Intergroup contact and prejudice in Moroccan and Spanish users of Spanish public libraries: mediating variables and directionality of the process / Contacto intergrupal y prejuicio en usuarios marroquíes y españoles de bibliotecas públicas españolas: variables mediadoras y direccionalidad del proceso

This study tests two serial models of intergroup contact in intergroup relations between users of Spanish public libraries and the directionality of the contact-prejudice relationship. Participants were selected in libraries that meet IFLA Guidelines in Barcelona (N_Spaniards = 138 and N_Moroccans = 89) and libraries that do not meet these guidelines in Almería (N_Spaniards = 116 and N_Moroccans = 100). They responded to a survey about the quantity of intergroup contact, anxiety, ethnocultural empathy, outgroup knowledge and prejudice. Several serial mediation analyses reveal a model where the indirect effect of quantity of contact in the library on prejudice was mediated by intergroup anxiety and ethnocultural empathy in Moroccans in Almería and Spaniards and Moroccans in Barcelona, and it found that the direction of this relationship is from contact to attitudes, but not attitudes to contact. These results show that the mediating power of affective variables is stronger than that of cognitive variables. Explanations about the absence of significant results in Spaniards in the Almería group are provided.     

Innovación tecnológica,factores psicosociales y estrés en el puesto de trabajo: un estudio empírico

Resumen

Se realizó una investigación sobre el impacto de la innovación tecnológica de pantalla de ordenador sobre el nivel de estrés y otras variables relacionadas, en dos grupos de sujetos que se diferenciaban exclusivamente en la utilización o no de pantalla de ordenador en su trabajo. Los análisis mostraron diferencias entre los grupos en rendimiento, absentismo y conflitto de rol, aunque no se confirmaron totalmente las relaciones entre las variables estudiadas. Se discuten las implicaciones de los resultados para este tema de investigación.     

Interference Phenomena in Temporal Evolution of Accident Probability in Workplaces

The aim of this article is to investigate some implications of complexity in workplace risk assessment. Workplace is examined as a complex system, and some of its attributes and aspects of its behavior are investigated. Failure probability of various workplace elements is examined as a time variable and interference phenomena of these probabilities are presented. Potential inefficiencies of common perceptions in applying probabilistic risk assessment models are also discussed. This investigation is conducted through mathematical modeling and qualitative examples of workplace situations. A mathematical model for simulation of the evolution of workplace accident probability in time is developed. Its findings are then attempted to be translated in real-world terms and discussed through simple examples of workplace situations. The mathematical model indicates that workplace is more likely to exhibit an unpredictable behavior. Such a behavior raises issues about usual key assumptions for the workplace, such as aggregation. Chaotic phenomena (nonlinear feedback mechanisms) are also investigated for in simple workplace systems cases. The main conclusions are (1) that time is an important variable for risk assessment, since behavior patterns are complex and unpredictable in the long term and (2) that workplace risk identification should take place in a holistic view (not by work post).