945 resultados para cognitive factors
Resumo:
High-level cognitive factors, including self-awareness, are believed to play an important role in human visual perception. The principal aim of this study was to determine whether oscillatory brain rhythms play a role in the neural processes involved in self-monitoring attentional status. To do so we measured cortical activity using magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) while participants were asked to self-monitor their internal status, only initiating the presentation of a stimulus when they perceived their attentional focus to be maximal. We employed a hierarchical Bayesian method that uses fMRI results as soft-constrained spatial information to solve the MEG inverse problem, allowing us to estimate cortical currents in the order of millimeters and milliseconds. Our results show that, during self-monitoring of internal status, there was a sustained decrease in power within the 7-13 Hz (alpha) range in the rostral cingulate motor area (rCMA) on the human medial wall, beginning approximately 430 msec after the trial start (p < 0.05, FDR corrected). We also show that gamma-band power (41-47 Hz) within this area was positively correlated with task performance from 40-640 msec after the trial start (r = 0.71, p < 0.05). We conclude: (1) the rCMA is involved in processes governing self-monitoring of internal status; and (2) the qualitative differences between alpha and gamma activity are reflective of their different roles in self-monitoring internal states. We suggest that alpha suppression may reflect a strengthening of top-down interareal connections, while a positive correlation between gamma activity and task performance indicates that gamma may play an important role in guiding visuomotor behavior. © 2013 Yamagishi et al.
Resumo:
Two experiments investigated the conditions under which majority and minority sources instigate systematic processing of their messages. Both experiments crossed source status (majority vs. minority) with message quality (strong vs. weak arguments). In each experiment, message elaboration was manipulated by varying either motivational (outcome relevance, Experiment 1) or cognitive (orientating tasks, Experiment 2) factors. The results showed that when either motivational or cognitive factors encouraged low message elaboration, there was heuristic acceptance of the majority position without detailed message processing. When the level of message elaboration was intermediate, there was message processing only for the minority source. Finally, when message elaboration was high, there was message processing for both source conditions. These results show that majority and minority influence is sensitive to motivational and cognitive factors that constrain or enhance message elaboration and that both sources can lead to systematic processing under specific circumstances. © 2007 by the Society for Personality and Social Psychology, Inc.
Resumo:
Self-attention research has demonstrated a relationship between dispositional self-focus, anxiety proneness and fear arousal. In addition, the effect of self-focus manipulations on approach-avoidance tasks involving a feared stimulus are strikingly similar to the effects obtained from manipulation of other cognitive factors such as perceived self-efficacy. A number of experiments were designed to explore the relationship between self-focused attention and ffilxiety. Data from the experiments demonstrate that self-attention influences a variety of cognitive variables which have been considered as central factors in anxiety. Concomitants of self-focus are increased awareness of physiological arousal and overestimation of such arousal, the identification of self-discrepancies, cognitive failures and performance deficits and the activation of physical threat concepts in memory. These factors are conceptualised as central in the negative evaluation of physiological arousal and coping resources in anxiety. Clinically anxious individuals typically have high scores in dispositional self-consciousness and body-consciousness. In patients suffering from generalised anxiety or panic disorders maladaptive self-focusing tendencies can be related to specific life stressors which render aspects of the self salient. An analysis of the ideational component of anxiety revealed three subcomponents; negative social ideation (worry about other people's reaction to the self), negative somatic ideation (worry about physical symptoms and health) and obsessional ideation (the experience of uncontrollable and repetitive thoughts) which were differentially associated with measures of dispositional self-focus. The frequency and content of an.xious w-orry is associated with specific self-focusing tendencies. It is proposed that the 'attentional style' of the individual is an important determinant of the nature and intensity of their affective response in a threatening situation. A self-attentional model of anxiety is proposed and the complex interaction between self-focus and other cognitive factors in anxiety such as appraisal of arousal and coping resources and perceived levels of self-efficacy is discussed. The model presents new directions for research and therapeutic intervention in anxiety.
