Cognitive science

Background. The catechol-O-methyl transferase gene influences the reuptake of monoamines (dopamine, serotonin, noradrenaline) from the synaptic space. The structural peculiarities of this gene are linked with the duration of stay of neurotransmitters in the synaptic gap and the emergence and duration of emotional reactions, which may considerably affect a person’s level of aggressiveness; these peculiarities may manifest as psychophysiological characteristics.

Objective and design. This study investigated the amplitude, spatio-temporal traits and sources of evoked brain activity in men with several genotypes in the polymorphic locus Val158Met in the COMT (Catechol-O-methyl transferase) gene, levels of aggressiveness using the Buss-Darkee inventory, proneness to various types of deviant and addictive behaviors in accordance with the methods of A.N. Oryol and the preferred strategies of behavior during conflict in accordance with the methods of Kenneth Thomas. Statistical processing of psychodiagnostic data included dispersive (ANOVA) and discriminative analyses.

Results. This study found significant differences in the parameters of evoked brain activity components in responses to emotionally charged stimuli (“aggression”, “positive”, “tolerance”, “extremism, terrorism”) compared with neutral images. Student’s t-test (Holms- corrected for multiple comparisons) was used to analyze the EEG-VEP data.

Conclusion. This study confirmed the hypothesis of differences in spatio-temporal and amplitude parameters of evoked brain potentials in young men exhibiting differing levels of aggressiveness. The sources of evoked brain activity determined using sLORETA (Standardized Low-resolution Brain Electromagnetic Tomography) were different between carriers of different genotypes.

Background. Modern technologies provide a wide range of opportunities for studying different types of social processes and phenomena. Currently many original social studies have been done with the use of virtual reality technologies. The effectiveness of their application has been shown for the study of verbal and nonverbal communication; the processes of ethno-cultural identity; and for teaching social skills, as well as correcting social anxiety and ethnic attitudes. One of the very real question concerning spatial behavior during communication with partners from other ethnic groups, however, has not been studied very much.

Objective. In our study we explored proxemic behavior in subjects’ face-to-face interactions with avatars of in-group and out-group ethnic appearance. Using the CAVE virtual reality system, we studied preferred interpersonal distances in carrying out memory tasks during interaction with the avatars.

Design. Three virtual environments with avatars of different ethnic appearance were developed. Each virtual scene represented a room where three avatars of the same ethnicity were standing. Their appearance was associable with one of three ethnic groups– the Slavic, North Caucasian, or the Central Asian. The participants (all of whom identified themselves as Russians) were immersed in the virtual scenes with the help of the CAVE virtual reality system. They were instructed to keep in mind as many details of the avatars’ appearance as they could. 

During the task’s execution the interpersonal distances between the participants and the avatars were registered. After leaving the CAVE, the participants were asked to answer questions about the details of avatars’ appearance, and to fill out a questionnaire assessing the Presence Effect in virtual environments. The identification accuracy of the avatars’ appearance details and the Presence effect were measured. The interpersonal distances were analyzed for the area around the direction of mutual gaze.

Results. The results showed that participants preferred to keep closer interpersonal distances from the avatars of the same ethnic group as their own. During interaction with avatars belonging to another ethnic group, significantly larger interpersonal distances were preferred. A significant correlation between the interpersonal distance and the Presence Effect was also revealed.

Conclusion. Virtual reality technology provides a unique and valuable tool for social researchers, including in ethnic attitude studies. A complex method of measuring interpersonal distances and the Presence Effect allows us to assess the main variables during social interaction with high accuracy. The virtual environments designed for this study can be applied successfully not only for studying proxemic behavior, but also for accomplishing other tasks, such as developing communication skills and forming positive attitudes towards ethnic out-groups.

Background. To assess the structure of inter-ethnic attitudes and the risks of ethnoreligious tension, psychologists mostly use questionnaires, interviews, subjective scaling, content analysis, and special tests. One possible approach to increasing the validity and reliability of these explicit methods is the use of the registration of psychophysiological indicators while a recipient completes the questionnaire or test forms.

Objective. The results of a pilot psychophysiological research are presented, which focus on the study of human psycho-emotional states during socio-psychological testing to identify attitudes in the field of interethnic and interfaith relations.

Design. The essence of the applied experimental approach is to control the functional (psycho-emotional) state of a respondent using the registration of complex psychophysiological (physiological and behavioral) responses in the process of completing the socio-psychological questionnaire.

Results. It was shown that the rhythmic brain activity (ratio of the power indexes of alpha and beta rhythms), the amplitude of the systolic wave (photoplethysmogram) (ASW PhPG) and the magnitude (length) of the ‘circumflex line of the Galvanic Skin Response’ (GSR-L) may be the complex of indicators that possess sufficiently high selective sensitivity to differentiate nonspecific reactions of the human nervous system to personally important (emotiogenic, stressful) questions in the questionnaire.

Conclusion. The proposed approach may help to identify stressful (emotiogenic) issues (questions) in socio-psychological tests and questionnaires that are of the greatest interest to the subject and, as a result, most adequately reflect individual and population attitudes in the field of social relations.