Program

Researcher degrees of freedom and small sample sizes pose significant challenges to replicability in personality neuroscience. The CoScience EEG-Personality Project tackles these issues through an unprecedented large-scale, multi-laboratory effort (N ~ 800), bringing together ten research teams across Germany. All hypotheses were pre-registered and discussed in large collaborative teams to foster transparency and consensus building. To further enhance methodological rigor, the project employs cooperative forking path analysis (cFPA), a novel approach to systematically evaluate EEG preprocessing pipelines while limiting researchers’ degrees of freedom. This symposium will present first results from four subprojects, share insights from this multi-site EEG collaboration, and discuss both the challenges and opportunities of large-scale, consensus-driven research.

First, Katharina Paul will examine the Late Positive Potential in response to erotic images (same- and opposite-sex individuals), while considering the influence of gender and menstrual cycle phase on affective processing.

Second, Corinna Kührt associates dispositional willingness to invest cognitive effort with neurophysiological correlates of effort exertion (frontal midline theta power, N2, and P3 amplitudes) in a flanker task.

Third, Philipp Bierwirth reports findings on the association between dispositional anxiety and brain-heart communication, assessed via the feedback-triggered N300H during a gambling task.

Fourth, Johannes Rodrigues discusses the importance of cognitive effort and control to overcome default behavior in the ultimatum game considering: Reaction time,

electrocortical correlates, and relevant traits

Fifth, Christoph Frühlinger will investigate the predictability of fluid and crystallized intelligence from resting-state EEG and assess the CoScience dataset’s integrity by replicating reported associations between state sleepiness and brain power.