Author/Authors :
Alimohammadi، Iraj نويسنده , , Soltani، Raziyeh نويسنده 1Occupational Health Research Center, Tehran University of Medical Sciences, Tehran, Iran , , Sandrock، Stephan نويسنده Institut Für Angewandte Arbeitswissenschaft, Dusseldorf, Germany , , Azkhosh، Manouchehr نويسنده Faculty of Psycology, University of Social Welfare and Rehabitation Sciences, Tehran, Iran , , Gohari، Mahmood Reza نويسنده Statistic Department, School of Management and Medical Information, Tehran University of Medical Sciences, Tehran ,
Abstract :
Background: Noise is one of the more widespread pollutions of road transportation system, which can cause
deterioration in performance. This experimental study was designed to assess the effect of road traffic noise on
performance with regard to extra/introversion and sex of participants. The personality trait of extra/introversion has
been remarked as relevant factor to mental performance.
Results: Thirty six (26 males and 10 females) medical sciences students of Tehran University participated in the
study. The students were placed in an unechoing room and performed the Cognitrone test from Vienna Test
System in quiet condition and under road traffic noise (71 dBA). The results of this study pointed out that noise
increased the percentage of sum of correct answers but had no effect on the speed of performance. Furthermore
this study showed that performance was enhanced in extroverts (P=0.001) but no significant difference was found
in introverts (P ?0.05).
Conclusions: The regression analysis revealed that extra/introversion was more important than sex to predict the
performance parameters.
