Mean heights (mm) for trials with an obstacle

Experiment		No–No–O	O–No–O	No–O–O	O–O–O
Experiment 1	Single person reaching	307.59	308.82	309.20	312.15
Experiment 2	Shared target, seated opposite, same hands	318.11	325.79	322.59	323.65
Experiment 3	Shared target, seated opposite, mirrored hands	325.51	326.60	323.37	325.93
Experiment 4	Shared obstacle, seated opposite	314.58	315.77	312.64	315.93
Experiment 5a	Shared obstacle, seated at 90°	312.74	318.56	313.73	317.03
Experiment 5b	Shared target, seated at 90°	320.52	325.03	322.11	328.07
Experiment 6	Seated adjacent, no objects shared	317.38	317.22	316.66	319.82
Experiment 7	Seated adjacent, transparent Perspex barrier	336.16	336.82	337.48	338.72