Methodological issues in the use of the concurrent activities paradigm

This paper presents a critical analysis of one type of dual-task procedure, the lateralized concurrent activities paradigm. Extrinsic and intrinsic factors that may influence the interpretation of results obtained with this paradigm are isolated and methodological refinements in experimental design and analysis are suggested.     

Leader-Member Exchange and Transformational Leadership: An Empirical Examination of Innovative Behaviors in Leader-Member Dyads

This paper evoked leader-member exchange (LMX) and transformational leadership theories to explain innovative behavior in leader-member dyads. Data from 225 leader-member dyads in a Fortune 500 manufacturing plant found exchange quality to be positively related to follower autonomy, leader support of followers, and follower commitment to the organization. Further, followers who were supported by their leaders and who were committed to the organization were more likely to be innovative. Also, exchange quality was directly related to innovative behaviors. Contrary to expectations, transformational leadership was negatively related to innovative behaviors of followers.     

Motor adaptation and manual transfer: Insight into the persistent nature of sensorimotor representations

It is well known that sensorimotor memories are built and updated through experience with objects. These representations are useful to anticipatory and feedforward control processes that preset grip and load forces during lifting. When individuals lift objects with qualities that are not congruent with their memory-derived expectations, feedback processes adjust motor plans to achieve successful lifts and contribute to the updating of the stored representations. The two experiments presented examine motor adaptation to an illusory size–weight lifting task, and the transfer of this motor adaptation to the unexposed hand. In Experiment 1, performers acquired motor adaptation with their right hand and transfer was measured on their left hand. In Experiment 2, adaptation was acquired with the left hand and transfer was measured on the right hand. In order to investigate the persistence of sensorimotor memories, these experiments measure adaptation, retention, and transfer after 15 min and 24 h delay periods. Both experiments confirm that experience with objects leads to adaptation of force scaling processes, that these adaptations transcend effector and are persistent. The results are discussed in terms favouring interpretations that describe motor adaptations to illusion as being centrally available.     

Can fabricated evidence induce false eyewitness testimony?

False information can influence people's beliefs and memories. But can fabricated evidence induce individuals to accuse another person of doing something they never did? We examined whether exposure to a fabricated video could produce false eyewitness testimony. Subjects completed a gambling task alongside a confederate subject, and later we falsely told subjects that their partner had cheated on the task. Some subjects viewed a digitally manipulated video of their partner cheating; some were told that video evidence of the cheating exists; and others were not told anything about video evidence. Subjects were asked to sign a statement confirming that they witnessed the incident and that their corroboration could be used in disciplinary action against the accused. See‐video subjects were three times more likely to sign the statement than Told‐video and Control subjects. Fabricated evidence may, indeed, produce false eyewitness testimony; we discuss probable cognitive mechanisms. Copyright © 2009 John Wiley & Sons, Ltd.     

Keeping the vermin out: Perceived disease threat and ideological orientations as predictors of exclusionary immigration attitudes

Integrating evolutionary and social representations theories, the current study examines the relationship between perceived disease threat and exclusionary immigration attitudes in the context of a potential avian influenza pandemic. This large‐scale disease provides a realistic context for investigating the link between disease threat and immigration attitudes. The main aim of this cross‐sectional study (N = 412) was to explore mechanisms through which perceived chronic and contextual disease threats operate on immigration attitudes. Structural equation models show that the relationship between chronic disease threat (germ aversion) and exclusionary immigration attitudes (assimilationist immigration criteria, health‐based immigration criteria and desire to reduce the proportion of foreigners) was mediated by ideological and normative beliefs (social dominance orientation, belief in a dangerous world), but not by contextual disease threat (appraisal of avian influenza pandemic threat). Contextual disease threat only predicted support for health‐based immigration criteria. The conditions under which real‐life disease threats influence intergroup attitudes are scrutinized. Convergence and dissimilarity of evolutionary and social representational approaches in accounting for the link between disease threat and immigration attitudes are discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

Interfaith etiquette in an age of Islamophobia

Islamophobia represents one of the greatest moral dilemmas of our time. Anti‐Muslim hostility and hatred, driven by racism, has manifested itself in exclusionary, discriminatory, and violent actions toward Muslims and those perceived as Muslims. By most metrics, Islamophobia in the United States is only getting worse. This article draws on Krister Stendahl's rules of interfaith engagement as a means of offering Christians a blueprint for how to reach out and engage with their Muslim neighbors in an age of Islamophobia.     

The interplay between social dominance orientation and intergroup contact in explaining support for multiculturalism

In two studies, we tested whether social dominance orientation (SDO) and intergroup contact interacted in shaping support for multiculturalism. Study 1 was correlational, while in Study 2 we measured SDO and experimentally manipulated intergroup contact (imagined contact paradigm). We found that SDO and intergroup contact interacted on support for multiculturalism: Intergroup contact was associated with more support for multiculturalism only for high‐SDO individuals, and SDO was negatively associated to support for multiculturalism more strongly for individuals with low or no contact. Finally, we discussed the role of the intergroup setting in which studies are conducted.