Prediction of work efficiency in early adolescence under the effects of noise

This is a short summary of research on how different stress factors in the work environment (climate, light, noise) affect work performance of early adolescents. Due to the complexity of the measurements, the research consisted of a small sample of male adolescents (N = 20); average age 13.5 years (SD = 0.25). Tasks were used which demanded average work attention from the adolescent boys and in this context applied the basic theory of the "rare" signal detection. The research was performed in an artificially created condition, a "climate chamber," which provided a wide variety of settings for various work conditions. We performed 360 measurements for each effect and all possible interactions. Of all three stress factors in the work environment, only noise was significant (p < .001). Its effect on the elements of work success is predictable on the basis of the introduced model under the defined marginal terms.     

Relationship of perceived physical self-concept and physical activity level and sex among young children

The aim of this study was to investigate the relationship between level of physical activity and perceived physical self-concept of young children. The sample comprised 364 children from Slovenia, aged 6.4 yr. (SD = 0.3), of which 179 were boys and 185 girls. Parents and teachers reported children's physical activity using the Harro questionnaire. We divided children into Low and High Activity groups based on their mean scores. The children completed Stein's Children's Physical Self-concept Scale, which assesses Global Physical Self-concept and the subdomains of Physical Performance, Physical Appearance, and Weight Control behavior. Two-way analysis of variance with both sex and physical activity levels, and their interaction were used to examine differences in Physical Self-concept. There were significant differences between the Low and High Activity groups on scores for global Physical Self-concept Scale, Physical Performance, and Weight Control, on which children from the High Activity group scored higher; whereas on the subscale Physical Appearance, there were no significant differences. There were no significant sex differences on the Physical Self-concept Scale. The most important conclusion of this research indicates the theoretical assumptions that Physical Activity and perceived Physical Self-concept are related. Direction of the relationship remains unclarified.     

Dopaminergic medication alters auditory distractor processing in Parkinson's disease

Parkinson's disease (PD) patients show signs of cognitive impairment, such as executive dysfunction, working memory problems and attentional disturbances, even in the early stages of the disease. Though motor symptoms of the disease are often successfully addressed by dopaminergic medication, it still remains unclear, how dopaminergic therapy affects cognitive function. The main objective of this study was to assess the effect of dopaminergic medication on visual and auditory attentional processing. 14 PD patients and 13 matched healthy controls performed a three-stimulus auditory and visual oddball task while their EEG was recorded. The patients performed the task twice, once on- and once off-medication. While the results showed no significant differences between PD patients and controls, they did reveal a significant increase in P3 amplitude on- vs. off-medication specific to processing of auditory distractors and no other stimuli. These results indicate significant effect of dopaminergic therapy on processing of distracting auditory stimuli. With a lack of between group differences the effect could reflect either 1) improved recruitment of attentional resources to auditory distractors; 2) reduced ability for cognitive inhibition of auditory distractors; 3) increased response to distractor stimuli resulting in impaired cognitive performance; or 4) hindered ability to discriminate between auditory distractors and targets. Further studies are needed to differentiate between these possibilities.     

Between east and west: Russian renewal and the future

Two philosophers and prominent public figures explore the spiritual and cultural framework within which Russia's crisis and prospects for social renewal must be understood. Their discussion ranges over several main areas of concern in Russia today: the nature of the person and her capacities as social actor, the forms of sociality Russia has known as seen against the background of Orthodoxy and Communism, and Russia's tragedy during the seventy-five years of Communism. A ‘third path’ is envisaged for Russian renewal based on geopolitical, cultural, and spiritual constants in the history of the nation.     

Relations between the motor and cognitive dimensions of preschool girls and boys

The aim of this study was to compare relations between latent motor dimensions and cognitive abilities of preschool boys and girls (N=665, age: 5 to 6 years). The psychological part of the testing was implemented with the Test Razkol. For the assessment of motor abilities 28 tests were given. The associations of motor and cognitive variables were estimated by multiple regression analysis, which showed positive and significant associations between the latent motor variables and the cognitive variable for both boys and girls. On both sexes, the motor dimensions with the strongest associations with the cognitive abilities are those of coordination and the speed of movement. Despite some differences between boys and girls, they still have a lot in common since the most important latent motor dimensions prevailing in the connection between motor and cognitive dimensions are similar.     

Motor coordination and intelligence level in adolescents

This study investigated the relationship between motor coordination and intelligence level in adolescents. The sample was comprised of 550 adolescents from Slovenia, aged 13.1 years (SD = 0.87), who attended elementary schools. For assessment of motor coordination a battery of eight tests were used. Assessment of intelligence was carried out with test TN-20. Participants were divided into below average and above average intelligence groups based on their mean scores. ANOVA was used to determine the differences in motor coordination between above and below average intelligence groups. The most important finding was that adolescents of average intelligence performed motor coordination tasks more efficiently than did adolescents of below average intelligence. The difference is significant (p < .05) on seven of eight coordination tests. Our assumption that adolescents with higher level of intelligence would be more efficient in performing coordination tasks was confirmed.