This paper was prepared as the result of work sponsored by the California Energy Commission (Energy Commission) and the California Environmental Protection Agency (Cal/EPA). It does not necessarily represent the views of the Energy Commission, Cal/EPA, their employees, or the State of California. The Energy Commission, Cal/EPA, the State of California, their employees, contractors, and subcontr...

A computer-assisted adaptive (staircase) threshold acquisition procedure (the ISP) has been developed to determine hearing sensitivity of infants. A visually-reinforced head turn procedure is utilized. Thresholds at three frequencies are obtained with independent and concurrent staircases. Thus, motivation and attention to the task are the same for the three test frequencies. On each trial, the...