Table 3. Correlation coefficients for strength (hyper-, Intra-, and inter-brain) and characteristic path length (CPL_i) with average scores of subjective partner-oriented kissing satisfaction and immediate kissing quality during the task.

	Kissing satisfaction			Kissing quality
				Assessed during RK		Assessed during K-SA
	RK	K-SA	HK	RK	K-SA	RK	K-SA
	Strengths (hyper-brain connections)
Frontal	0.452*	0.390*	0.297	−0.382*	−0.297	0.424*	0.342
Central	0.342	0.278	0.271	−0.377*	−0.290	0.359	0.301
Parietal	0.316	0.319	0.213	−0.419*	−0.368*	0.356	0.173
	Strengths (intra-brain connections)
Frontal	0.324	0.210	0.226	−0.219	−0.066	0.479**	0.409*
Central	0.188	0.154	0.217	−0.201	−0.090	0.414*	0.388*
Parietal	0.210	0.169	0.204	−0.257	–0.133	0.444*	0.308
	Strengths (inter-brain connections)
Frontal	0.461**	0.427*	0.302	–0.333	–0.305	0.162	0.049
Central	0.420*	0.302	0.256	–0.324	–0.287	0.129	0.037
Parietal	0.363*	0.390*	0.191	–0.355	–0.350	0.124	–.057
	Characteristic Path Length (CPLi)
Frontal	–0.360*	–0.309	–0.293	0.385*	0.265	–0.398*	–0.311
Central	–0.329	–0.218	–0.226	0.341	0.255	–0.309	–0.261
Parietal	–0.267	–0.250	–0.211	0.413*	0.347	–0.323	–0.191

RK = romantic kissing, K-SA = kissing while performing silent arithmetic, and HK = hand kissing.

Please note that partner-oriented kissing satisfaction was correlated with theta oscillation nodes (5 Hz) and kissing quality was correlated with alpha oscillation nodes (10 Hz).