The Bar-On model of emotional intelligence (EI) is a multifactor model for EI and was designed by Bar-On in 1997 (
22). The emotional quotient (EQ) tool is used to evaluate EI and includes 90 questions, which describe emotions, ideas and behaviors in different situations. Study subjects read the question and then mark the rate of his agreement (or unagreement for some of the questions) with the question. The answers are based on the Likert scale (strongly agree, agree, undecided, disagree somehow, and strongly disagree). The higher score means better position for person in the tested scale or in overall test, for example the higher score in the self- expression scale means better a self-expression skill. This tool can be used for adults 18 years old and up, men and women with the common level of education. Reliability of the test was assessed with Cronbach's alpha, and the total Cronbach's alpha was reported 93%.The calculated alpha in the third part of the questionnaire was the same as alpha in the second part (
23). Many researches have been done on the validity of EQ-I, including structure validity of it. The results of structure validity have been shown with a few questionnaires like Beck digressional inventory (
24), coping inventory for stressful situations (
25), Eysenck personality questionnaire (
26), Mayer-Salovey-Caruso EI questionnaires (
27), the Minnesota multiphasic personality inventory (MMPI-2) (
28), NEO-five factor inventory (
29), sixteen personality factor questionnaire (16PF) (
30), Toronto Alexithymia scale (
31), symptom check list-90 (SCL90) (
32), Zung self-rating depression scale (
33). Stroop test (victory ES) (
34) is a common neuropsychological test for executive functions, selective attention and concentration. Subject must call the colors of the written words without attention to their meaning. This test is also useful in evaluating function of the frontal lobe. Validity of results of the attention direction part of the Stroop test in psychopathic studies depends on validity and reliability of this tool. Siegrist (
35) used a collection of taboo words as emotional stimulus and test them along with unemotional words on a group of normal precipitants. Using this single stimulus method, Siegrist was able to evaluate internal consistency of Taboo words, which was in an acceptable range (Cronbach's alpha = 80%). Fadardi (
36) repeats the test-retest process and Siegrist (
37) factor analysis with the emotional and classic Stroop (
38) tests and finds the similar results; there are other tests likewise but we used Stroop test due to being computerized and so more reliable and faster. Besides reliability of Stroop test, there is enough evidence for its validity. Sharma and McKenna (
39) believe that a limited number of studies have shown the effect of Stroop test in nonclinical population. Usually, the intervention rate is less in the nonclinical group compared with the clinical group; make it more difficult to show Stroop effects. Nevertheless, the emotional Stroop test is able to differentiate between clinical and nonclinical groups. This will help to solve the reliability problem, as Thorndike (
40) mentioned there are always some overlaps between reliability and validity.