Fig. 3: Effects of gestures on communication performance and the number of gestures under different conditions.

a Effects of gestures on sqrt (IOC), RPP originality and RPP fluency. b The number of different types of gestures in three conditions (i.e. ‘BOTH’, ‘BOTH/2’, and ‘ONE’). Because there were two participants using gestures in the ‘BOTH’ condition and only one in the ‘ONE’ condition, we divided the number of gestures in the ‘BOTH’ condition by two (the ‘BOTH/2’ condition) and compared it with the ‘ONE’ condition. c The positive correlation between the number of interactive gestures and RPP originality under the ‘BOTH’ condition; the positive correlation between the number of fluid gestures and RPP fluency under the ‘BOTH’ condition. ^*P < 0.05, ^**P < 0.01, ^***P < 0.001.