Psychological and Somatic Factors in Patients Undergoing Coronary Artery Bypass Graft Surgery: Towards Building a Psychological Framework

The present study explored the relationships between psychological and somatic factors in patients undergoing Coronary Artery Bypass Graft surgery (CABG). The data-analysis of previous work was extended by adding somatic factors, including feelings of disability, somatic complaints and fatigue. The focus was on their relationships with psychological factors, including anxiety, depression and neuroticism. Prior to surgery and six months postoperatively, 217 patients completed self-report questionnaires. Using the method of structural equation modeling (SEM), the structure of relationships between the somatic, psychological and background factors (i.e., gender, age and medical factors) was explored. A model was developed providing a good fit and accounting for a substantial amount of variance. The structure of relationships revealed that somatic factors lead to anxiety and depression in the preoperative period, whereas anxiety and depression lead to somatic factors in the postoperative period. The structure further strengthened the key position of neuroticism and its overall negative prognostic implications.     

How psychological momentum changes in athletes during a sport competition

ObjectivesThe present research sought to examine changes in psychological momentum (PM) during sport competitions through the lens of a dynamical systems approach.DesignMale regional-level cyclists competed in cycling duels on home trainers.MethodImages of moving avatars of the cyclists were projected on a wall, and were manipulated so that one cyclist was exposed to an ascending performance scenario (i.e., positive momentum) and the other to a descending performance scenario (i.e., negative momentum). Every 3 min, the cyclists answered PM items by using a keyboard that was placed on the handlebars of their bicycles. Additionally, exerted power was continuously recorded.ResultsResults revealed an asymmetrical critical boundary pattern for PM perceptions indicating that negative PM was triggered more easily than positive PM. Exerted power was generally higher during the negative momentum scenario than during the positive momentum scenario. In addition, exerted power slowly decreased over both momentum scenarios, and this decrease was faster at the very beginning of the negative momentum scenario.ConclusionResults indicate that PM perceptions possess the dynamical properties of nonlinearity and history-dependence. Moreover, the finding that exerted power was higher in the negative momentum scenario was interpreted as a resistance behavior that occurs while experiencing negative momentum. The anticipated decreases in both exerted power and PM perceptions in the negative momentum scenario converge to support the notion that negative PM is a stronger attractor than positive PM. The present study confirms that PM is a dynamical phenomenon and offers fruitful avenues for future research.     

Stability of inter-joint coordination during circle drawing: effects of shoulder-joint articular properties

The present study addressed the effect of articular conformity of the shoulder joint on the stability of inter-joint coordination during circular drawing movements. Twelve right-handed participants performed clockwise and counter-clockwise circular drawing movements at nine locations in the mid-sagittal plane. The task was paced acoustically at 1.0, 1.5 and 2.0 Hz and performed without visual control. Displacements of seven infrared light emitting diodes that were fixated at relevant joints were sampled at 100 Hz by means of a 3D-motion tracking system (Optotrak 3020). From these data, shoulder, elbow and wrist angular excursions were derived as well as the continuous relative phase of the proximal and distal joint pairs of the arm. The results confirmed earlier observations that the shoulder and elbow are more strongly coupled than the elbow and wrist in sagittal-plane movements. However, a typical characteristic of the architecture of the shoulder joint, that is, its built-in mechanical "joint play", was shown to induce a position-dependent variation in inter-joint coordination stability. We conclude that besides polyarticular-muscle induced synergies and inertial coupling, articular conformity of the shoulder joint constitutes an additional determinant of inter-joint coordination stability that, to date, has been neglected.     

The importance of status congruency in interaction processes

The literature on status congruency is summarized in two statements: 1) Individuals strive after status congruency, and 2) status congruency involves favorable state for individuals, groups and the society. The two reported experiments throw serious doubts on the generality of these statements. Experiment I is a variation of Burnstein and Zajonc's (1965) experiment. It is hypothesized and shown that the striving after congruency is weakened under condition of a competitive reward structure, the Ss giving incongruent self-rankings. Moreover it is found that nominations for a different task are not congruent at all. Experiment II was designed to replicate and extend Exline and Ziller's (1959) experiment, in which it was shown that status congruency in small groups causes interpersonal conflict. On none of the several measures was clear support obtained. In the discussion it is argued that there is hardly any experimental evidence for the two statements formulated above. It is pointed out that the correlational relationships between status congruency and other variables may be attributed to some internal cognitive link in the person, serving as an intermediate variable, the forces of it perhaps being self-interest (as supported by Experiment I), a need for clarity and a need for justice.     

The circumplex: A slightly stronger than ordinal approach

For some proximity matrices, multidimensional scaling yields a roughly circular configuration of the stimuli. Being not symmetric, a row-conditional matrix is not fit for such an analysis. However, suppose its proximities are all different within rows. Calling {{x,y},{x,z}} a conjoint pair of unordered pairs of stimuli, let {x,y}→{x,z} mean that row x shows a stronger proximity for {x,y} than for {x,z}. We have a cyclic permutation π of the set of stimuli characterize a subset of the conjoint pairs. If the arcs {x,y}→{x,z} between the pairs thus characterized are in a specific sense monotone with π, the matrix determines π uniquely, and is, in that sense, a circumplex with π as underlying cycle. In the strongest of the 3 circumplexes thus obtained, → has circular paths. We give examples of analyses of, in particular, conditional proximities by these concepts, and implications for the analysis of presumably circumplical proximities. Circumplexes whose underlying permutation is multi-cyclic are touched.     