Resumo:
We summarize the various strands of research on peripheral vision and relate them to theories of form perception. After a historical overview, we describe quantifications of the cortical magnification hypothesis, including an extension of Schwartz's cortical mapping function. The merits of this concept are considered across a wide range of psychophysical tasks, followed by a discussion of its limitations and the need for non-spatial scaling. We also review the eccentricity dependence of other low-level functions including reaction time, temporal resolution, and spatial summation, as well as perimetric methods. A central topic is then the recognition of characters in peripheral vision, both at low and high levels of contrast, and the impact of surrounding contours known as crowding. We demonstrate how Bouma's law, specifying the critical distance for the onset of crowding, can be stated in terms of the retinocortical mapping. The recognition of more complex stimuli, like textures, faces, and scenes, reveals a substantial impact of mid-level vision and cognitive factors. We further consider eccentricity-dependent limitations of learning, both at the level of perceptual learning and pattern category learning. Generic limitations of extrafoveal vision are observed for the latter in categorization tasks involving multiple stimulus classes. Finally, models of peripheral form vision are discussed. We report that peripheral vision is limited with regard to pattern categorization by a distinctly lower representational complexity and processing speed. Taken together, the limitations of cognitive processing in peripheral vision appear to be as significant as those imposed on low-level functions and by way of crowding.
Resumo:
We summarize the various strands of research on peripheral vision and relate them to theories of form perception. After a historical overview, we describe quantifications of the cortical magnification hypothesis, including an extension of Schwartz's cortical mapping function. The merits of this concept are considered across a wide range of psychophysical tasks, followed by a discussion of its limitations and the need for non-spatial scaling. We also review the eccentricity dependence of other low-level functions including reaction time, temporal resolution, and spatial summation, as well as perimetric methods. A central topic is then the recognition of characters in peripheral vision, both at low and high levels of contrast, and the impact of surrounding contours known as crowding. We demonstrate how Bouma's law, specifying the critical distance for the onset of crowding, can be stated in terms of the retinocortical mapping. The recognition of more complex stimuli, like textures, faces, and scenes, reveals a substantial impact of mid-level vision and cognitive factors. We further consider eccentricity-dependent limitations of learning, both at the level of perceptual learning and pattern category learning. Generic limitations of extrafoveal vision are observed for the latter in categorization tasks involving multiple stimulus classes. Finally, models of peripheral form vision are discussed. We report that peripheral vision is limited with regard to pattern categorization by a distinctly lower representational complexity and processing speed. Taken together, the limitations of cognitive processing in peripheral vision appear to be as significant as those imposed on low-level functions and by way of crowding.
Resumo:
The present research represents a coherent approach to understanding the root causes of ethnic group differences in ability test performance. Two studies were conducted, each of which was designed to address a key knowledge gap in the ethnic bias literature. In Study 1, both the LR Method of Differential Item Functioning (DIF) detection and Mixture Latent Variable Modelling were used to investigate the degree to which Differential Test Functioning (DTF) could explain ethnic group test performance differences in a large, previously unpublished dataset. Though mean test score differences were observed between a number of ethnic groups, neither technique was able to identify ethnic DTF. This calls into question the practical application of DTF to understanding these group differences. Study 2 investigated whether a number of non-cognitive factors might explain ethnic group test performance differences on a variety of ability tests. Two factors – test familiarity and trait optimism – were able to explain a large proportion of ethnic group test score differences. Furthermore, test familiarity was found to mediate the relationship between socio-economic factors – particularly participant educational level and familial social status – and test performance, suggesting that test familiarity develops over time through the mechanism of exposure to ability testing in other contexts. These findings represent a substantial contribution to the field’s understanding of two key issues surrounding ethnic test performance differences. The author calls for a new line of research into these performance facilitating and debilitating factors, before recommendations are offered for practitioners to ensure fairer deployment of ability testing in high-stakes selection processes.
