Dyads develop a collaboration, and learning depends on the amount of information available about the partner.
(a) Temporal evolution of score over trials, for the haptic (H), visuo-haptic (VH) and partner-visible (PV) groups respectively. (b) Score at the beginning, middle and at the end of training. (c) Magnitude of the average interaction force over trials. (d) Interaction force at the beginning, middle and at the end of training. (e), Magnitude of the distance from partner’s VP for Player 1 over trials for the H, VH and PV groups. (f) Minimum distances of Player 1 from his/her partner’s VP at the beginning, middle and at the end of training. (g,h), As in (e,f) for Player 2. The areas in grey denote the training phase. All plots indicate the population means. Error bars and shaded areas denote the standard error (SE). Asterisks indicate statistically significant differences (*P < 0.05, **P < 0.01, ***P < 0.001).