Adaptive regulation over adversity: Noradrenergic scaling and psychological resources differentiate attentional...

Childhood adversity has been consistently associated with cognitive difficulties; however, marked heterogeneity in outcomes challenges deterministic models of risk. Emerging evidence suggests that current adaptive regulation may better explain cognitive and physiological functioning than adversity exposure alone.

To examine whether psychological risk-characterized by perceived stress, resilience, and protective factors-better predicts attentional performance and noradrenergic responsivity than childhood adversity exposure in individuals with high cumulative adversity.

Participants were recruited from a community population characterized by elevated psychosocial adversity, with 62% reporting four or more Adverse Childhood Experiences (ACEs). Five psychological measures (ACEs, perceived stress, resilience, protective factors, and emotional dysregulation) were integrated using Linear Discriminant Analysis (LDA) to derive a latent psychological profile dimension (LD1). Participants completed a visuospatial attentional task with increasing cognitive load while pupil diameter was recorded as an index of arousal-linked neuromodulatory engagement.

Despite comparable ACE exposure across groups (p > .05), LD1 significantly differentiated participants according to current psychological adaptation. Individuals in the high-resource group-characterized by lower perceived stress and higher resilience-showed significantly higher attentional performance under high cognitive load (p = .009, d = 0.89, 95% CI [0.25, 1.52]) and greater phasic pupil responses (p = .049, nonparametric permutation test, 10,000 permutations) than low-resource individuals. In contrast, ACE exposure alone did not significantly predict behavioral or physiological outcomes (d = 0.54, p = .109). These findings indicate that psychological adaptation accounted for substantially greater variance in attentional and physiological responses than adversity exposure itself.

Current adaptive psychological and physiological regulation, rather than childhood adversity exposure alone, appears to be a predominant factor of attentional functioning following adversity. Resilience-related processes may buffer vulnerability by preserving adaptive arousal responsivity under high cognitive demand.