Fig. 2.

(Color online) Psychometric function slope plotted as a function of the SRT in dB SNR for speech-shaped noise (left panel) and two-talker speech (right panel) maskers. Symbols reflect age group, as defined in the legend. Boxplots indicating the distribution of SRT and slope by group are shown below and to the left of each scatterplot, respectively. Boxes indicate the 25th, 50th, and 75th percentiles, whiskers span the 10th to 90th percentiles, plus signs indicate minimum and maximum values, and filled symbols show the mean SRT and the median slope values.