Left inferior frontal cortex can compensate the inhibitory functions of right inferior frontal cortex and pre-supplementary motor area

Right-IFG and pre-SMA are associated with inhibitory responses. We used functional Magnetic Resonance Imaging to explore whether the contralateral homotopic regions can functionally replace them. An adolescent, with an extensive traumatic lesion of the right cerebral hemisphere having occurred 5 years earlier, performed a motor response inhibition task (Go/Nogo), which was properly accomplished and associated to activations in the left-IFC, precuneus and occipital cortex. Such functional remodelling is in line with the theory of ‘near equipotentiality’ of the cerebral hemispheres.     

Morality shifting in the context of intergroup violence

We propose morality shifting as a mechanism through which individuals can maintain a moral image of the ingroup. We argue that a shift from the moral principles of harm and fairness to those of loyalty and authority occurs when assessing a potentially threatening event, particularly among high ingroup glorifiers. Three studies confirmed this hypothesis using three different methodologies. Study 1 compared the use of language related to four moral foundations formulated in moral psychology in response to ingroup‐ and outgroup‐committed wrongdoings. Results showed that loyalty‐ and authority‐related words were used more, whereas harm‐ and fairness‐related words were used less in response to ingroup‐ compared with outgroup‐committed wrongdoings. Study 2 replicated this effect with regards to the cognitive accessibility of these moral principles. Study 3 confirmed that morality shifting is a motivated response to social identity threat, rather than a response to mere activation of social identity. Finally, as predicted, Study 3 demonstrated the effect of morality shifting to be moderated by ingroup glorification but not ingroup attachment. Implications and consequences for intergroup and individual wrongdoings, as well as for intergroup relations, are discussed. Copyright © 2011 John Wiley & Sons, Ltd.     

Remembering object position in the absence of vision: egocentric, allocentric, and egocentric decentred frames of reference

In three experiments we examined whether memory for object locations in the peri-personal space in the absence of vision is affected by the correspondence between encoding and test either of the body position or of the reference point. In particular, the study focuses on the distinction between different spatial representations, by using a paradigm in which participants are asked to relocate objects explored haptically. Three frames of reference were systematically compared. In experiment 1, participants relocated the objects either from the same position of learning by taking as reference their own body (centred egocentric condition) or from a 90 degrees decentred position (allocentric condition). Performance was measured in terms of linear distance errors and angular distance errors. Results revealed that the allocentric condition was more difficult than the centred egocentric condition. In experiment 2, participants performed either the centred egocentric condition or a decentred egocentric condition, in which the body position during the test was the same as at encoding (egocentric) but the frame of reference was based on a point decentred by 90 degrees. The decentred egocentric condition was found to be more difficult than the centred egocentric condition. Finally, in experiment 3, participants performed in the decentred egocentric condition or the allocentric condition. Here, the allocentric condition was found to be more difficult than the decentred egocentric condition. Taken together, the results suggest that also in the peripersonal space and in the absence of vision different frames of reference can be distinguished. In particular, the decentred egocentric condition involves a frame of reference which seems to be neither allocentric nor totally egocentric.     

Real and Virtual Clinical Trials: A Formal Analysis

Topoi - If well-designed, the results of a Randomised Clinical Trial (RCT) can justify a causal claim between treatment and effect in the study population; however, additional information might be...     

On defeating death: Group reification and social identification as immortality strategies

This chapter investigates the role of social identification in the management of human beings' existential concerns. We begin by presenting an overview of Terror Management Theory (TMT). This theory addresses the mechanisms that individuals have developed to prevent, or at least lessen, the anxiety deriving from the uniquely human ability to foresee one's death. We then present two perspectives concerning the role of social identities as anxiety-buffer mechanisms. A first one, which falls more squarely within TMT, suggests that social identities are functional in obtaining self-esteem (one of the two anxiety-buffer mechanisms proposed by TMT). A second perspective grants a more independent role to social identities. In this perspective, individuals seek transcendence by becoming a part of reified entities that are larger and longer lasting than the individual self. Findings emerging from these two lines of research are presented, along with an analysis of the relationship between identity, death anxiety, and immortality, from a historical and cross-cultural perspective.     

Saccadic eye movements do not trigger a joint Simon effect

Psychonomic Bulletin & Review - Although the joint Simon task (JST) has been investigated for more than a decade, its cause is still unclear. According to ideomotor views of action control,...