Neural basis of affective touch and pain: A novel model suggests possible targets for pain amelioration

Pain is one of the most common health problems and has a severe impact on quality of life. Yet, a suitable and efficient treatment is still not available for all patient populations suffering from pain. Interestingly, recent research shows that low threshold mechanosensory C-tactile (CT) fibres have a modulatory influence on pain. CT-fibres are activated by slow gentle stroking of the hairy skin, providing a pleasant sensation. Consequently, slow gentle stroking is known as affective touch. Currently, a clear overview of the way affective touch modulates pain, at a neural level, is missing. This review aims to present such an overview. To explain the interaction between affective touch and pain, first the neural basis of the affective touch system and the neural processing of pain will be described. To clarify these systems, a schematic illustration will be provided in every section. Hereafter, a novel model of interactions between affective touch and pain systems will be introduced. Finally, since affective touch might be suitable as a new treatment for chronic pain, possible clinical implications will be discussed.     

Materialism and Well‐being in the UK and Chile: Basic Need Satisfaction and Basic Need Frustration as Underlying Psychological Processes

A growing body of evidence shows that materialistic values are linked to lower well‐being. Self‐determination theory offers an explanation through the low fulfilment of the basic psychological needs for autonomy, competence, and relatedness. However, recent research suggests that frustration of these psychological needs may also play an additional role. Using structural equation modelling in adult samples from an established mass‐consumer society (UK: N = 958) and a fast‐developing new economy (Chile: N = 257) and employing more comprehensive measures to tap into a materialistic orientation than used in previous studies, we found that a materialistic value orientation related negatively to well‐being and positively to ill‐being and that both psychological need satisfaction and psychological need frustration played an explanatory role herein. The model was found to be highly equivalent across both samples, supporting the cross‐cultural generality of the mechanisms involved. Copyright © 2014 European Association of Personality Psychology     

Statistical modelling in the investigation of stranger rape

A sample of stranger rape offences (n = 271) registered in the Dutch Violence Crime Linkage Analysis System database in the Netherlands between 1997 and 2007 was studied with the objective of developing statistical models, which give an indication of the probability of basic offender characteristics. Observable crime characteristics concerning the modus operandi, interaction between the offender and the victim, violence, precautionary measures, and sexual behaviours were selected in the dataset. Offender characteristics were selected based on their usefulness for the police organisation in narrowing the scope of a criminal investigation. Spatial behaviour, criminal history, and living situation of the offender were selected. From the predictive models, four out of five achieved a correct rate of over 70%, and all models predicted better than the best guess method. The proposed models for distance and prior convictions for violence seem particularly promising. Both these models show an improvement of correctly predicted offender characteristics of more than 20 percentile points compared with that which could have been estimated based on the average in the total sample. The predictive value of the models needs to be tested further with ‘new offences’, which were not used to construct the model. In general, the current study supports the finding that crime characteristics can be used to get an indication of the probability of certain offender characteristics. Nevertheless, for an understanding of the relationship between the crime characteristics and offender characteristics, a further development of a theoretical framework is urgently necessary. Copyright © 2009 John Wiley & Sons, Ltd.     

Processing emotional stimuli: Comparison of saccadic and manual choice-reaction times

We compared the speed of discrimination for emotional and neutral faces in four experiments, using a forced-choice saccadic and manual reaction time task. Unmasked, brief (20 ms) bilateral presentation of schematic (Exp. 1) or naturalistic (Exp. 2) emotional/neutral face pairs, led to shorter discrimination of emotional stimuli in saccadic localisation task. When the effect of interference from emotional stimuli is ruled out by showing a pairing of the emotional or neutral face with an outline face, faster saccadic discrimination was obtained for fearful facial expression only (Exp. 3). The manual discrimination reaction time was not significantly different for emotional versus neutral stimuli. To explore the absence of a manual RT effect we manipulated the stimulus duration (20 ms vs. 500 ms: Exp. 4). Faster saccadic discrimination of emotional stimuli was observed at both durations. For manual responses, emotional bias was observed only at the longest duration (500 ms). Overall, comparison of saccadic and manual responses shows that faster discrimination of emotional/neutral stimuli can be carried out within the oculomotor system. In addition, emotional stimuli are processed preferentially to neutral face stimuli.     

