Fig 1. The relationship between laugh samples’ acoustic measures and average participant ratings, separated by actor sex, fitted with ordinary least squares regression.

Footnotes. Each point is a single laugh sample’s average score for a given social judgment. Y axes are the degree to which participants thought the description of each social dimension fit the laugh (1 = not at all, 10 = very much). X-axis tick marks for log-transformed variables are non-linear because they have been converted back to the original unit of measure. ST indicates a pitch variable that has been converted to the semitone scale. Since the plotted regression lines are from simple regressions, they may not perfectly match the coefficients from the reported LMEMs in Table 4.