Psychiatry · Medical Literature
A psychosocial manipulation of the error-related negativity does not transfer to the balance N1: A randomized controlled trial in anxious children.
Abstract
The error-related negativity (ERN) is a measurable brain response to mistakes that is thought to reflect a modifiable cognitive/emotional bias contributing to the development of anxiety disorders. We previously demonstrated that a psychosocial intervention to reduce error sensitivity can reduce the ERN among (nonclinical) adults and children who have relatively large ERNs. We have also demonstrated that a brain response (balance N1) evoked by a disturbance to standing balance shares the ERN's relationship to anxiety. We hypothesized that if ERN and N1 reflect the same underlying brain mechanisms, then an intervention to reduce the ERN should similarly reduce the balance N1. In this pre-registered randomized controlled trial, 54 children with anxiety disorders (age 9-12 years) were randomized into either a brief (45-min) single-session computerized psychosocial intervention to reduce error sensitivity, or a similarly formatted control condition. Primary outcome measures were changes in the ERN (measured in a Go/NoGo task) and balance N1 (measured in a lean-and-release balance task). The ERN was reduced after the psychosocial intervention, while the balance N1 remained unchanged. A brief computerized psychosocial intervention to reduce error sensitivity can reduce the ERN among clinically anxious children, but the limited effect may warrant a larger dosage. Discrepant outcomes between the ERN and balance N1 suggest the intervention targets mechanisms not shared between these brain responses. We speculate the intervention may have helped children manage overreactions to trivial mistakes while preserving the inherent significance of a loss of balance. CLINICAL TRIAL REGISTRATION: Computerized intervention targeting the error-related negativity and balance N1 in anxious children. https://clinicaltrials.gov/study/NCT05503017.
Clinical relevance
In children aged 9–12 years with diagnosed anxiety disorders, does a brief single-session computerized psychosocial intervention targeting error sensitivity reduce both the error-related negativity (ERN) and the balance N1, and does any ERN reduction transfer to the balance N1—thereby testing whether these two EEG biomarkers reflect a shared underlying neural mechanism? __SNAPSHOT__ {"studyDesign":"Pre-registered randomized controlled trial (RCT)","setting":"Not reported (laboratory-based EEG assessment; US academic research group inferred from author affiliations)","sampleSize":"n = 54 (intervention arm and control arm sizes not reported in abstract)","population":"Children aged 9–12 years with clinically diagnosed anxiety disorders","intervention":"Brief (45-minute) single-session computerized psychosocial intervention ('Treating the ERN'; TERN) targeting error sensitivity—covering concepts such as perfectionism, fear of social consequences of mistakes, and over-valuation of negative consequences of errors","comparator":"Similarly formatted active control condition (matched in duration and format to the intervention)","primaryOutcome":"Pre-to-post changes in (1) ERN amplitude measured during a Go/NoGo task, and (2) balance N1 amplitude measured during a lean-and-release balance perturbation task","followUp":"Acute/single-session (pre-to-post intervention); longer-term follow-up not reported","fundingSource":"Not reported"}
Key findings
The primary outcomes yielded a dissociated pattern: the psychosocial intervention reduced ERN amplitude relative to the control condition, replicating prior findings from this research group in nonclinical adults and children. However, the balance N1—evoked by a standardized lean-and-release perturbation to standing balance—was unchanged by the intervention in either direction. Specific effect sizes, confidence intervals, and p-values for both the ERN reduction and the null balance N1 result are not reported in the abstract. The magnitude of the ERN reduction and the precise group-level N1 values are therefore not calculable from available data. No adverse events are reported. The study does not report whether the ERN reduction observed correlated with self-reported error sensitivity or anxiety symptom change.
Practice implications
This pre-registered RCT established two findings: (1) a brief, manualized computerized psychosocial intervention can reduce the ERN in clinically anxious children aged 9–12, extending prior demonstrations in nonclinical samples; and (2) this ERN reduction did not generalize to the balance N1, the primary mechanistic claim under test. The null result for the balance N1 is the critical and informative negative finding: it challenges the hypothesis that the ERN and balance N1 reflect fully shared neural mechanisms responsive to the same psychological manipulations. The ERN and balance N1 may share some structural or correlational features across individuals (as shown in prior cross-sectional work) without sharing the same modifiability by cognitively-framed error-sensitivity interventions. Clinically, the ERN reduction is of uncertain translational significance: whether reducing the ERN in a single session durably reduces anxiety risk—the ultimate therapeutic rationale—was not tested here. The study population (ages 9–12, clinically anxious) represents a meaningful clinical target, but generalizability to different age groups, comorbid presentations, or longer-term outcomes is untested. Because only an abstract is available, the robustness of the findings, the analytic approach, handling of missing data, and arm-level effect sizes cannot be fully evaluated. __LIMITATIONS__ Small sample size (n = 54 total), limiting statistical power especially for subgroup analyses and for detecting modest treatment-by-baseline interactions,Only abstract is available; full statistical reporting (effect sizes, confidence intervals, p-values for both primary outcomes) cannot be verified,Single acute session with no reported long-term follow-up: durability of ERN reduction and clinical translation to anxiety outcomes are unknown,Arm-level sample sizes not reported, precluding assessment of allocation balance,The intervention mechanism (error sensitivity reduction) was not confirmed by self-report or behavioral data in the abstract; it is unclear whether the ERN change reflects genuine target engagement or a non-specific effect,The balance N1 null result may reflect insufficient power, a floor/ceiling effect, or domain-specificity of the intervention rather than true mechanistic independence—these cannot be distinguished from the abstract alone,Blinding of participants to condition assignment is not described; the active control condition's adequacy as a credible comparator is not characterized,Generalizability is limited to anxiety-disordered children 9–12 years old; findings may not apply to nonclinical populations, adolescents, or adults,Funding source and potential conflicts of interest are not reported __BOTTOM_LINE_CATEGORY__ promising_but_preliminary __BOTTOM_LINE__ This pre-registered RCT in clinically anxious 9–12-year-olds demonstrated that a brief 45-minute computerized error-sensitivity intervention reduced the ERN but had no effect on the balance N1, providing evidence against the hypothesis that these two ERP biomarkers are fully modulated by the same psychological mechanisms. The ERN reduction is consistent with prior work but remains of uncertain clinical significance in the absence of downstream anxiety outcome data. These findings are mechanistically informative but do not yet support a change in clinical practice regarding anxiety assessment or intervention protocols.