aug 2026

The interactive role of physiological reactivity and victimization responses on internalizing symptoms in early childhood.

The present short-term longitudinal study examined the associations between preschoolers' coping responses to their personal experience of peer victimization and later internalizing symptoms. This study prospectively tested autonomic nervous system reactivity (i.e., respiratory sinus arrhythmia reactivity, RSA-R; and s...

Katy M Gardner, Jamie M. Ostrov, Gretchen R. Perhamus et al. · 0 citations

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