Identification of significant correlation between EI and educational achievement level was one of the most important findings of the current study. Also, significant relations were observed between educational achievement and levels of problem solving ability, stress tolerance, and self-awareness among the EI dimensions. It can be therefore concluded that among the EI components, problem solving ability, stress tolerance, and self-awareness are more significantly related to educational achievement level and may play more remarkable roles in prediction of educational achievement. This finding is in alignment with the assertion that individuals’ achievements in educational aspects in the university are not related solely to their intelligence quotient. Nonetheless educational achievement may depend on emotional and social skills of EI such as having the needed motive, the ability to remain expectant, obeying commands and controlling the stimuli, asking for others’ aid, and expression of emotional and educational requirements (
9).
In different studies in academic levels and even lower educational levels such as high-schools, it was demonstrated that a clear correlation exists between educational achievement and psychological and sensational controlling capabilities such as EI (
13). Role of EI on educational progress has also been emphasized in studies by Besharat et al. (
12), Parker et al. (
14), Samari et al. (
15), and Pitrides et al. (
16) but none of these studies, unlike the current research, investigated the respective correlation among medical students.
Furthermore, certain abilities have been related to the educational and vocational achievement and also EI in former studies. In a research conducted by Wessel et al. in US on health sciences students, a significant correlation was observed between EI and the control, guidance and leadership capabilities (
17).
Similar to our study, Zahrakar et al. evaluated EI using Bar-on questionnaire and they observed a significant and positive correlation coefficient at P = 0.01 between components of EI including self-awareness (CC = 0.271), impulse control (CC = 0.228) problem solving (CC = 0.287), interpersonal relationships (CC = 0.276), and stress tolerance and educational performance (CC = 0.311). Among the components of EI, stress tolerance and problem solving ability were the major and significant predictors for educational performance (
18). These findings are not in accordance with results of the current research in terms of correlation between the respective dimensions and educational achievement.
The relation between EI and mental health and educational performance of male and female students was analyzed in a study by Bakhshi et al., in Islamic Azad university-Behbahan branch. Similar to the current research, they concluded that there is a positive and significant correlation between variables of EI and educational performance (P < 0.01) with correlation coefficient of 0.68 (
19). On the other hand, impact of EI capabilities on educational achievement level has been brought under question in some other studies. For example, no significant correlation was found between any of EI dimensions and efficiency of anesthesia aides (exam scores of anesthesia board) in the research conducted by Talarico et al. in Pittsburg university (
21). Also, the study carried out by Haghani et al. in Isfahan on medical students revealed that average EI scores had no significant relation with their GPAs. However, among the sub-scales of EI, only independence was related to students’ GPA, but neither total score of EI nor critical thinking had tangible effect on person’s educational achievement (
22). Also, no relation was found between EI and educational achievement in the studies by Tamannaiefar et al. (
23) and Keshavarzi et al. (
24) both of which have been carried out on non-medical students.
According to the previous studies, educational achievement of medical students may be improved if behavior control abilities and self-confidence are promoted (
25). Filcher el al. concluded that average score of EI by the course of time increased for the intervention group, but slightly decreased in the control group (
26). In their study, score of initial EI was not significantly different between pre-clinical and clinical groups which is inconsistent with the results of our study. In a study by Pangersic et al. in Croatia on medical students of second to sixth year, it was shown that professors had an essentially effective role in educational motivation of students through orientating their sensational, emotional, and social approaches. Also, they could influence determination of students’ future job plans. Such intellectual and emotional orientation may have resulted from contributing to the improvement of EI as well (
27).
A privilege of the current study is the fact that both clinical and non-clinical groups were compared here, and clinical group exhibited higher EI. Taking into account the fact that all participants of the current research were male, one of the reasons for discrepancy of the current results with findings of other studies is inequality of gender proportion. Overall, it seems that although role of EI and its associated dimensions are effective during the course of education, but its impact becomes more tangible during vocational stages especially when the person’s career is much more crucial (
30). Thus, paying attention to the improvement of emotional control and EI is specifically critical among physicians. It is noteworthy that some of the abilities affecting EI such as problem solving ability, stress tolerance, interpersonal relationship, impulse control, and self-awareness can be promoted by using certain instructions. Therefore, the results of the current research and other similar studies can be utilized for designing solutions to improve EI level of students in Iran’s academic system in order to promote their social and educational achievements.