The interplay between feedback-related negativity and individual differences in altruistic punishment: An EEG study

To date, the interplay betwexen neurophysiological and individual difference factors in altruistic punishment has been little understood. To examine this issue, 45 individuals participated in a Dictator Game with punishment option while the feedback-related negativity (FRN) was derived from the electroencephalogram (EEG). Unlike previous EEG studies on the Dictator Game, we introduced a third party condition to study the effect of fairness norm violations in addition to employing a first person perspective. For the first time, we also examined the role of individual differences, specifically fairness concerns, positive/negative affectivity, and altruism/empathy as well as recipients’ financial situation during altruistic punishment. The main results show that FRN amplitudes were more pronounced for unfair than for fair assignments in both the first person and third party perspectives. These findings suggest that FRN amplitudes are sensitive to fairness norm violations and play a crucial role in the recipients’ evaluation of dictator assignments. With respect to individual difference factors, recipients’ current financial situation affected the FRN fairness effect in the first person perspective, indicating that when being directly affected by the assignments, more affluent participants experienced stronger violations of expectations in altruistic punishment decisions. Regarding individual differences in trait empathy, in the third party condition FRN amplitudes were more pronounced for those who scored lower in empathy. This may suggest empathy as another motive in third party punishment. Independent of the perspective taken, higher positive affect was associated with more punishment behavior, suggesting that positive emotions may play an important role in restoring violated fairness norms.     

Concepts are not represented by conscious imagery

According to theories of grounded cognition, conceptual representation and perception share processing mechanisms. We investigated whether this overlap is due to conscious perceptual imagery. Participants filled out questionnaires to assess the vividness of their imagery (Questionnaire on Mental Imagery) and the extent to which their imagery was object oriented and spatially oriented (Object-Spatial Imagery Questionnaire), and they performed a mental rotation task. One week later, they performed a verbal property verification task. In this task, involvement of modality-specific systems is evidenced by the modality-switch effect, the finding that performance on a target trial (e.g., apple—green) is better after a same-modality trial (e.g., diamond—sparkle) than after a different-modality trial (e.g., airplane—noisy). Results showed a modality-switch effect, but there was no systematic relation between imagery scores and modality switch. We conclude that conscious mental imagery is not fundamental to conceptual representation.     

Removal of epileptically compromised tissue in the frontal cortex restores oculomotor selection in the antisaccade task

The frontal cortex is heavily involved in oculomotor selection. Here, we investigated the neural correlates of eye movement selection during an antisaccade task in a young epileptic patient in whom the seizure focus included the frontal cortex and affected its function. Before resection surgery, the patient had difficulty in performing correct antisaccades towards the visual field contralateral to the seizure focus. Because the FEF is the only area in the human frontal cortex that is known to have a lateralized oculomotor function in the antisaccade task, this behavioural imbalance between the two visual fields suggests a disruption of FEF functioning by the nearby seizure focus. Electrocorticographic recordings at the seizure focus indeed showed that the seizure focus interfered with correct antisaccade performance. These results were in line with fMRI recordings revealing less task-related frontal activity for the hemisphere of the seizure focus, possibly reflecting diminished top-down engagement of the oculomotor system. Two months after removal of the compromised tissue, the seizures had disappeared, and antisaccade performance was the same for both visual hemifields. We conclude that a seizure focus in the frontal cortex can induce a dysfunction in the selection of eye movements, which is resolved after removal of interfering tissue.     

A pictorial attitude IAT as a measure of implicit motives

We tested the hypothesis that a pictorial attitude variant of the Implicit Association Test (PA‐IAT) is a valid measure of implicit motives. The PA‐IAT aims to capture attitudes towards pictures that are related to implicit motives. In the first two studies, we showed that the pictorial attitude Implicit Association Test (IAT) correlated more highly with non‐IAT measures of implicit motives than other IAT variants. In the third study, we established the validity of the PA‐IAT experimentally and showed that the pictorial attitude IAT correlated with non‐declarative behavioural measures only if implicit motives were aroused. Copyright © 2010 John Wiley & Sons, Ltd.     

An attempt towards differentiating attentional deficits in traumatic brain injury

Attentional deficits in patients suffering traumatic brain injury (TBI) can occur with minor to severe impact to the brain. Based on reviews of both the cognitive and neurobehavioral literature, the following three concepts of attention are addressed: (a) arousal/alertness, (b) selective attention, and (c) energetic aspects of attention, which include such components as effort, resource allocation, and speed of processing. Within each concept, definitions are proposed, the underlying brain mechanisms are identified, and the specific deficits associated with TBI are explored. This review combines theoretical perspectives and clinical findings with the objective of leading toward a diagnostic differentiation that in turn will benefit treatment planning.     

Contextual and sequential effects on judgments of sweetness intensity

Presenting stimuli from skewed concentration distributions affects mean responses on category scales. However, if the number of categories on the response scale is increased, the degree of separation between the mean responses obtained for a positively as opposed to a negatively skewed concentration distribution diminishes. The present study investigates the effect of skewed concentration distributions upon ratings on a line scale and compares it to the context effect found for a 7-point category scale. In addition, sequential dependencies between consecutive stimuli and responses are investigated in order to assess their relevance in tasteintensity scaling studies. The context effects are similar for the 7-point category scale and for the line scale. The analyses of sequential effects show that both preceding responses and preceding stimuli affect current responses. However, since these two factors work in opposite directions, only a small contrast effect from the previous stimulus is significant in an overall analysis. The present study shows that even though the overall sequential effects between consecutive stimuli and responses are small, the effect of experimental context may be considerable. Since subjective context is established at the beginning of a session and sequential dependencies operate throughout the whole session, it is argued that contextual and sequential effects are only indirectly related.     

Understanding the Development of Team Identification: A Qualitative Study in UN Peacebuilding Teams

Purpose

The goal of our study was to scrutinize the psychological processes that occur in individuals when developing identification with a highly diverse team.

Design/Methodology/Approach

A qualitative, theory-generating approach following the principles of grounded theory was chosen as research design. Data were obtained from 63 personal interviews with members of seven UN peacebuilding teams in Liberia and Haiti. These teams were particularly well suited for analyzing the dynamics of identification processes as they constitute extreme cases with respect to team members’ identity diversity.

Findings

Our analysis reveals four different processes that occur as individuals develop team identification (TI): enacting a salient identity, sensemaking about team experience, evaluating collective team outcomes, and converging identity.

Implications

We can show that team members engage in both individual- and collective-directed sensemaking processes during TI development, thereby using internal (i.e., other team members) and external points of reference (i.e., team-external actors) for ingroup/outgroup comparisons. Moreover, our study reveals different modes of identity convergence (i.e., active, reactive, and withdrawal) which are associated with different types of TI (i.e., deep-structured TI, situated TI, and disidentification).

Originality/Value

Although team members’ identification with their workgroup has long been considered important for effective team functioning, knowledge about its development has remained limited and largely without empirical footing from a real-world team context. Our study represents the first empirical attempt to inductively identify the processes that occur in individuals as they develop TI.