digit group
8.Results On condition that the concentration of mix benzene exposed to workers was lower than the MAC, the scores of tests (Profile of Mood States, Simple Reaction Time, Digit Span, Santa Ana Manual Dexterity, Digit Symbol, Benton Visual Retention and Pursuit Aming) were found to be statitically significant by comparison with those of control group(P<0.01).
9.The results of NCTB test could be evident that there were significant differences between the exposed group and the control group in Mood state,Digit span,Digit symbol substitution Santa Ana dexterity and Pursuit aiming tests after the exclusion of the difference age,work-age and educational level.

