Aim: This study aimed to compare the behavioral activation systems between students with test anxiety (TA) and without TA. Methods: This study included undergraduate students registered at the Medical Science University of during 2009-2010. The selected female students (N=300) completed Test Anxiety Scale (TAS) and Gray-Wilson personality questionnaire (GWPQ) and 100 students who have obtained the lowest and highest scores in TA questionnaire, were further compared according to Grays Brine-Behavioral questionnaire. Data were analyzed using a T-test. Results: The results showed that samples were significantly different in total scores of Gray-Wilson personality questionnaire. In terms of subscales of Gray-Wilson personality questionnaire, there was a significant difference between the two groups in the behavioral inhabitation system (BIS) and fight -flight system (FFS) but no significant differences found between two groups in the behavioral activation system (BAS). Conclusion: Test Anxiety was corresponded with brain systems behavior theory, and anxiety increased in the avoidance system activation. [JCBPR 2015; 4(3.000): 141-146]