Does remembering past ingroup harmdoing promote postwar cross‐group contact? Insights from a field‐experiment in Liberia

In the aftermath of the Liberian civil wars, we investigated whether it is possible to systematically influence how people construe their group's role during the conflict and how this affects intergroup emotions and behavioral intentions. In a field experiment, 146 participants were randomly assigned to think about incidents of violence during the war that were either committed by fellow ingroup members (perpetrator‐focus) or against fellow ingroup members (victim‐focus). Adopting a perpetrator‐focus led to greater willingness to engage in cross‐group contact, greater need for acceptance, and greater intergroup empathy. The focus manipulation did not affect participants' need for empowerment. Key message: Appraising the ingroup as “victim” or “perpetrator” after conflicts with reciprocal harmdoing is largely a matter of psychological construction. A promising avenue for promoting positive cross‐group contact consists in widening the ingroup's victim role by also remembering the harm that the ingroup inflicted upon others. This amplifies the need of acceptance, which leads to greater intergroup empathy and greater willingness to engage in cross‐group contact. Copyright © 2013 John Wiley & Sons, Ltd.     

Exploring the Interplay of Trait Self‐Control and Ego Depletion: Empirical Evidence for Ironic Effects

Trait self‐control (TSC) has been conceptualized as a general and abstract ability to exert self‐regulation across multiple domains that has mostly beneficial effects. However, its relationship to situational depletion of self‐regulatory resources has received little attention. We systematically explore the interplay of trait and situational self‐control in two studies (total N = 264). In contrast with a positive view of TSC, the results show greater ego depletion effects for high (vs. low) self‐control abilities across such diverse domains as candy consumption (Study 1), risk‐taking behaviour (Study 2) and achievement motivation (Study 2). It is proposed that these ironic effects are attributable to high‐TSC individuals' less frequent active inhibition of impulses in everyday life and their resulting lack of experience in resisting acute temptations. A third study (N> = 358) corroborated this general reasoning by showing that TSC is indeed associated with less frequent impulse inhibition in daily routines. Our data point to a downside of dispositional self‐control in ego depletion paradigms. Other explanations and potential future avenues for resolving inconsistent findings across the literature are discussed. Copyright © 2013 European Association of Personality Psychology     

Dogs’ use of the solidity principle: revisited

A wealth of comparative data has been accumulated over the past decades on how animals acquire and use information about the physical world. Domestic dogs have typically performed comparably poorly in physical cognition tasks, though in a recent study Kundey et al. (Anim Cogn 13:497–505, 2010) challenged this view and concluded that dogs understand that objects cannot pass through solid barriers. However, the eight subjects in the study of Kundey et al. may have solved the task with the help of perceptual cues, which had not been controlled for. Here, we tested dogs with a similar task that excluded these cues. In addition, unlike the set-up of Kundey et al., our set-up allowed the subjects to observe the effect of the solid barrier. Nevertheless, all 28 subjects failed to solve this task spontaneously and showed no evidence of learning across 50 trials. Our results therefore call into question the earlier suggestion that dogs have, or can acquire, an understanding of the solidity principle.     

Dogs learn to solve the support problem based on perceptual cues

Numerous recent studies have investigated how animals solve means-end tasks and unraveled considerable variation in strategies used by different species. Domestic dogs (Canis familiaris) have typically performed comparably poorly in physical cognition tasks, but a recent study showed that they can solve the on–off condition of the support problem, where they are confronted with two boards, one with a reward placed on it and the other with a reward placed next to it. To explore which strategies dogs use to solve this task, we first tested 37 dogs with the on–off condition tested previously and then tested subjects that passed this condition with three transfer tasks. For the contact condition, the inaccessible reward was touching the second board. For the perceptual containment condition, the inaccessible reward was surrounded on three sides by the second board, but not supported by it, whereas for the gap condition, discontinuous boards were used. Unlike in the previous study, our subjects did not perform above chance level in the initial trials of the on–off condition, but 13 subjects learned to solve it. Their performance in the transfer tasks suggests that dogs can learn to solve the support problem based on perceptual cues, that they can quickly adopt new cues when old ones become unreliable, but also that some apparently inherent preferences are hard to overcome. Our study contributes to accumulating evidence demonstrating that animals typically rely on a variety of perceptual cues to solve physical cognition tasks, without developing an understanding of the underlying causal structure.     