Resumo:
Kutatásunk alapvetése, hogy egy ország versenyképessége az értékteremtő munkamegosztást támogató teljes közösségi intézményrendszer sikeres működésén múlik. Munkánkkal arra kerestük a választ, milyen értékek és motivációk alakítják a magyar gazdaság intézményrendszerét. Nem a hivatalos magatartási szabályok statikus elemzésére koncentráltunk, hanem a normák, konvenciók és innovációk világára, az intézményrendszer jövőjét befolyásoló dinamikus elemekre. Elemzésünk fókuszában a társadalmi és vállalkozói értékek, a gazdaságpolitika formálók versenyképességi narratívái, a helyi gazdaságok versenyképességi tényezői, a versenyképesség javítását szolgáló magánkezdeményezések és a nonprofit szektor működése álltak. Fő eredményünk, hogy a Magyarország jövőbeli versenyképességét befolyásoló tudati elemek - a gazdasági döntéshozók motivációi és normái – megfelelő alapot teremtenek a gazdaságunk versenyképességét megerősítő üzleti, civil és kormányzati kezdeményezések számára. Magas közösségi és morális elvárások jellemzik a lakosság és a vállalkozók értékrendjét. A gazdaságpolitika-alkotók nyitottak az intézményi problémákra, a magyar véleményformálók körében egyetértés van a fő versenyképességi kihívásokat illetően. Jól azonosíthatóak a szervezők erőfeszítéseit kompenzálni képes versenyképességi összefogások keretei. A helyi gazdaságfejlesztés intézményei alakulóban vannak. A nonprofit szektor működési viszonyainak bizonytalansága ellenére a közcélúság és a versenyképesség közös területein (mint az atipikus foglalkoztatás) jól teljesít. Ezek az eredmények egyszerre nyitnak perspektívát a tudományos vizsgálódás és a gyakorlati cselekvés számára. Az önérdek és a közösségi értékteremtő képesség javításának motivációja közötti kapcsolat tudományos vizsgálata, a társadalmi innovációk kutatása a versenyképesség javíthatóságának kereteit tárhatja fel. Az üzleti, civil vagy kormányzati szereplők pedig akkor tudják a fogyasztói, közösségi elvárásokat sikeresen összeegyeztetni stratégiai céljaikkal, ha a gazdasági és társadalmi szereplők normáihoz, konvencióihoz igazítva alakítják ki intézményformáló stratégiáikat. __________ The competitiveness of nations is based on the successful function of the institutions that support the division of labor on value creation – this is the basic principle of this research. Our project investigates what values and motivations shape the institutional setting of Hungarian economy. We study the world of norms, conventions and innovations – the elements that shape the institutions. The static analysis of official rules has only a minor role in this approach. Research focuses (1) on the value system of entrepreneurs (2), on the mind setting of public managers and executives of economic policy (3) on the factors of local economic competitiveness, (4) on the actions of private and non-profit sector in order to enhance competitiveness. The main finding of this research is that the cognitive factors that shape the competitiveness of Hungary – the norms and motivations of decision makers in the economy – give a positive support for the competitiveness strengthening initiatives of business, non-profit and public sectors. The studies on the values system of entrepreneurs and citizens show that expectations and moral values connected to competitiveness are strong. The public managers of economic policy are open-minded and there is a general consensus of experts, business and politics on the key competitiveness challenges of Hungary. There are well defined frameworks to conceptualize the schemes that make organizers’ efforts affordable in private initiatives for competitiveness. There are various developments on the field of institutions for local economic development. The nonprofit sector has good results on the common fields of competiveness and equity (like atypical forms of employment) despite the uncertainties in the background of the sector. These results open perspectives both for scientific research and practical applications. The research on connection between individual goals and motivation to improve value creating ability of the society and the study of social innovation reveal new aspects of competitiveness. Business, non-profit or public leaders can better synchronize their strategies with the expectation of consumers, communities and constituencies if their intentions to shape institutional settings fit better to the norms and conventions of the social and economic stakeholders.
