Abstract Graph thresholding is a frequently used practice of eliminating the weak connections in brain functional connectivity graphs. The main aim procedure to delete spurious data. However, choice threshold arbitrary, and effect not fully understood. Here we present description changes global measures graph depending on different proportional thresholds based 146 resting-state EEG recordings. dynamics presented five synchronization (wPLI, ImCoh, Coherence, ciPLV, PPC) sensors source...

<p>The article presents the results of a study on features spatial working memory in students from grades 2 to 11. The aim is identify relationship between age school entry and performance. A total 773 participated research. Corsi Block-Tapping Test was used assess individual differences memory. showed that capacity increases with age. negative correlation found starting schooling level It discovered development depends more educational experience learning environment (class) than at...

The aim of the present study was to investigate whether EEG resting state connectivity correlates with intelligence. One-hundred and sixty five participants took part in study. Six minutes eyes closed recorded for each participant. Graph theoretical metrics were calculated separately two well-established synchronization measures [weighted Phase Lag Index (wPLI) Imaginary Coherence (iMCOH)] sensor- source space. Non-verbal intelligence measured Raven's Progressive Matrices. In line Neural...

<p>Mathematical anxiety (MA) negatively affects all aspects of activities related to manipulating numbers, both in education and everyday life. MA is associated with mathematical self-efficacy, subjective value mathematics, attitude, interest towards mathematics. Individuals pronounced have a lower need for cognitive load reflective thinking. Among the predictors MA, cognitive, personality, social can be identified. The question brain mechanisms remains relevant. review provides an...

Abstract Network neuroscience investigates the brain’s connectome, revealing that cognitive functions are underpinned by dynamic neural networks. This study how distinct abilities—working memory and inhibition—are supported unique brain network configurations, which constructed estimating whole-brain networks through mutual information. The involved 195 participants who completed Sternberg Item Recognition Flanker tasks while undergoing EEG recording. A mixed-effects linear model analyzed...

Adolescents face many barriers on the path towards a STEM profession, especially girls. We examine gender stereotypes, cognitive abilities, self-perceived ability and intrinsic values of 546 Russian school children from 12 to 17 years old by sex preferences. In our sample, students compared no-STEM have higher motivation math science, are more confident in their abilities perceive as being easier. Boys scored overall academic self-efficacy, learning math's importance for future careers....

Background . Math anxiety is a state of fear and that an individual experiences when interacting with mathematical problems. Currently, there lack questionnaires to measure for Russian-speaking schoolchildren. The aim. study analyzed the factor structure psychometric properties Abbreviated Anxiety Scale (AMAS). Materials methods involved 1,198 schoolchildren in grades 10–11. AMAS were analyzed. Results demonstrated bifactor structure: subscales Learning (LMA) Evaluation (MEA) general scale...

<p style="text-align: justify;">In modern clinical psychiatry, there is a tendency to introduce the principle of quasi-dimensional assessment, which can be facilitated by use specialized diagnostic methods such as neuropsychological examination. The purpose study clarify possibilities examination during forensic psychiatric for persons held criminally responsible. As part brought criminal responsibility on basis Serbsky State Scientific Center Social and Forensic Psychiatry Ministry...

Abstract Network neuroscience explores the brain's connectome, demonstrating that dynamic neural networks support cognitive functions. This study investigates how distinct abilities—working memory and inhibitory control—are supported by unique brain network configurations constructed estimating whole‐brain using mutual information. The involved 195 participants who completed Sternberg Item Recognition task Flanker tasks while undergoing electroencephalography recording. A mixed‐effects...

In this paper, the results of a psychometric analysis Brief Russian-language version COPE-A inventory for adolescents are presented. The was designed identifying coping strategies used in stressful situations and is comprised 31 items. study involved 3530 aged 13 to 17 years old. Using exploratory factor confirmatory analysis, it shown that data correspond expected six-factor configuration, but distribution items by factors differs from theoretical structure. To improve structure, two...

The representation format of math problems can manifest dissimilarly in people with varying levels performance. aim this study was to investigate the neurocognitive underpinnings two-digit exact calculation tasks different formats: numerical and word. Fifty-three students were divided into groups high low performance based on their ability solve problems. They asked calculate addition numbers read that did not require calculations. Brain activation recorded using functional near-infrared...

A new approach to terahertz (THz) diagnostics of the human psychoemotional state is proposed, based on analysis THz contribution total signal while simultaneously recording IR and emissions from body (hereinafter referred as – image). The developed image-processing algorithm allows extraction informative determined by radiation perceived system. Simultaneous registration images face psychophysiological indicators are carried out in situations physical stress (short-term intense exercise...

Background. One promising direction in development of contactless techniques for assessment the human psychoemotional state (PES) is elucidation relationships between psychophysiological indices and electromagnetic radiation IR THz ranges.

