Table 1.

Mean correlations of collaborating pairs and their confidence intervals under null hypothesis that the correlation is independent of the pair assignment within the class: heart rate and standard deviation of successive differences (SDNN).

HRV feature	window (s)	avg. cor. in dyads	95% ci	adj. p-value
Mean HR	60	0.27	[0.12, 0.29]	0.32
SDNN	60	0.15	[0.04, 0.14]	0.07•
Mean HR	300	0.31	[0.12, 0.40]	0.53
SDNN	300	0.15	[0.03, 0.22]	0.53
Results with data where task-switch times are removed
Mean HR	60	0.34	[0.13, 0.34]	0.14
SDNN	60	0.17	[0.05, 0.15]	0.04*
Mean HR	300	0.42	[0.15, 0.45]	0.32
SDNN	300	0.23	[0.05, 0.28]	0.39

Statistical significance is denoted by *p < 0.05 and ^•p < 0.1. p-values were corrected against family-wise error rate.