Resumo:
The purpose of this study was to determine hope’s unique role, if any, in predicting persistence in a developmental writing course. Perceived academic self-efficacy was also included as a variable of interest for comparison because self-efficacy has been more widely studied than hope in terms of its non-cognitive role in predicting academic outcomes. A significant body of research indicates that self-efficacy influences academic motivation to persist and academic performance. Hope, however, is an emerging psychological construct in the study of non-cognitive factors that influence college outcomes and warrants further exploration in higher education. This study examined the predictive value of hope and self-efficacy on persistence in a developmental writing course. The research sample was obtained from a community college in the southeastern United States. Participants were 238 students enrolled in developmental writing courses during their first year of college. Participants were given a questionnaire that included measures for perceived academic self-efficacy and hope. The self-efficacy scale asked participants to self-report on their beliefs about how they cope with different academic tasks in order to be successful. The hope scale asked students to self-report on their beliefs about their capability to initiate action towards a goal (“agency”) and create a plan to attain these goals (“pathways”). This study utilized a correlational research design. A statistical association was estimated between hope and self-efficacy as well as the unique variance contributed by each on course persistence. Correlational analysis confirmed a significant relationship between hope and perceived academic self-efficacy, and a Fisher’s z-transformation confirmed a stronger relationship between the agency component of hope and perceived academic self-efficacy than for the pathways component. A series of multinomial logistic regression analyses were conducted to assess if (a) perceived self-efficacy and hope predict course persistence, (b) hope independent of self-efficacy predicts course persistence, and (c) if including the interaction of perceived self-efficacy and hope predicts course persistence. It was found that hope was only significant independent of self-efficacy. Some implications for future research are drawn for those who lead and coordinate academic support initiatives in student and academic affairs.
Resumo:
This study investigated the impact of an acute bout of physical activity on postexercise energy intake (PE-EI) in overweight females who were dieting with high restraint (D-HR) and non-dieting with either high restraint (ND-HR) or low restraint (ND-LR). PE-EI at lunch and 12-hours after was compared on the exercise (E) and a nonexercise (NE) day. There was a significant interaction (F (2,33)= 4.12, p = 0.025) of dieting/restraint status and condition (E vs. NE day) on the 12-hour El. The D-HR ate 519 ± 596 kcal more on the E than on the NE day; while the ND-HR ate 177 ± 392 kcal less on the E than on the NE day. The results of this study demonstrate that the impact of exercise on PE-EI is determined by both a physiological and psychological response. Dieting status, dietary restraint, level of disinhibition and cognitive factors may influence PE-EI and weight.
Resumo:
The purpose of this study was to determine hope’s unique role, if any, in predicting persistence in a developmental writing course. Perceived academic self-efficacy was also included as a variable of interest for comparison because self-efficacy has been more widely studied than hope in terms of its non-cognitive role in predicting academic outcomes. A significant body of research indicates that self-efficacy influences academic motivation to persist and academic performance. Hope, however, is an emerging psychological construct in the study of non-cognitive factors that influence college outcomes and warrants further exploration in higher education. This study examined the predictive value of hope and self-efficacy on persistence in a developmental writing course. The research sample was obtained from a community college in the southeastern United States. Participants were 238 students enrolled in developmental writing courses during their first year of college. Participants were given a questionnaire that included measures for perceived academic self-efficacy and hope. The self-efficacy scale asked participants to self-report on their beliefs about how they cope with different academic tasks in order to be successful. The hope scale asked students to self-report on their beliefs about their capability to initiate action towards a goal (“agency”) and create a plan to attain these goals (“pathways”). This study utilized a correlational research design. A statistical association was estimated between hope and self-efficacy as well as the unique variance contributed by each on course persistence. Correlational analysis confirmed a significant relationship between hope and perceived academic self-efficacy, and a Fisher’s z-transformation confirmed a stronger relationship between the agency component of hope and perceived academic self-efficacy than for the pathways component. A series of multinomial logistic regression analyses were conducted to assess if (a) perceived self-efficacy and hope predict course persistence, (b) hope independent of self-efficacy predicts course persistence, and (c) if including the interaction of perceived self-efficacy and hope predicts course persistence. It was found that hope was only significant independent of self-efficacy. Some implications for future research are drawn for those who lead and coordinate academic support initiatives in student and academic affairs.
