Box plots of listening test results for viol performances showing (a) average examples, (b) extreme examples, and (c) all examples. The thick line within the box represents the median, the box edges represent the upper and lower quartiles, and the whiskers represent the nonoutlier maxima and minima. Bold labels, asterisks (*) and double asterisks (**) indicate a p-values of <.05, <.01, and <.001, respectively.