Fig. 4: Friends (n = 30) explored more topics than strangers (n = 29) during conversation.

Violin plots overlaid on boxplots for A the number of topics generated, B the number of switches generated, and C the mean cosine distance for each dyad are plotted separately for friends (Red) and strangers (Blue). * = p < 0.05, ** = p < 0.01, *** = p < 0.005. P values were derived using two-tailed two-sample t-tests (no adjustments were made for multiple comparisons). The boxplots indicate the median (central line), the interquartile range (IQR; box edges), and the whiskers, which extend to 1.5 times the IQR from the first and third quartiles.