Differential response patterns to disgust-related pictures

ABSTRACT

In the present study, attentional bias was investigated as a potential predisposing mechanism for the contamination-related subtype of obsessive-compulsive disorder (C-OC disorder). Fifty healthy participants with varying degrees of subclinical C-OC symptoms performed a visual search task to measure differential attentional biases elicited by neutral, disgust-, and fear-specific pictorial material. Participants had to find a target picture within five neutral distractor pictures randomly presented on different locations in an array. The task was to decide whether the array contained an unpleasant target picture or not. In randomly-selected emotional trials, participants were further asked about the content of the picture and the confidence of their answer. The results show that the reaction times significantly differed between the emotional and neutral pictures. Participants were significantly more confident in answering questions referring to fear compared to disgust pictures. This effect was marginally amplified in participants with higher C-OC symptoms. We discuss the results within the framework of the cost and benefit hypothesis, which postulates that disgust evolutionarily elicits stronger uncertainty compared to fear, owing to the ambiguous nature of the stimuli. Increased uncertainty might be an important but underestimated factor for pathological disgust experience, such as in obsessive-compulsive disorder.     

Freely Chosen Index Finger Tapping Frequency Is Increased in Repeated Bouts of Tapping

Healthy individuals (n = 40) performed index finger tapping at freely chosen frequency during repeated bouts and before and after near-maximal muscle action consisting of 3 intense flexions of the index finger metacarpal phalangeal joint. One experiment showed, unexpectedly, that a bout of tapping increased the tapping frequency in the subsequent bout. Thus, a cumulating increase of 8.2 ± 5.4% (p < .001) occurred across 4 bouts, which were all separated by 10 min rest periods. Follow-up experiments revealed that tapping frequency was still increased in consecutive bouts when rest periods were extended to 20 min. Besides, near-maximal muscle activation, followed by 5 min rest, did not affect the tapping frequency. In conclusion, freely chosen tapping frequency was increased in repeated bouts of tapping, which were separated by 10–20 min rest periods. The observed phenomenon is suggested to be termed repeated bout rate enhancement.     

Digit ratio (2D:4D) and sex-role orientation: Further evidence and meta-analysis

Three new studies (N = 132, 623, 1112) did not yield hypothesized associations between digit ratio (2D:4D), an assumed negative correlate of prenatal testosterone, and psychometrically measured sex-role orientation (positive association with femininity, negative ones with masculinity and masculinity-femininity difference scores) among heterosexuals of either sex. Meta-analysis of the pertinent literature (N = 6311, 28 studies from 10 countries, 46% unpublished) showed only men’s (but not women’s) left-hand (but not right-hand) 2D:4D reliably related as expected (positively) to femininity. This effect was tiny (0.14% attributable variance) and possibly non-robust (crucially dependent on one large study included). Hence, the cumulative evidence does not support systematic, robust, noteworthy within-sex correlations between 2D:4D and the masculinity/femininity personality dimensions.     

The End of ‘the end of impunity’? The International Criminal Court and the Challenge from Truth Commissions

With its express intention ‘to put an end to impunity’, the International Criminal Court (ICC) faces a substantial challenge in the shape of conditional amnesties granted in future national truth commissions (TCs)—a challenge that invokes fundamental considerations of criminal justice ethics. In this article, I give an account of the challenge, and I consider a possible solution to it presented by Declan Roche. According to this solution the ICC-prosecutor should respect national amnesties and prosecute and punish only those perpetrators who have refused to cooperate with the TC. I argue, however, that this compromise is untenable. As a general rule, if we justify the ICC on grounds of deterrence we should not accept conditional amnesties granted in national TCs.     

Relationship work among young adult couples: Romantic,social, and physiological considerations

We examined romantic, social, and physiological variables associated with partners discussing romantic challenges together and with friends, a process known as relationship work (RW). Actor‐partner interdependence models examining 71 heterosexual, young adult couples and their friends suggested social network approval, friendship quality, and partners' perspective taking were each associated with partners' RW patterns. Skin conductance activity readings revealed males universally experienced greater physiological arousal when discussing romantic problems than females. Unexpectedly, both males and females experienced greater skin conductance activity when discussing romantic challenges with friends than with partners. Males were more likely to discuss romantic challenges with friends when their female partners experienced greater baseline skin conductance activity. Findings inform researchers regarding links between romantic, social, and physiological functioning.     

Obstacles to Widening Biosample Research

Science and Engineering Ethics - Switzerland has an excellent culture of medical research and is a melting pot for medical experts with international expertise. Nevertheless, as in other countries,...     

Grouping in the shine-through effect

How the elements of a visual scene are grouped into objects is one of the most fundamental but still poorly understood questions in visual neuroscience. Most investigations of perceptual grouping focus on static stimuli, neglecting temporal aspects. Using a masking paradigm, we show that the neural mechanisms underlying grouping seem to be both fast and complex. For example, a vernier target was followed by, first, a briefly presented grating and, then, a long-lasting, extended grating. Under these conditions, the briefly presented grating is hardly visible. Still, vernier discrimination strongly changed with the number of elements of the briefly displayed grating being worst for small gratings. In accordance with a neural network model of masking, we propose that the edges of the briefly presented grating and the vernier interfere in spite of the short presentation time. We suggest that this fast edge processing is a first step for unconscious grouping processes.     

Testing unidimensionality in polytomous Rasch models

A fundamental assumption of most IRT models is that items measure the same unidimensional latent construct. For the polytomous Rasch model two ways of testing this assumption against specific multidimensional alternatives are discussed. One, a marginal approach assuming a multidimensional parametric latent variable distribution, and, two, a conditional approach with no distributional assumptions about the latent variable. The second approach generalizes the Martin-Löf test for the dichotomous Rasch model in two ways: to polytomous items and to a test against an alternative that may have more than two dimensions. A study on occupational health is used to motivate and illustrate the methods.The authors would like to thank Niels Keiding, Klaus Larsen and the anonymous reviewers for valuable comments to a previous version of this paper. This research was supported by a grant from the Danish Research Academy and by a general research grant from Quality Metric, Inc.     

Unemployment, coping and psychological distress

This study addressed the role of coping sytle in anxiety and depression of unemployed people. Two-hundred thirty-three people checking in at unemployment services participated. They filled in Carver, Scheier and Weintraub's (1989) coping measure (COPE), the Hospital Anxiety and Depression scale (HAD), gave information as to age, duration of unemployment and their appraisal of their situation. Four secondary dimensions of COPE were used in data analyses. Multiple regression analyses were undertaken with anxiety/depression as dependent and the coping variables as independent variables, with background/appraisal variables entered first. Coping variables added to the prediction of anxiety and depression over and above background/appraisal variables. For women Focus on Emotion coping as well as Avoidance was related to higher anxiety/depression scores ( p <0.01), whereas Reappraisal was related to lower anxiety/depression ( p <0.05). For men only Avoidance was related to anxiety/depression ( p <0.01). More Avoidance co-occurred with higher levels of anxiety as well as depression. The results are discussed with respect to possible intervention.