Resumo:
We study the use of nominal suffixes of degree, such as -inho, -ão, -íssimo, -ílimo, -érrimo in written texts in Brazilian Portuguese, by focusing on semantic, cognitive, pragmatic and discourse aspects involved in using these suffixes. In general, we aim to identify semanticcognitive and discourse-pragmatic factors that motivate the usage of nominal suffixes of degree and to contribute for the study of degree in Portuguese class in Basic Education. The theoretical perspective underlying our research is the Linguística Funcional Centrada no Uso, as conceived by group of researchers of Discurso & Gramática (FURTADO DA CUNHA, BISPO, SILVA, 2013; MARTELOTTA, 2011). According to this theoretical model, language model uses the shape of the grammar of a language at the same time they are provisioned for it. In this sense, speech and grammar influence each other. In terms of methodology, we make an eminently qualitative research with quantitative support as evidence of use of trend. It is characterized also by descriptive and interpretive bias of the phenomenon under study. Empirical evidence from our analysis come from a corpus consisting of written texts from Veja magazine, January to June 2011 issues, particularly Carta do Leitor e Gente sections, the latter representative of the Coluna Social magazine. The results of our analysis showed that the use of nominal graders suffixes are related to semantic-cognitive factors (construction of certain text directions, the association more grounded aspects of concrete experience or the more abstract meanings, for example), the discourse-pragmatic issues (range certain communicative purposes, as critique, judge, mock, claim, involving the reader, seeking her membership of a particular point of view). In addition, we found that the use of these morphic elements in genres of the sample analyzed were related to the subjectivity of the writer and the inter-subjective issues involving writer and reader, as Traugott and Dasher (2002). Finally, we contemplate discussion about the approach of our object of study in Portuguese classes in Basic Education.
Resumo:
O presente trabalho descreve um estudo exploratório sobre a temática “Comportamentos de Risco no Tráfego Rodoviário” realizado a condutores da cidade de Bragança. Os principais objetivos direcionam-se para a identificação dos fatores cognitivos que mais influenciam a condução, das atitudes gerais e específicas de maior ou menor risco nos condutores de Bragança, e das crenças normativas e a intenção comportamental face à condução e aos comportamentos de risco. Para obter a informação necessária, foi usado o “Questionário baseado no modelo do Comportamento Planeado para a predição do comportamento de condução”, que foi realizado para a população portuguesa, e que a autora, Doutora Cristina Pimentão, permitiu a adaptação do mesmo ao tema da presente investigação. De uma forma geral, os resultados que se obtiveram evidenciam que o fator cognitivo que mais influencia o processo da condução é a atenção. Quanto às atitudes gerais, os comportamentos apontados que evidenciam maior risco são “A confiança na resposta do carro” e o “Excesso de confiança”, e os comportamentos que revelam menor risco são o cumprimento da regra de paragem completa num sinal de STOP e a discordância de que as pessoas que conduzem de forma agressiva estão mais atentas à condução. Por sua vez, nos resultados das atitudes específicas registam-se atitudes de indiferença, por parte dos inquiridos que responderam “Não concordo nem discordo” nas questões sobre “As campanhas que alertam para os efeitos do álcool são eficazes” e “Se o ensino das escolas de condução fosse adequado não teríamos condutores a conduzir sob a influência do álcool”. Já no que diz respeito às crenças normativas, verificaram-se resultados que apontam para expectativas de menor risco, pois na ótica dos condutores as pessoas que lhe são importantes esperariam deles comportamentos de menor risco. Paralelamente, os resultados sobre as intenções comportamentais traduzem baixas intenções de praticar o comportamento de risco, excetuando no item “É provável que eu venha conduzir um automóvel sob o efeito do álcool”, em que um número considerável de inquiridos respondeu que seria provável e muito provável a intenção de praticar este comportamento de risco. Os resultados são claros relativamente ao consumo de álcool e à sua influência no comportamento dos condutores, sendo necessário e urgente uma intervenção coerente e direcionada para a prevenção da ocorrência deste comportamento.