Updating Allport's and Batson's Framework of Religious Orientations: A Reevaluation from the Perspective of Self‐Determination Theory and Wulff's Social Cognitive Model

We theoretically and empirically evaluate Allport's intrinsic‐extrinsic and Batson's quest religious orientations through the lens of self‐determination theory (SDT) and Wulff's social‐cognitive model. Confirming our theoretical analysis, we find that Allport's intrinsic‐extrinsic dichotomy fails to correspond empirically to the differentiation between intrinsic and extrinsic motivation within SDT. Whereas Allport's intrinsic religious orientation was positively related to internalized extrinsic motivation, his two extrinsic (i.e., personal and social) religious orientations were not systematically related to any of the discerned motives within SDT. Furthermore, Batson's quest orientation was unrelated to any of the SDT concepts but was positively related to symbolic disbelief. The present findings suggest that Allport's motivational orientations model needs both refinement and relabeling to better fit with recent theoretical evolutions in the field of motivational psychology.     

Emerging Late Adolescent Friendship Networks and Big Five Personality Traits: A Social Network Approach

ABSTRACT The current study focuses on the emergence of friendship networks among just‐acquainted individuals, investigating the effects of Big Five personality traits on friendship selection processes. Sociometric nominations and self‐ratings on personality traits were gathered from 205 late adolescents (mean age=19 years) at 5 time points during the first year of university. SIENA, a novel multilevel statistical procedure for social network analysis, was used to examine effects of Big Five traits on friendship selection. Results indicated that friendship networks between just‐acquainted individuals became increasingly more cohesive within the first 3 months and then stabilized. Whereas individuals high on Extraversion tended to select more friends than those low on this trait, individuals high on Agreeableness tended to be selected more as friends. In addition, individuals tended to select friends with similar levels of Agreeableness, Extraversion, and Openness.     

Autonomous and controlled regulation of performance-approach goals: Their relations to perfectionism and educational outcomes

The present research uses self-determination theory to examine whether autonomous and controlled regulation of performance-approach (PAp) goals would differentially predict educational outcomes and add to the variance explained by the goal strength. Two cross-sectional studies among 10th to 12th grade students supported this hypothesis but showed that when regulations of PAp goals were entered into the same regression equation with the PAp goal strength, the PAp goal strength no longer predicted outcomes. Study 2 examined perfectionism in relation to PAp goals and types of regulation, thereby showing that whereas adaptive and maladaptive perfectionism were both positively related to PAp goals, adaptive and maladaptive perfectionism were associated with autonomous and controlled regulations, respectively. Finally, path modeling indicated that autonomous and controlled regulations of PAp goals (but not PAp goals themselves) accounted for nearly all of the relation between the types of perfectionism and learning outcomes. The discussion emphasizes that it is critical to move beyond the consideration of PAp goals per se, thereby considering the types of regulation of PAp goals.     

“Shake It Baby, Shake It”: Media Preferences, Sexual Attitudes and Gender Stereotypes Among Adolescents

In this study exposure to and preferences for three important youth media (TV, music styles/music TV, internet) were examined in relation to adolescents' permissive sexual attitudes and gender stereotypes (i.e., views of men as sex-driven and tough, and of women as sex objects). Multivariate structural analysis of data from a school-based sample of 480 13 to 16-year-old Dutch students revealed that preferences, rather than exposure were associated with attitudes and stereotypes. For both girls and boys, preferences for hip-hop and hard-house music were associated positively with gender stereotypes and preference for classical music was negatively associated with gender stereotypes. Particularly for boys, using internet to find explicit sexual content emerged as a powerful indicator of all attitudes and stereotypes.