Fairness,Self‐Interest,and Cooperation in a Real‐Life Conflict1

Effects of procedural fairness and self‐interest on cooperation vs. hardness in an urban planning conflict were examined in a questionnaire study. The self‐interest perspective posits that people seek to maximize their outcomes and, therefore, cooperate only when they can gain advantages or avoid disadvantages by doing so, while fairness models of cooperation view cooperative actions as based mainly on justice motives. The data give strong support for the fairness hypothesis, showing that self‐interest accounts only for hard strategies, whereas justice motives explain a considerable part of cooperation. The impact of the results on further research on social conflicts and their settlement, as well as the elaboration of models of fairness in the social psychology of conflicts are discussed.     

More learned irrelevance than perseveration errors in rule shifting in healthy subjects

The present experiments examined the extent to which two possible sources of error affect healthy subjects' performance in a rule-shift task. All 115 participants first received a discrimination learning task, in which a pair of different visual stimuli was presented on each trial, one of which had to be identified as 'correct.' Each stimulus varied in two dimensions: a task-relevant and a task-irrelevant dimension. Feedback on correctness was given after each choice. After eight successive correct choices, the nature of the task-relevant dimension changed: the post-shift learning phase. Two types of error can occur in this phase: continued responding to the former relevant, but now irrelevant, dimension, a perseverative error, and non-responding to the former irrelevant, but now relevant, dimension, an error due to learned irrelevance. Different groups received a post-shift task in which none, one, or both of these two types of error could affect performance. The number of incorrect choices in the post-shift phase was significantly affected by learned-irrelevance errors but not by perseverative errors. An associative-learning model incorporating feedback-induced changes in both associative strength and saliency of the elements comprising the stimuli can explain these results.     

Response bias induced in rats by response effects

Two experiments examined whether response choice in rats is affected by the presentation of response-produced stimuli. Rats were first trained to emit two different responses, with each response producing a unique auditory stimulus. Subsequently, the former response-produced stimuli were presented while the two response options were freely available. Presentation of a former response-produced stimulus caused the rats to choose more frequently the response option that had previously produced that specific stimulus over the other response option. However, although statistically significant, this response-biasing effect was numerically weak and was only apparent when the stimuli no longer had a general response-activating effect. Moreover, in the case of relatively short presentations of the stimuli, the response-biasing effect was only present if, during testing, the responses continued to produce the auditory stimuli according to the response-effect mapping used during training. These results were discussed in terms of possible underlying associations and were contrasted with previous results from analogous human studies on action control by response-produced stimuli.     

Contextual dependencies in predictive learning

Two experiments assessed contextual dependencies in a predictive-learning task. Subjects learned to associate each of four pictorial stimuli with the occurrence or non-occurrence of a specific outcome. Each of these stimuli, the intentional stimuli, was presented against one of two different visual (Experiment 1) or auditory (Experiment 2) context stimuli. These context stimuli were incidental: subjects were not explicitly instructed to pay any attention to them and each of them in isolation was not predictive of the outcome. During acquisition and testing, subjects expressed the expected relationship between intentional stimulus and outcome by an appropriate key press. At test, intentional stimuli were presented either with the same contextual stimulus as also present during acquisition (same trials), or with the other one (switched trials). The response latency was slower on switched trials than on same trials in each experiment, a result extending previous findings on the effect of environmental contextual stimuli on task performance. Results are discussed in the framework of contextual occasion setting and habituation to contextual stimuli.     

The Effects of Emotional (Non-)Expression in (Chronic) Disease: A Meta-Analytic Review

Research on emotional (non-)expression is characterized by two facets; it has mainly focused on healthy individuals and it has failed to explore the relationships between the different concepts describing expression and non-expression. A meta-analysis was conducted in order to identify the differential effects of emotional expression and non-expression in patient samples. Results showed that neither expression, nor non-expression of emotions was related to perception of disease severity. Psychological distress increased in relation to emotional non-expression, but no effect was shown for emotional expression. Emotional non-expression was also related to adopting a helpless attitude towards the disease. The conceptual and methodological disparities identified in the retrieved studies undermined the validity of the emerged relationships. Reported changes in physical and psychological outcomes were related to the kind of research design, operationalization of (non-)expression and the clinical and psychological condition of the recruited samples. Implications for improving future research are discussed.     

Editorial

Fatigue is among the most common and disabling symptoms in multiple sclerosis (MS). However, the relationship of perfectionism to fatigue in MS patients remains poorly understood. One hundred and twenty MS patients (79 women, 41 men) were compared with 120 healthy individuals (79 women, 41 men) to explore whether differences exist between the two groups with respect to perfectionistic characteristics and to investigate whether dimensions of positive and negative perfectionism are related to the symptomatology of fatigue. All participants were asked to complete the positive and negative perfectionism scale (PANPS), the modified fatigue impact scale (MFIS), the fatigue severity scale (FSS) and the Beck depression inventory (BDI). The results revealed that the MS group reported lower levels of positive perfectionism and higher levels of negative perfectionism as well as depressive symptoms than the control group. Perfectionism was also significantly related to fatigue symptoms in both groups. These findings suggest that the fatigue symptoms are strongly associated with perfectionistic characteristics. The negative (maladaptive) dimension of perfectionism may play a predisposing role in the development and/or perpetuation of fatigue in MS patients. The findings are discussed within the scope of current literature and implications for clinical applications are suggested.     

Job Conditions and Wellness/Health Outcomes in Dutch Secondary School Teachers

The aim of the present study is to compare the work situation of Dutch secondary school teachers to job conditions of European teachers and to test the Job Demand-Control-Social Support model (JDCS model, Karasek and Theorell, <citeref rid="bib24">1990</citeref>) on burnout, job satisfaction and somatic symptoms. The Dutch data (N = 304) were gathered in seven secondary schools from across the country. The remaining European group consisted of 1878 upper secondary school teachers originating from 10 countries. Additive and interactive effects in the JDCS model could be identified for emotional exhaustion only. Furthermore, a curvilinear (U-shaped) relationship was found between control and emotional exhaustion. In addition to the JDCS model, the contribution of coping in the explanation of the outcomes was tested. Attempts have been made to deal with criticisms, which are frequently leveled at the implementation of the JDCS model. Dutch teachers do not differ on job conditions from the European sample except for two working conditions where the Dutch indicate less physical exertion and environmental risks than the European reference sample. The Dutch report lower levels of coping than the reference group, they are more depersonalised and are less satisfied than teachers of the European reference group. On the other hand, the Dutch teachers had fewer somatic complaints and reported higher levels of personal accomplishment than their European colleagues.     

How Cognitive Load Influences Speakers' Choice of Referring Expressions

We report on two experiments investigating the effect of an increased cognitive load for speakers on the choice of referring expressions. Speakers produced story continuations to addressees, in which they referred to characters that were either salient or non‐salient in the discourse. In Experiment 1, referents that were salient for the speaker were non‐salient for the addressee, and vice versa. In Experiment 2, all discourse information was shared between speaker and addressee. Cognitive load was manipulated by the presence or absence of a secondary task for the speaker. The results show that speakers under load are more likely to produce pronouns, at least when referring to less salient referents. We take this finding as evidence that speakers under load have more difficulties taking discourse salience into account, resulting in the use of expressions that are more economical for themselves.