Relaxation-index and EEG-power-based coupling analyses show no significant correlations with academic performance¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r1 · q2
Currency · newest study 2022 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Correlations between relaxation indexes and academic performance failed to reach significance (inter-brain relaxation: r = -0.278, p = .152; single-brain relaxation coupling: r = 0.069, p = .728, n = 28). → Jingjing Chen 2022 q2 i? When using EEG power data at delta, theta, alpha, beta and gamma bands, all correlations with academic performance failed to reach significance. → Jingjing Chen 2022 (2)

Evidence¶

Jingjing Chen 2022¶

Jingjing Chen, Bing Xu & Dan Zhang. (2022). Inter-brain coupling analysis reveals learning-related attention of primary school students. bioRxiv. https://doi.org/10.1101/2022.06.08.495411

q2 · i? · associational · r1

Control analysis in the same 28-student classroom EEG study using the NeuroSky relaxation index; the article reports "r = -0.278, p = .152" and "r = 0.069, p =.728", both non-significant.

"Moreover, the correlations between individual’s relaxation index and academic performances also failed to reach significance (Fig. 5c-d, inter-brain relaxation level: r = -0.278, p = .152, n = 28; single-brain relaxation coupling: r = 0.069, p =.728, n = 28)."

Jingjing Chen 2022 (2)¶

Jingjing Chen, Bing Xu & Dan Zhang. (2022). Inter-brain coupling analysis reveals learning-related attention of primary school students. bioRxiv. https://doi.org/10.1101/2022.06.08.495411

q2 · i? · associational · r1

Secondary analysis of the same classroom dataset using normalized EEG power in five frequency bands (delta 1-4Hz through gamma 30-40 Hz) for both inter-brain and single-brain analyses; no significant correlations with academic performance.

"When using the EEG power data for analysis, all the correlations failed to reach significance."

Discussion¶

Related Claims¶

• Inter-brain attention coupling to class-average attention dynamics during lectures is positively correlated with primary school students' academic performance — related
• Outcome-related inter-brain coupling is frequency-specific: theta for Math and alpha for Chinese, with no significant correlations in the beta bands — related
• Single-brain EEG features (relative frequency-band power) do not correlate significantly with disciplinary final exam scores — a narrower finding that bears on this claim
• Peer-based inter-brain coupling predicts math improvement only via class-average coupling and shows subject-specific static patterns — related
• Static same-wave student-teacher inter-brain coupling is negatively associated with concurrent math performance — related