Document Type

Thesis

Date of Degree Completion

Spring 1974

Degree Name

Master of Science (MS)

Department

Mental Health Counseling

Committee Chair

Philip Tolin

Second Committee Member

Donald Roy Shupe

Third Committee Member

Richard V. Alumbaugh

Abstract

Eighty introductory-level psychology student volunteers performed a sweep-clock perceptual vigilance task. Each subject was exposed to one of four noise conditions: 65-dB constant noise, 100-dB constant noise, 100-dB regularly-intermittent noise and 100-dB variable intermittent noise. No overall effects of pattern of presentation schedule of noise on performance were found. Time-related changes in three measures, correct detections, reaction times, and incorrect detections plus sex differences in reaction times, were found. In the regularly-intermittent condition females showed a greater time-related decrement in correct detections than males and made fewer incorrect detections. With intermittent background stimulation the time-related change in incorrect detection rates obtained in constant background conditions were not found.

Comments

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