Figure 1.
Coordination in one small, 2-person group game (left) and one large, 17-person group game (right) with directional feedback.
The solid horizontal line indicates the server's number, and the other solid line indicates the group's sum on a given round. The dashed lines are individual participants' guesses.
Table 1.
Mean Rounds to Solution (and Standard Deviations) For Different Group Sizes and Feedback Types.
Figure 2.
For all groups, the average number of rounds needed for group coordination significantly decreases with group experience, from the first to the fifth directional feedback game, and the first to the fifth numeric feedback game.
The dashed lines represent the best-fit. Large and small groups show similar learning trajectories in each condition.
Figure 3.
The Y-axis indicates groups' reactions following a given magnitude of numeric feedback on the X-axis (top graph), or an unknown disparity level (the group is only told “Too High” or “Too Low”) in directional feedback games (bottom graph).
In both graphs, the solid line is the best-fit line for the data, indicating under-reactivity from the optimal dashed line.
Figure 4.
A smaller proportion of group members changes guesses as the group approaches the solution, as measured by rounds before solution on the X-axis.
Members of small groups (+s) altered their guesses on successive rounds more often than large groups (circles). The lines are best-fit lines for small and large groups, respectively.