The quality of sleep significantly impacts children's day-to-day performance, with at least 20% reporting issues sleepiness. Valid tools for assessing the are needed.In this study, we assessed psychometric properties Russian version Pediatric Daytime Sleepiness Scale (PDSS). initial adaptation PDSS was conducted on a sample from Arctic regions Russia. This location may have influenced scale's generalizability due to variations in natural daylight across different areas country.To rectify...

The factor structure of the Short Dark Triad or SD3 questionnaire was investigated using a sample adolescents. is tim­­­e-efficient method designed for assessment three overlapping negative personality traits: Machiavellianism, subclinical narcissism, and psychopathy. Conceptually, based on idea that psychopathy, while being relatively independent constructs, nonetheless have common core similar manifestation in interpersonal relationships exacerbate influence other traits. questionnaire's...

Abstract The procedure of thresholding for graph construction is one the common steps in calculating networks brain connections. However, this can lead to incomparable results from different studies. In present study we aim test effect or algorithmic reduction number connected nodes on a set widely used connectivity metrics derived EEG data. 164 people took part our study. Participants were recruited via social networks. was recorded during resting state. At beginning each participant asked...

This study investigates the psychometric properties of brief COPE in Russian schoolteachers. A total 773 (91% female; M = 43, SD 9.79) teachers participated study. Principal component analysis (PCA) and confirmatory factor (CFA) were applied to assess COPE. The Perceived Stress Scale (PSS) was used construct validity. main result current research is a revised structure for consisting six sub-scales: «socio-emotional support», «religion», «acceptance», «problem-focused coping», «avoidance»,...

This research paper delves into the neural processes underlying working memory through lens of complex network analysis. Employing this approach, study aims to unravel rapid mechanisms governing memory. The investigation focuses on discerning dynamics topological features functional brain networks during various stages memory, namely encoding, storage and retrieval. unveils that exhibit distinct topologies contingent specific phase Notably, patterns alteration in global...

Life satisfaction is associated with adolescents' adaptability, academic achievement, and mental health, it reflects the profile of a country's economic development. In this study, we assessed psychometric properties Russian version Multidimensional Students' Satisfaction Scale (MSLSS). The initial adaptation MSLSS was performed using sample primary school students. Validation on early-to-middle adolescents necessary to assess its reliability validity for age group. comprised 2826 between...

BACKGROUND: Neural networks of the brain continually adapt to changing environmental demands. The network approach in neuroscience, which focuses on analysis structural and functional characteristics related cognitive functions, is a highly promising avenue for understanding psychophysiological mechanisms underlying adaptive dynamics processes. AIM: We aimed explore how topological features connectomes human are linked different focus was dynamic changes during working memory tasks identify...

This study is the first to assess internal consistency and factor validity of Abbreviated Math Anxiety Scale (AMAS) in a sample Russian adolescents as well gender differences invariance. The included 4,218 grades 7–9 ( M = 14.23, SD 0.92). Internal consistency, measured with Cronbach’s alpha, was high. Analysis structure revealed best correspondence second-order model, which two scales (learning math anxiety evaluation anxiety) general scale anxiety. There were greater all three scales....

Abstract This study involved a psychometric analysis of the 10-item Perceived Stress Scale (PSS-10). To investigate Russian version PSS-10 for adolescents, 3530 adolescents aged 13–17 years were recruited. Confirmatory factor revealed that data corresponded to expected two-factor configuration. Psychometric properties and structure evaluated. As expected, included two factors: perceived helplessness self-efficacy. Internal consistency demonstrated acceptable values (Cronbach’s alpha was 0.82...

The present study investigates the relationship between individual differences in verbal and non-verbal cognitive abilities resting-state EEG network characteristics. We used a neuroscience approach to analyze both large-scale topological characteristics of whole brain as well local characteristic path length, modularity, cluster coefficient for different frequency bands (alpha, high low; beta1 beta2, theta) were calculated estimate integration segregation properties networks. Betweenness...

Background.To assess the structure of inter-ethnic attitudes and risks ethnoreligious tension, psychologists mostly use questionnaires, interviews, subjective scaling, content analysis, special tests.One possible approach to increasing validity reliability these explicit methods is registration psychophysiological indicators while a recipient completes questionnaire or test forms.Objective.The results pilot research are presented, which focus on study human psycho-emotional states during...

The Dark Triad, which unites three socially averse personality traits (Machiavellianism, subclinical narcissism, and psychopathy) is associated with callousness, manipulation, violation of social norms, cynicism, lack empathy, deceptiveness, exploitation others. Studies adults showed clear sex differences the triad traits, non-linear age differences, links violence aggression. present study investigated 1) in Triad are manifested adolescence; 2) relation between bullying. 325 high school...