Dogs’ attention towards humans depends on their relationship, not only on social familiarity

Both in humans and non-human animals, it has been shown that individuals attend more to those they have previously interacted with and/or they are more closely associated with than to unfamiliar individuals. Whether this preference is mediated by mere social familiarity based on exposure or by the specific relationship between the two individuals, however, remains unclear. The domestic dog is an interesting subject in this line of research as it lives in the human environment and regularly interacts with numerous humans, yet it often has a particularly close relationship with its owner. Therefore, we investigated how long dogs (Canis familiaris) would attend to the actions of two familiar humans and one unfamiliar experimenter, while varying whether dogs had a close relationship with only one or both familiar humans. Our data provide evidence that social familiarity by itself cannot account for dogs’ increased attention towards their owners since they only attended more to those familiar humans with whom they also had a close relationship.     

Communication Modality and Biased Processing: A Study on the Occasion of the German 2002 Election TV Debate

Participants were presented with a segment of the 2002 Schroeder-Stoiber TV debate, in which the two candidates running for the post of German Chancellor argued for clearly different positions. Prior to presentation of the segment in either audiovisual, audio, or written modality, participants' politician preference was measured. Position agreement and valence of thoughts about the candidates' specific statements were found to be affected by politician preference in all three modalities. However, as shown by a modality by preference interaction, the effect of politician preference on position agreement was stronger in audio and audiovisual modalities than in the written modality. Similar interactions were found regarding the valence of thoughts broadly related to the issue discussed as well as regarding the valence of thoughts related to the two candidates themselves. Taken together with further path analyses, these findings are interpreted as showing biased processing across modalities, with the broadcast modalities intensifying this bias due to the heightened salience of nonverbal politician-related cues.     

Somatoforme Schmerzstörung am Beispiel des chronischen Unterbauchschmerzes der Frau

In this review we discuss the psychological dimension of chronic pelvic pain in women. We give an overview of the psychopathology of the disease. The psychosomatic correlations of this complex syndrome are discussed. The diagnostic criteria of somatoform pain disorder are relevant for a large number of patients. The psychotherapeutic approaches are described. Psychosomatic knowledge is very helpful in the management of chronic pelvic pain in women. It helps to avoid unnecessary operations and contributes to a satisfying doctor-patient-relationship.     

Modelling perceptions of criminality and remorse from faces using a data-driven computational approach

Perceptions of criminality and remorse are critical for legal decision-making. While faces perceived as criminal are more likely to be selected in police lineups and to receive guilty verdicts, faces perceived as remorseful are more likely to receive less severe punishment recommendations. To identify the information that makes a face appear criminal and/or remorseful, we successfully used two different data-driven computational approaches that led to convergent findings: one relying on the use of computer-generated faces, and the other on photographs of people. In addition to visualising and validating the perceived looks of criminality and remorse, we report correlations with earlier face models of dominance, threat, trustworthiness, masculinity/femininity, and sadness. The new face models of criminal and remorseful appearance contribute to our understanding of perceived criminality and remorse. They can be used to study the effects of perceived criminality and remorse on decision-making; research that can ultimately inform legal policies.     

Is a local sample internationally representative? Reproducibility of four cognitive tests in family dogs across testing sites and breeds

A fundamental precept of the scientific method is reproducibility of methods and results, and there is growing concern over the failure to reproduce significant results. Family dogs have become a favoured species in comparative cognition research, but they may be subject to cognitive differences arising from genetic (breeding lines) or cultural differences (e.g. preferred training methods). Such variation is of concern as it affects the validity and generalisability of experimental results. Despite its importance, this problem has not been specifically addressed to date. Therefore, we aimed to test the influence of three factors on reproducibility: testing site (proximal environment), breed and sex (phenotype). The same experimenter tested cognitive performance by more than 200 dogs in four experiments. Additionally, dogs’ performance was tested in an obedience task administered by the owner. Breed of dog and testing site were found to influence the level of performance only mildly, and only in a means-end experiment and the obedience task. Our findings demonstrate that by applying the same test protocols on sufficiently large samples, the reported phenomena in these cognitive tests can be reproduced, but slight differences in performance levels can occur between different samples. Accordingly, we recommend the utilisation of well-described protocols supported by video examples of the whole experimental procedure. Findings should focus on the main outcome variables of the experiments, rather than speculating about the general importance of small or secondary performance outcomes which are more susceptible to random or local noise.