Mere repeated exposure and experimental stress as determiners of stimulus evaluations

From Berlyne's theorizing concerning the determinants of hedonic value of a stimulus it was hypothesized that importance of evaluative judgments and frequency of exposure would interact in determining the favorability of affective ratings. This prediction was confirmed by the data. Increasing the importance of the rating task decreased the favorability of the ratings of low-frequency stimuli but enhanced the ratings of high-frequency stimuli.The experiments reported here were conducted at the Laboratorium voor Experimentele Sociale Psychologie at Leuven. This article is based on the author's doctoral dissertation, which was supervised by J. M. Nuttin, Jr. I would also like to thank J. M. Nuttin, Jr., E. Van Avermaet, and J. Hatcher for their helpful comments on a previous draft.     

Sex differences in brain activity related to general and emotional intelligence

The study investigated gender differences in resting EEG (in three individually determined narrow alpha frequency bands) related to the level of general and emotional intelligence. Brain activity of males decreased with the level of general intelligence, whereas an opposite pattern of brain activity was observed in females. This difference was most pronounced in the upper-alpha band which is related to semantic memory processes. It was further found that highly intelligent males displayed greater decoupling of frontal brain areas, whereas highly intelligent females showed more coupling between frontal and parietal/occipital brain areas. Similar, but less significant differences were observed for the two area scores of strategic and experiential emotional intelligence. It appears that males and females have different resting EEG correlates of IQ.     

What's in a picture? The impact of face-ism on trait attribution

Previous research indicated a ‘face-ism’ bias in media depictions of men and women: me media tend to represent men with their faces, whereas women's depictions include larger parts of their bodies, rendering their faces less prominent. To explore the impact of facial prominence on impression formation, male and female subjects received either full-body or portrait-style photographs, made from the same negatives, of male and female stimulus persons of different likeability. Male and female subjects evaluated all stimulus persons as more competent (intelligent, assertive, ambitious, etc.) if presented with a high (portrait) rather than a low (full-body photograph) degree of facial prominence. This main effect of facial prominence was not qualified by interaction effects with any of the other variables. PIUS, the media's face-ism bias is likely to contribute to a perception of men as more competent than women. In addition, female but not male subjects also evaluated stimulus persons as more expressive and likeable under conditions of high facial prominence, reflecting a global positive effect of facial prominence.     

Effects of rank ordering stimuli on magnitude ratings of these and other stimuli

Five experiments investigated the effects of rank ordering stimuli on subsequent magnitude ratings of these and other stimuli. In Experiments 1 and 2, subjects first rank ordered environmental issues in terms of their importance. Ranking stimuli from “most” to “least” led to more extreme ratings than ranking them from “least” to “most,” regardless of whether the rating criterion was the same as or diametrically opposite to the ranking criterion. (For example, subjects who had previously ranked them beginning with the most important issue subsequently rated these issues not only as more important, but also as more trivial, than did subjects who had ranked them beginning with the least important.) These effects generalized to stimuli other than those that had previously been ranked, and generalized over stimulus domains. (For example, ratings of environmental issues were also affected by ranking the importance of attributes of a marriage partner.) Other experiments in the series circumscribed the conditions in which these effects occur. Results suggested that rank ordering stimuli leads subjects to adopt comparative standards, the use of which generalizes to subsequent magnitude rating tasks and produces an anchoring bias similar to that identified by A. Tversky and D. Kahneman (1974, Science (Washington, D.C.), 185, 1124–1131). Implications of these results for the cognitive processes that underlie social judgment are discussed.     

Psychosis in German prisoners: Comparison of the clinical appearance of psychotic disorder of an imprisoned population with a not detained community group

Surveys confirm risk factors for the incarceration of patients with psychosis including homelessness and comorbidity. There is also agreement that severe psychosis can lead to violence. Data describing prisoners with psychosis in Germany are scarce. We aimed to compare patients with psychosis in a prison hospital and patients with psychosis in a community hospital. Demographic data were collected, as well as comorbidity in the form of substance dependence and a psychiatric assessment using the German version of the 18-item Brief Psychiatric Rating Scale (BPRS) and the Positive and Negative Syndrome Scale (PANSS). In the prison hospital group more patients were homeless (17 versus 2%) and non-German (36 versus 4%). There were also more patients with substance dependence or abuse in the prison hospital group. The total scores of BPRS and PANSS were lower in the prison hospital group (BPRS, 43.8 versus 51.2; PANSS, 71.5 versus 83.7). We assume that social disintegration for mentally disturbed offenders prior to incarceration hindered effective treatment. To avoid further social disintegration and possible further deterioration of mental health status of released offenders, which may lead to reoffending after imprisonment, discharge management after release from prison should be improved.     

