Extended Data Table 4 Analyses on Verbal and Nonverbal Behaviours

From: Virtual communication curbs creative idea generation

  1. (a) Summary of the effect of communication modality on nonverbal behaviour (objective judges' scores of muted videos). (b) Summary of the effect of communication modality on verbal behaviour (objective judges' scores of videos with sound). For these regressions, we ran linear mixed-effect regression (using the lmerTest package, Bates, Maechler, Bolker, and Walker, 2013) and included a random effect of judge and group number because each judge evaluated five videos and we had two videos per pair (one for each participant). See Supplementary Information F for model assumption tests of normality and heteroskedasticity and for robustness checks. When the measures did not meet the assumptions of a linear model, we instead ran a non-parametric test (Kruskal–Wallis rank-sum test). For non-verbal behaviour, n = 1,676 observations; for verbal behaviour, n = 1,380 observations. All tests are two-tailed and there were no adjustments made for multiple comparisons (for a discussion of our rationale, see Supplementary Information S).
Back to article page