Posttraumatic Giant Macular Hole

Introduction: Large macular holes secondary to blunt trauma are sometimes seen in young patients within the spectrum of alterations produced by ocular trauma. Methods: Observational case report. A 32-year-old woman who had received a blunt trauma (a blow from a fist) to her right eye 10 years previously had experienced a decrease in visual acuity ever since. Results: Clinical photographs, fluorescein angiography and optic coherent tomography images revealed a very large macular hole of approximately 1,920 µm in diameter. Conclusion: This case is an uncommonly large variant of a macular hole secondary to blunt trauma in a young patient

An empirical study of the determinants of Internet Banking adoption among Brazilians non-users

Este estudo investiga os fatores determinantes da adoção de Internet Banking entre não usuários brasileiros. Para tanto propõe-se um modelo que reúne os constructos dos modelos mais conhecidos de adoção de novas tecnologias da literatura de marketing. O modelo foi testado com amostra de 292 pessoas e os resultados revelam que os efeitos de oito variáveis sobre a intenção de usar o Internet Banking são significativos. São elas compatibilidade com estilo de vida, normas subjetivas, auto-eficácia, imagem, vantagem relativa de segurança e privacidade, vantagem relativa de controle, testagem e suporte tecnológico. Por outro lado, os efeitos das características individuais incluídas no modelo não se mostram significativos. A maior contribuição do estudo é a proposta de um modelo abrangente, simples e facilmente implementável. O estudo conclui apontando algumas implicações gerenciais, limitações e sugestões para estudos futuros.This study investigates the determinants of Internet Banking adoption among Brazilians non-users. To accomplish this objective, the study proposes a model built with constructs gathered from the most known models of new technology adoption found in the marketing literature. The model was tested among a sample of 292 people and the results show that the effects of eight variables were significant in determining the intention to adopt Internet Banking. They are compatibility with lifestyle, subjective norm, self-efficacy, image, relative advantage of security and privacy, relative advantage of control, trialability, and technological support. By the other side, none of the individual characteristics included in the model were significant. The major contribution of the study is the proposal of a comprehensive, simple, and easily implementable model. The study concludes by pointing some managerial implications, limitations, and suggestions for future studies

Evidencias de validez para la flow state scale-2 en atletas universitarios

Flow is an optimal psychological state, a very positive experience associated with high levels of performance in various areas of human activity such as sports. This study sought evidence for the construct validity of the Brazilian version of FSS-2 and, in this way, contribute with theoretical and empirical resources for the research and professional practice of Brazilian psychologists in the field of sports and physical exercise. This instrument provides a global measure and specifically measures nine dimensions of the flow experience. The participants were 366 athletes, men and women, 16-41 years of age, who played futsal, handball, volleyball and rugby and disputed the University Games Gaúchos 2015. The scores of the subjects were subjected to Confirmatory Factor Analysis. Indices of content, factorial, convergent and discriminant validities and internal consistency were found, discussed according to theoretical and empirical data from this line of research. We conclude that the general adjustments of the model were close to those obtained in the original studies.O flow é uma experiência muito positiva, um estado psicológico ótimo que está associado a elevados níveis de desempenho em várias áreas de atuação humana como o esporte. Este estudo buscou evidências de validade de construto para a versão brasileira da FSS-2 e, desta forma, contribuir com subsídios teóricos e empíricos para a pesquisa e a prática profissional do psicólogo brasileiro no âmbito do desporto e do exercício físico. Participaram da pesquisa 366 atletas, homens e mulheres, de 16 a 41 anos de idade, do futsal, handebol, voleibol e rugby, que disputavam os Jogos Universitários Gaúchos 2015. Os escores da FSS-2 foram submetidos à Análise Fatorial Confirmatória. Foram encontrados indicativos de validades de conteúdo, fatorial, convergente e discriminante e de consistência interna e discutidas baseadas nos dados teóricos e empíricos dessa linha de pesquisa. Conclui-se que os ajustes gerais do modelo testado foram próximos aos obtidos nos estudos originais.El flow es un excelente estado psicológico, una experiencia muy positiva, asociado con altos niveles de rendimiento en diversas áreas de la actividad humana como la del deporte. Este estudio buscó evidencias de validez del constructo para la versión brasileña de la FSS-2 y, de esta forma, contribuir con los subsidios teóricos y empíricos para la investigación y la práctica profesional del psicólogo brasileño en el ámbito del deporte y del ejercicio físico. El instrumento proporciona nueve medidas específicas y una medida global de flow. En el estudio participaron 366 personas, hombres y mujeres, con edad de entre 16-41 años, jugadores de fútbol sala, balonmano, voleibol y rugby, que competían en los Juegos Universitarios Gaúchos 2015. Las puntuaciones de FSS-2 se sometieron a análisis factorial confirmatorio. Se encontraron indicios de validez de contenido, factorial, convergente y discriminante y de consistencia interna, que fueron analizados a partir de los datos teóricos y empíricos de esa línea de investigación. Se concluye que los ajustes generales del modelo comprobado fueron cercanos a los obtenidos en los estudios originales