Washing away your (good or bad) luck: physical cleansing affects risk-taking behavior

Many superstitious practices entail the belief that good or bad luck can be "washed away." Consistent with this belief, participants who recalled (Experiment 1) or experienced (Experiment 2) an episode of bad luck were more willing to take risk after having as opposed to not having washed their hands, whereas participants who recalled or experienced an episode of good luck were less willing to take risk after having as opposed to not having washed their hands. Thus, the psychological effects of physical cleansings extend beyond the domain of moral judgment and are independent of people's motivation: incidental washing not only removes undesirable traces of the past (such as bad luck) but also desirable ones (such as good luck), which people would rather preserve.     

Today's misery and yesterday's happiness: Differential effects of current life-events on perceptions of past wellbeing

Negative events – such as romantic disappointment, social rejection or academic failure – influence how we feel and what we think. Either component can influence evaluations of our past life, but in opposite ways: when sad feelings serve as a source of information, they give rise to negative evaluations; when current events serve as a standard of comparison, they give rise to positive evaluations. Because comparison requires applicability of the standard, its benefits should be limited to the domain of the event. Consistent with this rationale, three experiments showed a robust paradoxical effect: people who experienced romantic disappointment (Experiment 1), social exclusion (Experiment 2) or academic failure (Experiment 3) were more satisfied with their past romantic, social, or academic life, but less satisfied with all other domains of their past. The negative influence in unrelated domains was mediated by mood, whereas the positive influence in the event domain was not. Thus, last year's social life looks good compared to today's social rejection, but all other aspects of last year's life suffer.     

Recognition memory for social and non-social odors: differential effects of neurotoxic lesions to the hippocampus and perirhinal cortex

The contributions of the hippocampus (HC) and perirhinal cortex (PER) to recognition memory are currently topics of debate in neuroscience. Here we used a rapidly-learned (seconds) spontaneous novel odor recognition paradigm to assess the effects of pre-training N-methyl-D-aspartate lesions to the HC or PER on odor recognition memory. We tested memory for both social and non-social odor stimuli. Social odors were acquired from conspecifics, while non-social odors were household spices. Conspecific odor stimuli are ethologically-relevant and have a high degree of overlapping features compared to non-social household spices. Various retention intervals (5 min, 20 min, 1h, 24h, or 48 h) were used between study and test phases, each with a unique odor pair, to assess changes in novelty preference over time. Consistent with findings in other paradigms, modalities, and species, we found that HC lesions yielded no significant recognition memory deficits. In contrast, PER lesions caused significant deficits for social odor recognition memory at long retention intervals, demonstrating a critical role for PER in long-term memory for social odors. PER lesions had no effect on memory for non-social odors. The results are consistent with a general role for PER in long-term recognition memory for stimuli that have a high degree of overlapping features, which must be distinguished by conjunctive representations.     

Fourteen‐Month‐Olds' Imitation of Differently Aged Models

Studies comparing adult and peer imitation are rare and have to date provided mixed results. The aim of the present study was to investigate 14‐month‐olds' imitation of different actions (novel versus familiar) performed by televised models of different age groups (peers, older children or adults). In two experiments, we investigated infants' imitative performance when observing a novel action (Experiment 1) and familiar actions (Experiment 2). The results showed that the likelihood of imitating a novel action increased as the age of the model increased. The opposite was true for familiar actions where infants imitated the peer more frequently than either the older child or the adult model. These findings are discussed in relation to infants' ability to take into account a model's characteristics such as age when imitating actions. Copyright © 2011 John Wiley & Sons, Ltd.