Somatoforme Störungen und Bindungstheorie

Somatoform disorders are not only marked by somatic symptoms, but also by significant disturbances in interpersonal relationships. Interpersonal difficulties – including the maladaptive pattern of illness behavior and the resulting difficult doctor-patient-relationship – are an important field of therapeutic intervention (Nickel u. Egle 1999). The interpersonal problems which are characteristic in patients with somatoform disorders draw attention to the developmental aspects of these conditions. Attachment theory provides a promising framework for understanding these developmental features. In the paper presented we therefore apply concepts and observations from attachment theory to somatoform disorders. After a brief review of attachment theory we specifically discuss the developmental aspects of representation formation in somatization. As next, empirical evidence is reviewed that link attachment insecurity to the development of somatoform disorders. Finally a vulnerability model of somatoform disorders is outlined.     

Intergroup contact,friendship quality and political attitudes in integrated and segregated schools in Northern Ireland

Background This study examines the effects of integrated and segregated schooling on Northern Irish children's self‐reported contact and friendship with members of the other denominational group in school and community settings. Aim To assess the effects of cross group friendships and cross group contacts in school and outside school on children's political attitudes. Sample A cross‐sectional design was employed with 1732 children being assessed at three age levels 11,12 & 14 years in eight‐matched integrated, maintained (Catholic) and controlled (Protestant) schools. Method Lisrel modelling was used to investigate the interrelationships among cross group friendship quality, cross group contacts in school and outside school and children's political attitudes. Results Intergroup contact within and outside school was reported frequently in integrated schools but only occasionally in segregated schools. Modelling revealed that cross group contacts in school and outside school were both associated with less extreme political attitudes. Friendship quality with cross group members had no significant effects on political attitudes. Conclusions The results provide support for educating Protestants and Catholics together as a means of moderating attitudes and creating cross‐community friendships in a divided society.     

Paradoxical Results in Multidimensional Item Response Theory

In multidimensional item response theory (MIRT), it is possible for the estimate of a subject’s ability in some dimension to decrease after they have answered a question correctly. This paper investigates how and when this type of paradoxical result can occur. We demonstrate that many response models and statistical estimates can produce paradoxical results and that in the popular class of linearly compensatory models, maximum likelihood estimates are guaranteed to do so. In light of these findings, the appropriateness of multidimensional item response methods for assigning scores in high-stakes testing is called into question.     

Locating the Extrema of Fungible Regression Weights

In a multiple regression analysis with three or more predictors, every set of alternate weights belongs to an infinite class of “fungible weights” (Waller, Psychometrica, in press) that yields identical SSE (sum of squared errors) and R ² values. When the R ² using the alternate weights is a fixed value, fungible weights (a _i ) that yield the maximum or minimum cosine with an OLS weight vector (b) are called “fungible extrema.” We describe two methods for locating fungible extrema and we report R code (R Development Core Team, 2007) for one of the methods. We then describe a new approach for populating a class of fungible weights that is derived from the geometry of alternate regression weights. Finally, we illustrate how fungible weights can be profitably used to gauge parameter sensitivity in linear models by locating the fungible extrema of a regression model of executive compensation (Horton & Guerard, Commun. Stat. Simul. Comput. 14:441–448, 1985).     

Presidential speechmaking style: Emotional response to micro-expressions of facial affect

Research considering the effect of Presidential speech making style shows individuals are likely to attend to and be emotionally affected by the facial expressions of leaders, especially those that are inappropriate for the context. In this study we tested how rapid and subtle expressions of facial affect (i.e., expressions of less than one-second, often termed micro-expressions) in speeches by a political leader impacts participants’ emotional state. We do this by removing seven brief expressions (less than one-second) from a nearly twelve minute televised speech by President George H. W. Bush concerning the 1990 commitment of US military in response to Iraq’s invasion of Kuwait. FACS coding identified all these expressions as containing a component of smiling (lip corner puller: AU12), in some cases with the addition of other facial movements (sometimes associated with anger and/or disgust). Experiments carried out on 206 university undergraduates showed emotional state was altered as a result of these micro-expressions when the control (unaltered speech) and experimental group (micro-expressions removed from speech) were compared. Specifically, participants who viewed the micro-expressions felt less threatened and less angry. Thus, facial expression (even very brief micro-expressions) can have a significant impact on the receiver of a political speech.

Procedural fairness in performance appraisal: Beyond the review session

Utilizing an organizational justice perspective, this cross-organizational study developed procedural fairness dimensions for the appraisal review session and two contextual domains of the performance appraisal process. The contextual domains were: (a) the structure, policies, and support characterizing the formal appraisal system, and (b) the appraisal-related interactions that occur throughout the year between supervisors and subordinates. In addition, relationships of the three procedural variable sets and their respective individual variables with three fairness (two distributive justice and one global) criteria were assessed. Procedures from the session and system domains were found to be most useful for predicting the fairness criteria.     

The concept of a proposition in classical and quantum physics

A proposition is associated in classical mechanics with a subset of phase space, in quantum logic with a projection in Hilbert space, and in both cases with a 2-valued observable or test. A theoretical statement typically assigns a probability to such a pure test. However, since a pure test is an idealization not realizable experimentally, it is necessary — to give such a statement a practical meaning — to describe how it can be approximated by feasible tests. This gives rise to a search for a formal representation of feasible tests, which leads via mixed tests (weighted means of pure tests) to vague tests (convex sets of mixed tests). A model is described in which the latter form a continuous lattice; the pure and mixed tests are the maximal elements and the feasible tests form a basis. Each type of test has its own logic; this is illustrated by the passage from mixed tests to pure tests, which corresponds to the transition from L to classical logic.This work was supported by a grant from the National Research Council of Canada.     

Transient and enduring spatial representations under disorientation and self-rotation

Current theories of environmental cognition typically differentiate between an online, transient, and dynamic system of spatial representation and an offline and enduring system of memory representation. Here the authors present additional evidence for such 2-system theories in the context of the disorientation paradigm introduced by R. F. Wang and E. S. Spelke (2000). Several experiments replicate the finding that disorientation results in a decrease in the precision of people's estimates of relative directions. In contrast to the typical interpretation of this effect as indicating the primacy of a transient spatial system, the present results are generally more consistent with an interpretation of it as indicating a switch from a relatively precise online representation to a relatively coarse enduring one. Further experiments examine the relative precision of transient and enduring representations and show that switching between them does not require disorientation, but can also be produced by self-rotations as small as 135 degrees .