Evidencias de Validez para la Flow State Scale-2 en Atletas Universitarios

Abstract: Flow is an optimal psychological state, a very positive experience associated with high levels of performance in various areas of human activity such as sports. This study sought evidence for the construct validity of the Brazilian version of FSS-2 and, in this way, contribute with theoretical and empirical resources for the research and professional practice of Brazilian psychologists in the field of sports and physical exercise. This instrument provides a global measure and specifically measures nine dimensions of the flow experience. The participants were 366 athletes, men and women, 16-41 years of age, who played futsal, handball, volleyball and rugby and disputed the University Games Gaúchos 2015. The scores of the subjects were subjected to Confirmatory Factor Analysis. Indices of content, factorial, convergent and discriminant validities and internal consistency were found, discussed according to theoretical and empirical data from this line of research. We conclude that the general adjustments of the model were close to those obtained in the original studies.Resumo: O flow é uma experiência muito positiva, um estado psicológico ótimo que está associado a elevados níveis de desempenho em várias áreas de atuação humana como o esporte. Este estudo buscou evidências de validade de construto para a versão brasileira da FSS-2 e, desta forma, contribuir com subsídios teóricos e empíricos para a pesquisa e a prática profissional do psicólogo brasileiro no âmbito do desporto e do exercício físico. Participaram da pesquisa 366 atletas, homens e mulheres, de 16 a 41 anos de idade, do futsal, handebol, voleibol e rugby, que disputavam os Jogos Universitários Gaúchos 2015. Os escores da FSS-2 foram submetidos à Análise Fatorial Confirmatória. Foram encontrados indicativos de validades de conteúdo, fatorial, convergente e discriminante e de consistência interna e discutidas baseadas nos dados teóricos e empíricos dessa linha de pesquisa. Conclui-se que os ajustes gerais do modelo testado foram próximos aos obtidos nos estudos originais.Resumen: El flow es un excelente estado psicológico, una experiencia muy positiva, asociado con altos niveles de rendimiento en diversas áreas de la actividad humana como la del deporte. Este estudio buscó evidencias de validez del constructo para la versión brasileña de la FSS-2 y, de esta forma, contribuir con los subsidios teóricos y empíricos para la investigación y la práctica profesional del psicólogo brasileño en el ámbito del deporte y del ejercicio físico. El instrumento proporciona nueve medidas específicas y una medida global de flow. En el estudio participaron 366 personas, hombres y mujeres, con edad de entre 16-41 años, jugadores de fútbol sala, balonmano, voleibol y rugby, que competían en los Juegos Universitarios Gaúchos 2015. Las puntuaciones de FSS-2 se sometieron a análisis factorial confirmatorio. Se encontraron indicios de validez de contenido, factorial, convergente y discriminante y de consistencia interna, que fueron analizados a partir de los datos teóricos y empíricos de esa línea de investigación. Se concluye que los ajustes generales del modelo comprobado fueron cercanos a los obtenidos en los estudios originales

Comparing transformational and instrumental leadership The influence of different leadership styles on individual employee and financial performance in Brazilian startups

Abstract Purpose – The purpose of this study is to investigate the influence of transformational and instrumental leadership on the individual performance of the employee and the financial performance in Brazilian startups. Design/methodology/approach – The adopted methodological construction strategy was structural equation modeling, with the purpose of applying the model to primary data collected from a sample of leaders of Brazilian startups (n = 126). Findings – Results suggest that when leadership types are analyzed separately, both directly influence employee performance. Originality/value – This study has four main contributions: to test the influence of the two leadership styles on employee performance and thus to help advance the theoretical understanding of leadership; to perform this test in the context of Brazilian startups; to equip professionals with more information about the effects of crucial leadership types on individual type of employee performance; and to expand knowledge for recruitment and managerial training in initial-stage companie

Development-based Trust: Proposing and Validating a New Trust Measurement Model for Buyer-Seller Relationships

This study proposes and validates a trust measurement model for buyer-seller relationships. Baptized as development-based trust, the model encompasses three dimensions of trust: calculus-based, knowledge-based and identification-based. In addition to recognizing that trust is a multidimensional construct, the model also assumes that trust can evolve to take on a different character depending on the stage of the relationship. In order to test the proposed model and compare it to the characteristic-based trust measurement model, the measure most frequently used in the buyer-seller relationship literature, data were collected from 238 clients of an IT product wholesaler. The results show that the scales are valid and reliable and the proposed development-based trust measurement model is superior to the characteristic-based trust measurement model in terms of its ability to explain certain variables of interest in buyer-seller relationships (long-term relationship orientation, information sharing, behavioral loyalty and future intentions). Implications for practice, limitations and suggestions for future studies are discussed