Figure 1. Experimental setup and results for unintentional and intentional social motor coordination.

(A) Participants sat on chairs side-by-side while oscillating wrist pendulums. Circular variance of the relative phase for the schizophrenia (black) and control groups (white) as a function of the trial segment for unintentional coordination (B) and of the pendulum combination and the pattern intended for intentional coordination (D). (C) Phase shifts from the intended pattern of coordination as a function of the pendulum combination for the two groups of participants (Asterisks in (C) indicate significant differences from zero). Error bars represent standard error.