Fig. 4
From: Balancing the playing field: collaborative gaming for physical training
Healthy-Healthy Performance Measures Analysis. Comparison of single- and dual-player performances as a function of individual relative ability: a The relative improvement during multiplayer is positively correlated to the relative skill (i.e. difference in performances) of the other partner during their single-player turns. b The dual-player score does not depend on the individual performance ratios (worst divided by best player). The different circle colours highlight the different turns (T2 - light gray and T3 - dark gray)