FIG. 1.

Bar graph displaying perceptual accuracy scores at identifying environmental sounds across the experimental and control groups. The type of training that a subject received is indicated on the x axis and coded by colored bars (control: gray; experimental: white). Posttest scores only contain the responses to stimuli on which subjects did not receive explicit training (see the text). Asterisks indicate statistically significant differences between groups on pre- or posttest performance (p < 0.01).