Table 1.

Associations between coordination at the level of intentions and relational factors.

	Familiarity	Instrumental proximity	Spatial proximity
Correlation
Beta	0.058	0.05	0.02
se	0.04	0.067	0.019
t-value	1.34	0.73	1.09
p-value	0.1	0.5	0.28
Mean slider distance
Beta	− 0.023	− 0.012	− 0.0056
se	0.013	0.02	0.005
t-value	− 1.83	− 0.06	− 1
p-value	0.037*	0.57	0.32

We report the output of linear mixed regressions assessing the impact of pairs of musician’s familiarities, and spatial and instrumental proximities on the correlation and mean distance of their ratings on the sliders. Significant effects are highlighted in bold. None of these regressions were significant for musical actions (all p-values > 0.05).