On the emergence of deprivation-reducing behaviors: Subliminal priming of behavior representations turns deprivation into motivation

Building on recent research into the emergence of human motivation and goal pursuit in the absence of the conscious awareness of the source of this pursuit, the present article aimed to shed light on how states of deprivation (e.g., deprivation of fluid) actually produce the motivation and corresponding behavior that lifts the deprivation. Two studies established that when participants were relatively deprived of fluids, they experienced enhanced motivation to drink and consumed more fluid in an alleged tasting test, and these effects were more pronounced when the concept of drinking was rendered accessible by subliminal priming. These results suggest that specific motivational goal states and corresponding behaviors do not arise directly from deprivation per se, but that accessible goal-related cognitions play a role in this process. Implications for theory and research on deprivation and non-conscious goal pursuit are briefly discussed.     

Nonconscious goal pursuit and the surmounting of physical and social obstacles

The ability to overcome obstacles is widely regarded as a sign of motivation. Building on recent research on nonconscious goal pursuit, two experiments are presented that test whether activating the goal of helping outside people's awareness by exposure to social stereotypes causes them to overcome physical and social obstacles. Experiment 1 established that although overall participants were less inclined to pick up a tissue that was accidentally dropped on the floor by the experimenter when this tissue was dirty instead of clean, they were able to overcome their aversion toward picking up the physical object when they were primed with the mental representation of a social group (e.g., nurse) containing the goal of helping. Results were replicated in Experiment 2, in which participants had to overcome a social obstacle by providing feedback to a student of a negatively evaluated ethnic minority group, and explanations in terms of demand characteristics and mood were excluded. Implications for the literature on nonconscious goal pursuit are briefly discussed. Copyright © 2007 John Wiley & Sons, Ltd.     

The Lost Voice: How Libertarianism and Consumerism Obliterate the Need for a Relational Ethics in the National Health Care Service

This article analyzes the contribution Christian ethics mightbe able to make to the ethical debate on policy and caregivingin health and social care in the United Kingdom. The articledeals particularly with the concepts of solidarity and subsidiaritywhich are essential in Christian social ethics and health careethics, and which may be relevant for the ethical debate onhealth and social caregiving in the United Kingdom. An importantargument in the article is that utilitarian and market-drivenpolicies in the National Health Service (NHS) and the socialcare system have marginalized the position of the elderly andhave seriously impoverished the quality of care for the elderly.The neglect of the elderly and other vulnerable groups is alsothe result of widespread consumerist attitudes among patientsand of libertarian models of noninterference which are affirmedby a public ethos of self-sufficiency and counter-dependency.Those who need care dare not make their need known to othersand ask for help, while simultaneously those who could helpare so intimidated by the public affirmation of privacy andnegative rights that they do not dare to offer help except ifthis is explicitly demanded. This distant and standoffish attitudeis in an important way responsible for the fact that the voiceof those in need is altogether lost to the public forum. Christianethics puts much emphasis on responsibility and solidarity withthe needy other but is not able to have much impact on the deliveryof care in a secularized society and health care system likethe NHS. Nonetheless, Christianity still has a powerful andrespected voice, by speaking up for those who cannot speak forthemselves, such as the elderly and the handicapped. Christianscan find allies in the ethics of care and other relational approachesin health care ethics in order to combat libertarianism, consumerism,and utilitarianism.     

Learning in cod (Gadus morhua): long trace interval retention

Basic knowledge about learning capacities and awareness in fish is lacking. In this study we investigated which temporal gaps Atlantic cod could tolerate between two associated events, using an appetitive trace-conditioning paradigm with blinking light as conditioned stimulus (CS) and dry fish food as unconditioned stimulus (US). CS–US presentations were either temporally overlapping (delay conditioning, CS duration 24 s, interstimulus interval 12 s) or separated by 20, 60, or 120 s (trace conditioning, CS duration 12 s) or 2 h (control, CS duration 12 s). The percentage of fish in the feeding area increased strongly during CS presentation in all delay, 20 s, and 60 s trace groups and in one out of two 120 s trace groups, but not in the control groups. In the 20 and 60 s trace procedures, the fish crowded together in the small feeding area during the trace interval, showing strong anticipatory behaviour. In all the conditioned groups, the fish responded to the CS within eight trials, demonstrating rapid learning. At 88 and 70 days after the end of the conditioning experiments, the delay and 20 s trace groups, respectively, were presented the CS six times at 2-h intervals without reward. All groups responded to the light signal, demonstrating memory retention after at least 3 months. This study demonstrates that Atlantic cod has an impressively good ability to associate two time-separated events and long time retention of learnt associations.     

How to quantify support for and against the null hypothesis: A flexible WinBUGS implementation of a default Bayesian t test

We propose a sampling-based Bayesian t test that allows researchers to quantify the statistical evidence in favor of the null hypothesis. This Savage—Dickey (SD) t test is inspired by the Jeffreys—Zellner—Siow (JZS) t test recently proposed by Rouder, Speckman, Sun, Morey, and Iverson (2009). The SD test retains the key concepts of the JZS test but is applicable to a wider range of statistical problems. The SD test allows researchers to test order restrictions and applies to two-sample situations in which the different groups do not share the same variance.