Between‐brain coupling
FM
To examine whether participants exhibit differences in between‐brain coupling when assigned to a real dyad as compared with a pseudo dyad, we constructed three LME models, which included Group Assignment (Pseudo/Real), Condition (BB, FM, and IS), and ROI pairings as fixed factors, dyads' ID numbers as a random factor, and coherence (WTC) values as a dependent measure. The three models differed in their respective levels of interaction between the fixed factors, ranging from main effects only in the first model, through main effects and 2‐way interactions in the second model, to all possible main effects and interactions in the third model. Type II Wald Between‐brain coherence in the R.IFG and dmPFC in the IS condition, showing significant difference from back‐to‐back condition.Predicted IBS levels between Real and Pseudo group assignment in the IS and FM conditions.