Task and interpersonal interdependence interact on inter-brain synchrony in the right supramarginal gyrus¶

Claim · All claims
Evidence · 1 study · causal r1 · q3 · i3 large
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 IBS in BA40 (CH18: SMG.R) showed a significant task × interpersonal interdependence interaction with ηp2 = 0.205. → Zijun Yin 2025 q3 i? Friend dyads showed higher IBS than stranger dyads under LICT, and stranger dyads showed higher IBS under HICT than LICT. → Zijun Yin 2025

Evidence¶

Zijun Yin 2025¶

Zijun Yin, Bin Xuan, Chengchi Liu, Jingchao Yi, Xiaoyan Zheng & Mingming Zhang. (2025). The influence of task and interpersonal interdependence on cooperative behavior and its neural mechanisms. npj Science of Learning. https://doi.org/10.1038/s41539-025-00303-8

q3 · i3 · causal · r1

Repeated measures 2×2 ANOVA on wavelet transform coherence IBS across 21 channels found the interaction in SMG.R with "F (1, 32) = 8.234**, p =0 . 0 0 7 ,ηp2 = 0.205"; post hoc tests: friends > strangers under LICT (p = 0.019), HICT > LICT for strangers (p = 0.012).

"Within the BA40 (CH18: SMG.R), the IBS results indicated a significant interaction effect between the task and interpersonal interdependences, F (1, 32) = 8.234**, p =0 . 0 0 7 ,ηp2 = 0.205."

Discussion¶

Related Claims¶

• Task and interpersonal interdependence interact on intra-brain FC in DLPFC.R and SMG.R: strangers show higher FC under HICT, friends show higher FC under LICT — related
• In HICT, friend dyads' key-pressing scores correlate positively with IBS in right DLPFC and right pars triangularis — related
• High interdependent cooperation tasks yield higher key-pressing scores than low interdependent tasks for both friend and stranger dyads — related
• Feedback types elicit distinct fNIRS activation patterns: frontopolar and middle temporal gyrus higher under metacognitive feedback, supramarginal gyrus under affective feedback, DLPFC under neutral feedback — related