DEPRESIVNOSTI VIZUELNO PAMĆENJE SPECIFIČNIH STIMULUSA (EMOTIKONA)

Depression is a state of reduced psychophysical activity that is accompanied by various changes in cognitive, emotional and social functioning. Previous studies have found that depression leads to changes in the recognition of the emotions of others, makes it difficult to direct attention and significantly impairs visual memory. The main goal of this research is to examine the relations between depressive symptoms and visual memory of specific stimuli that show emotions. We also want to examine whether the intensity of depressive symptoms is related to longer reaction time in the experimental task, as well as whether the accuracy of the emoticon’s visual memory depends on the set size. The research was conducted on a sample of 84 participants, students of Faculty of Philosophy in Banja Luka (90% female). The PHQ-9 questionnaire was used to assess depressive symptoms. Visual memory task was created in SuperLab 4.1. for Windows.The results show that there is a partial contribution of moderate depression to the accuracy of emoticon memory with sadness expression. No partial contribution of any category of depression to the memory accuracy of emoticons with the expression of happiness has been determined. A statistically significant negative correlation for the category of “sad” stimuli was obtained between the expression of depressive symptoms and the response time in the experimental task, while no statistically significant correlation was obtained for the second category of stimuli. It was also found that the number of errors increases with the set size. These results can be explained by negative bias and cognitive load in information processing. Key words: visual memory, depression, emoticons, expression of happiness, expression of sadness

Kontribusi pengalaman mengajar, kompetensi guru dan motivasi bekerja terhadap profesionalisme guru SMK

Tujuan penelitian meliputi: (1) Untuk mengetahui ada tidaknya kontribusi pengalaman mengajar, kompetensi guru dan motivasi guru secara bersama-sama terhadap profesionalisme guru SMK (2) Untuk mengetahui ada tidaknya kontribusi pengalaman mengajar secara parsial terhadap profesionalisme guru SMK. (3) Untuk mengetahui ada tidaknya kontribusi kompetensi guru secara parsial terhadap profesionalisme guru SMK (4) Untuk mengetahui ada tidaknya kontribusi motivasi guru secara parsial terhadap profesionalisme guru di SMK. Jenis penelitian ini adalah penelitian kuantitatif. Penelitian dilaksanakan pada SMK YPE Sawunggalih Kutoarjo Kecamatan Kutoarjo, Kabupaten Purworejo. Populasi penelitian ini 77 guru dengan sampel 44 guru SMK Metode pengumpulan data yang digunakan adalah dokumentasi dan kuesioner. Uji prasyarat analisis menggunakan uji normalitas, uji linearitas dan uji multikolinearitas. Teknik analisis data yang digunakan adalah analisis regresi berganda. Hasil dari penelitian ini menunjukkan: (1) Pengalaman mengajar, kompetensi guru dan motivasi kerja berkontribusi positif yang signifikan secara bersama-sama terhadap profesionalisme guru (2) Pengalaman mengajar guru berkontribusi positif yang signifikan secara parsial terhadap profesionalisme guru (3) Kompetensi guru berkontribusi positif yang signifikan secara parsial terhadap profesionalisme guru (4) Motivasi kerja berkontribusi positif yang signifikan secara parsial terhadap profesionalisme guru. Teaching experience contributions, teacher competence and motivation to work on vocational professionalism AbstractThe research objectives include: (1) To find out whether there is a contribution of teaching experience, teacher competence and teacher motivation together towards the professionalism of vocational teachers (2) To determine whether there is a partial contribution of teaching experience to the professionalism of vocational teachers. (3) To find out whether there is a partial contribution of teacher competence to the professionalism of vocational teachers (4) To determine whether there is a partial contribution of teacher motivation to the professionalism of teachers in Vocational Schools. This type of research is quantitative research. The study was conducted at YPE Sawunggalih Vocational School Kutoarjo, Kutoarjo District, Purworejo Regency. The study population was 77 teachers with a sample of 44 vocational teachers. Data collection methods used were documentation and questionnaires. Analysis prerequisite test using normality test, linearity test and multicollinearity test. The data analysis technique used is multiple regression analysis. The results of this study show: (1) teaching experience, teacher competence and work motivation contribute positively significantly together to teacher professionalism (2) teacher teaching experience contributes positively significant partially to teacher professionalism (3) teacher competency contributes positively partially significant towards teacher professionalism (4) Work motivation contributes positively, partially significant to teacher professionalism.

Comparing effort perception in individual and joint action contexts

In order to sustain cooperation, it is important that we have a sense that the distribution of efforts is fair. But how proficient are we at comparing our effort relative to that of others? Does the perception of our effort differ in individual and joint action contexts? To address these questions, we asked participants to squeeze a hand dynamometer at varying degrees of force to meet three target levels alone and with a partner. The results do not reveal a significant difference in the perception of effort between the two conditions. However, participants’ estimation of their effort skewed towards half when they made partial contribution to the target and this effect was more pronounced in the joint action. Taken together, the findings suggest that participants might have applied heuristics when perceiving their effort and in addition, expected fairness in the effortcontribution in a joint action context.

On the drivers of global grain price volatility: an empirical investigation

Several drivers may generate market instability, but the partial contribution of different factors is still debated. We investigate how market-based drivers influence the global price volatility of three major grains: wheat, corn, barley. We adopt a Seemingly Unrelated Regression Equations model, in order to investigate potential common patterns. We compare inter-annual, intra-annual, and global volatility, to conclude on short-run and long-run dynamics of markets instability. We quantify the negative relationship linking (temporal) arbitrage and grain price volatility and conclude on the effects of supply movements on price volatility.

THE LIGHT-BY-LIGHT CONTRIBUTION TO THE MUON (g - 2) WITHIN NONLOCAL CHIRAL QUARK MODEL

The light-by-light contribution to the anomalous magnetic moment of muon is estimated in the framework of nonlocal quark model. The partial contribution from contact diagrams and mesonic exchanges is discussed.