Effects of Noise on the Performance of a Memory-decision-response TaskAn investigation has been made to determine the effects of noise on human performance. Fourteen subjects performed a memory-decision-response task in relative quiet and while listening to tape recorded noises. Analysis of the data obtained indicates that performance was degraded in the presence of noise. Significant increases in problem solution times were found for impulsive noise conditions as compared with times found for the no-noise condition. Performance accuracy was also degraded. Significantly more error responses occurred at higher noise levels; a direct or positive relation was found between error responses and noise level experienced by the subjects. |
Common terms and phrases
14 subjects 16 blocks 25 problems aircraft noise analysis of variance Block number cannon firing correctly solve dependent variable DEVIATIONS OF PROBLEM different noises different subjects Duncan multiple range effects of noise effects on mean eight noises Fourteen subjects performed FREQUENCY DISTRIBUTION Helicopter flyover higher noise levels impulsive noise increasing noise level independent variable jack hammer Jet aircraft flyover Langley Research Center listed in table listening to tape mance Mean problem solution means and standard mentally retain multiple range test no-noise conditions No-noise problems no-noise/noise Noise 60 dB noise and no-noise noise effects noise intensity noise on human noise problems Nonsense noise Octave-band Pearson product-moment correlation performance degradation problems problems product-moment correlation coefficients regression curves relation was found relative quiet response button grip sequence showed that noise shown in figure Single regression analysis sound pressure level standard deviations stimulus light bank subjects and noise tape recorded noises task in relative task performance