Resumo:
The purpose of this study was to identify the structural pathways of personal cognition and social context as they influence knowledge sharing behaviors in communities of practice. Based on the existing literature, ten hypotheses and a conceptual model built on the basis of the social cognitive theory were developed regarding the interrelationships of the five constructs: self-efficacy for knowledge sharing, outcome expectations, sense of community, leadership of a community, and knowledge sharing. The data were collected through an online questionnaire from the employees who have participated in communities of practice in a Fortune 100 corporation. A total of 438 usable questionnaires were collected. Overall, three analyses were conducted in order to prove the given hypotheses: (a) hypothesized measurement model fit, (b) relational and influential associations among the constructs, and (c) structural equation model analysis (SEM). In addition, open-ended responses were analyzed. The results presented that (a) hypothesized measurement models were valid and reliable, (b) personal cognitive factors, self-efficacy and outcome expectations for knowledge sharing, were found to be significant predictors of community members’ sense of community and knowledge sharing behaviors, (c) sense of community had the most significant impact on the knowledge sharing, (d) as the perceived social context, sense of community mediated the effects of personal cognition on knowledge sharing behaviors, and (e) personal cognition and social context jointly contributed to knowledge sharing. In brief, all of the hypotheses were positively supported. A conclusive summary is provided along with contributive discussion. Implications and contributions to HRD researchers and practitioners are discussed, and recommendations are provided.
Resumo:
The main purpose of the current study was to examine the role of vocabulary knowledge (VK) and syntactic knowledge (SK) in L2 listening comprehension, as well as their relative significance. Unlike previous studies, the current project employed assessment tasks to measure aural and proceduralized VK and SK. In terms of VK, to avoid under-representing the construct, measures of both breadth (VB) and depth (VD) were included. Additionally, the current study examined the role of VK and SK by accounting for individual differences in two important cognitive factors in L2 listening: metacognitive knowledge (MK) and working memory (WM). Also, to explore the role of VK and SK more fully, the current study accounted for the negative impact of anxiety on WM and L2 listening. The study was carried out in an English as a Foreign Language (EFL) context, and participants were 263 Iranian learners at a wide range of English proficiency from lower-intermediate to advanced. Participants took a battery of ten linguistic, cognitive and affective measures. Then, the collected data were subjected to several preliminary analyses, but structural equation modeling (SEM) was then used as the primary analysis method to answer the study research questions. Results of the preliminary analyses revealed that MK and WM were significant predictors of L2 listening ability; thus, they were kept in the main SEM analyses. The significant role of WM was only observed when the negative effect of anxiety on WM was accounted for. Preliminary analyses also showed that VB and VD were not distinct measures of VK. However, the results also showed that if VB and VD were considered separate, VD was a better predictor of L2 listening success. The main analyses of the current study revealed a significant role for both VK and SK in explaining success in L2 listening comprehension, which differs from findings from previous empirical studies. However, SEM analysis did not reveal a statistically significant difference in terms of the predictive power of the two linguistic factors. Descriptive results of the SEM analysis, along with results from regression analysis, indicated to a more significant role for VK.
Resumo:
The topic of the thesis is media discourse about current state if income inequality in the US, and political ideologies as influences behind the discourse. The data consists of four opinion articles, two from CNN and two from Fox News. The purpose of the study was to examine how media represents income inequality as an issue, and if the attitudes conveyed are concerned or indifferent. Previous studies have indicated that the level of income is often seen as a personal responsibility, and such perspective can be linked with Republican ideology. In contrast, the Democrats typically express more concern about the consequences of inequality. CNN has been previously considered to have a Democratic bias, and Fox News has been considered to have Republican bias, which is one reason why these two news channels were chosen as the sources of the data. The study is a critical discourse analysis, and the methods applied were sociocognitive approach, which analyzes the social and cognitive factors affecting the discourse, and appraisal framework, which was applied to scrutinize the expressed attitudes more closely by identifyind specific linguistic features. The appraisal framework includes studying such features as affect, judgment and appreciation, which offer a more detailed analysis on the attitudes present in the articles. The sociocognitive approach, additionally, offers a way of analyzing a more broad context affecting the articles. The findings were then compared, to see if there are differences between the articles, or between the news sites with alleged bias. The findings showed that CNN, with alleged Democratic bias, had a more symphatetic attitude towards income inequality, whereas Fox News, with more Republican views, showed clearly less concern towards the issue. Moreover, the Fox News articles had such dubious claims that the underlying ideology behind the articles could be even supporting of income inequality, as it allows the rich to pursue all the wealth they can without having to give anything away. The results, thus, suggest that the political ideologies may a significant effect on media discourse, which, in turn, may have a significant effect on the attitudes of the public towards great issues that could require prompt measures.