Abstract
A three-alternative forced choice forward masking procedure was embedded in an arcade-style rocketship video game. Human subjects were categorized into five groups; adults and 5-, 6-, 7-, and 8-year-old children. The masker was a 500-msec noise that simulated rocket engines and the 20-msec, 500-Hz sinusoidal signal was achirp from agremlin. The gremlin hid, at random, in one of the three rockets. Subjects responded and interacted with the game by touching the rocket hiding the gremlin. Results revealed that masked thresholds decreased for all groups as a function of the interstimulus interval. The reliability of the psychophysical approach was confirmed and a developmental trend lends support to the hypothesis that auditory processing improves as a function of age. Children’s auditory filters were suggested to be functionally larger than those of adults.
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