Cross‐valence inhibition in forming and retrieving ambivalent attitudes

Many things in life are ambivalent, and it might sometimes be useful or necessary to ignore their positive attributes when judging their negative attributes and vice versa. Cross-valence inhibition may complicate this task, leading people to underestimate the positive and negative attributes of ambivalent stimuli. In three studies (total N = 155), participants learned to associate combined evaluative information (gains and losses) with attributes of unfamiliar objects (size and colour of Chernoff faces). Participants then estimated (Studies 1–3) or experienced and recalled (Study 3) the gains and losses associated with novel ambivalent attribute combinations. As predicted, both in estimation and recall, participants rated gains (losses) to be lower, the higher the losses (gains) associated with the stimulus. The effect occurred only when the two attributes were evaluatively conflicting (Study 2). Cross-valence inhibition might lead to maladaptive behaviour when positive and negative attributes are in fact separable in hedonic experience

Mental health of asylum seekers and refugees: The role of trauma and postmigration living difficulties and the moderating effect of intergroup contact

Refugees undergo traumatic events during the premigration and transit phases and also experience severe difficulties after resettlement in a new country, and they are therefore at high risk of developing mental health problems. The present studies examined if intergroup contact with members of the receiving society moderates these negative impacts on refugees’ mental health. Two studies with refugees in Switzerland (N = 262) revealed both buffering and exacerbating effects of intergroup contact. Having more Swiss friends was associated with a less negative relationship between postmigration living difficulties and mental health. Surprisingly, having more Swiss friends was also associated with a more negative relationship between traumatization and mental health. These results suggest that intergroup contact may help refugees adjust to the living conditions in the receiving society, but may pose a risk regarding trauma-related disorders

Probabilities of cooperative moves in all 67 symmetric ordinal two-player two-moves games

The symmetric 2x2 one-shot game is one of the simplest and most commonly used representations of strategic conflict. Among others, it includes the prisoner’s dilemma, the game of chicken, the volunteer’s dilemma, and the assurance game. All of these games share three characteristics: (1) both players have to make a single choice between two options; (2) they decide simultaneously; and (3) the payoff structure is symmetric. Typically, social scientists who examine (symmetric) 2x2 one-shot games either focus on one game or compare a small number of such games. There are comparatively few studies which analyzed (symmetric) 2x2 one-shot games in a more comprehensive manner. The goal of the present paper is to initiate research on the strategies people use to play any or all symmetric ordinal two-player two-moves games. We propose comparisons between eight different strategies. As will be shown, this analysis lays the groundwork for many possible follow-up projects

The Role of Certainty in a Two-Person Volunteer’s Dilemma

In the standard volunteer’s dilemma (VoD), a single prosocial act (i.e., volunteering) yields the optimal overall outcome. Whereas the volunteer’s outcome is certain, the defector’s outcome depends on what others do. This research addressed the confounding of prosocial responses with uncertainty avoidance in the standard VoD. In Experiment 1, participants (N = 102) considered 18 hypothetical one-shot two-person VoD scenarios with certain, risky, and uncertain outcomes when volunteering. In Experiment 2, participants (N = 496) considered three hypothetical one-shot two-person VoD scenarios; a certain VoD and two uncertain VoDs of which one had a lower expected collective outcome of volunteering than the certain VoD and the other a higher one. Results suggest that volunteering does not reflect a desire to avoid uncertainty but to maximize expected collective outcomes, reinforcing the assumption that the high volunteering rates we see in a standard VoD are due to social/moral preferences and social projection

Power at work: Linking objective power to psychological power

Experimental research conducted with student participants has documented that feeling powerful or powerless (psychological power) affects outcomes with high practical relevance for organizations. However, it is unclear how results from these studies can be generalized to organizational settings in which individuals have various roles that imply more or less objective power. To address this gap, we present a theoretical framework to aid in the understanding of how objective power in organizations affects psychological power. We assume that stable differences in organizational rank (i.e., structural power) determine the likelihood of interactions with superiors, subordinates, or peers. These interactions give rise to within-person variation in situational power which should lead to dynamic fluctuations of psychological power and eventually its outcomes. Results of a preregistered experiment (n = 190 participants) and a preregistered experience sampling study (n = 129 participants) conducted with working adults support our key predictions: Structural power was associated with the likelihood of being in a high power versus low power situation. Within-person differences in situational power were related to feelings of power such as judgments about (1) one's own ability to influence others in a given social situation (i.e., interpersonal power) and (2) one's own competence, agency, autonomy, and independence (i.e., personal power)

The role of certainty in a two-person volunteer’s dilemma

In the standard volunteer’s dilemma (VoD), a single prosocial act (i.e., volunteering) yields the optimal overall outcome. Whereas the volunteer’s outcome is certain, the defector’s outcome depends on what others do. This research addressed the confounding of prosocial responses with uncertainty avoidance in the standard VoD. In Experiment 1, participants (N = 102) considered 18 hypothetical one-shot two-person VoD scenarios with certain, risky, and uncertain outcomes when volunteering. In Experiment 2, participants (N = 496) considered three hypothetical one-shot two-person VoD scenarios; a certain VoD and two uncertain VoDs of which one had a lower expected collective outcome of volunteering than the certain VoD and the other a higher one. Results suggest that volunteering does not reflect a desire to avoid uncertainty but to maximize expected collective outcomes, reinforcing the assumption that the high volunteering rates we see in a standard VoD are due to social/moral preferences and social projection

Judenfeindschaften – Alte Vorurteile und moderner Antisemitismus

Zuerst erschienen im Dietz-Verlag: Ullrich, Peter; Decker, Oliver; Kiess, Johannes; Brähler, Elmar: Judenfeindschaften – Alte Vorurteile und moderner Antisemitismus. - In: Decker, Oliver; Kiess, Johannes; Brähler, Elmar (Hrsg.): Die Mitte im Umbruch : rechtsextreme Einstellungen in Deutschland. - Bonn: Dietz, 2012. - ISBN: 978-3-8012-0429-7. - S. 68–86

Bio-inspired materials to control and minimise insect attachment

More than three quarters of all animal species on Earth are insects, successfully inhabiting most ecosystems on the planet. Due to their opulence, insects provide the backbone of many biological processes, but also inflict adverse impacts on agricultural and stored products, buildings and human health. To countermeasure insect pests, the interactions of these animals with their surroundings have to be fully understood. This review focuses on the various forms of insect attachment, natural surfaces that have evolved to counter insect adhesion, and particularly features recently developed synthetic bio-inspired solutions. These bio-inspired solutions often enhance the variety of applicable mechanisms observed in nature and open paths for improved technological solutions that are needed in a changing global society