Neural correlates of acquired color category effects

Category training can induce category effects, whereby color discrimination of stimuli spanning a newly learned category boundary is enhanced relative to equivalently spaced stimuli from within the newly learned category (e.g., categorical perception). However, the underlying mechanisms of these acquired category effects are not fully understood. In the current study, Event-Related Potentials (ERPs) were recorded during a visual oddball task where standard and deviant colored stimuli from the same or different novel categories were presented. ERPs were recorded for a test group who were trained on these novel categories, and for an untrained control group. Category effects were only found for the test group on the trained region of color space, and only occurred during post-perceptual stages of processing. These findings provide new evidence for the involvement of cognitive mechanisms in acquired category effects and suggest that category effects of this kind can exist independent of early perceptual processes.     

Depressive rumination and the C957T polymorphism of the DRD2 gene

Depressed individuals who ruminate have difficulties learning from punishment and suppressing task-irrelevant information. The C957T polymorphism of the DRD2 gene, which affects functioning of D2 dopamine receptors (DRD2) that are expressed predominantly in the indirect pathway of the basal ganglia, has been found to influence suppression and punishment learning. Given these associations, we examined in the present study whether depressive rumination is related to the C957T polymorphism in 317 clinically depressed individuals and 317 never-depressed control individuals. A 2 × 2 (diagnostic group ×C957T polymorphism) analysis of variance conducted on depressive rumination scores yielded a significant interaction of group and C957T: Individuals with two 957C alleles reported higher levels of depressive rumination than did individuals with one or two 957T alleles if they were depressed, but not if they were healthy. The present findings suggest that the dopaminergic system and DRD2 are related to the frequency of maladaptive rumination in depressed individuals. Thus, DRD2 may be an important target for the pharmacological treatment of depressive rumination.     

Evolution and Process Thought

Five topics arising from evolutionary biology open new possibilities for fruitful dialogue between scientists and proponents of the process philosophy of Alfred North Whitehead. These topics (with the main authors whose views are discussed) are: (1) Contingency and Teleology, Stephen Jay Gould, Simon Conway Morris; (2) The Baldwin Effect and Interiority, Bruce Weber and David DePew, Daniel Dennett, Terrence Deacon, Susan Oyama; (3) Complexity and Design, Michael Behe, David Griffin; (4) Hierarchical Levels and Downward Causation, Theo Meyering, Charles Hartshorne; and (5) Self-organization and Emergence, Terrence Deacon, Philip Clayton. In the final section, I look at the relation of science and metaphysics and ask whether the subjectivity postulated by process philosophy is accessible to scientific investigation.     

ELIA: A software application for integrating spoken language and eye movements

We have developed a new software application, Eye-gaze Language Integration Analysis (ELIA), which allows for the rapid integration of gaze data with spoken language input (either live or prerecorded). Specifically, ELIA integrates E-Prime output and/or .csv files that include eye-gaze and real-time language information. The process of combining eye movements with real-time speech often involves multiple error-prone steps (e.g., cleaning, transposing, graphing) before a simple time course analysis plot can be viewed or before data can be imported into a statistical package. Some of the advantages of this freely available software include (1) reducing the amount of time spent preparing raw eye-tracking data for analysis; (2) allowing for the quick analysis of pilot data in order to identify issues with experimental design; (3) facilitating the separation of trial types, which allows for the examination of supplementary effects (e.g., order or gender effects); and (4) producing standard output files (i.e., .csv files) that can be read by numerous spreadsheet packages and transferred to any statistical software.     

Perceived Benefits Following Sport Injury: A Qualitative Examination of their Antecedents and Underlying Mechanisms

The purpose of the present study was to describe the development and validation of the Self-Talk Questionnaire (S-TQ), designed to measure two functions of self-talk strategies, namely the motivational function and the cognitive function, used by athletes to enhance their sport performances. The study was conducted in three phases. The first phase targeted item selection and content relevance. The second phase set out to test the factor structure of the instrument. The aim of the third phase was focused on further examination of the psychometric properties of the instrument. The results of an exploratory factor analysis provided adequate support for the instrument. The S-TQ consists of 11 items, representing two factors (motivational and cognitive). A confirmatory factor analysis showed an acceptable fit to the data. The factors were internally consistent, the correlations with external criteria were significant, and test-retest reliability values were very good. Examining the relationships between the S-TQ and similar constructs supported convergent validity. Discriminant validity was supported by correlations between the S-TQ and a different construct. The S-TQ appears to be a promising psychometric instrument that can be used in research and psychological intervention programs.     

An Investigation into the Effects of Hypnosis on Basketball Performance

Abstract

The purpose of this study was to investigate the effects of hypnosis on set- and jump-shooting performance among male collegiate basketball players. A single-subject ABA research design combined with a procedure that monitors the internal experience of the participants (Wollman, 1986) was implemented. The results indicated that all three participants increased their mean jump- and set- shooting performance from baseline to intervention, with all three participants returning to baseline levels of performance postintervention phase. Finally, each participant reported they had felt the intervention had increased sensations they associated with peak performance. These results support the hypothesis that a hypnosis intervention can improve jump- and set-shooting performance and increase feelings and cognitions that are associated with peak performance.     

Anticipating action in complex scenes

In four experiments we explored the accuracy of memory for human action using displays with continuous motion. In Experiment 1, a desktop virtual environment was used to visually simulate ego‐motion in depth, as would be experienced by a passenger in a car. Using a task very similar to that employed in typical studies of representational momentum we probed the accuracy of memory for an instantaneous point in space/time, finding a consistent bias for future locations. In Experiment 2, we used the same virtual environment to introduce a new “interruption” paradigm in which the sensitivity to displacements during a continuous event could be assessed. Thresholds for detecting displacements in ego‐position in the direction of motion were significantly higher than those opposite the direction of motion. In Experiments 3 and 4 we extended previous work that has shown anticipation effects for frozen action photographs or isolated human figures by presenting observers with short video sequences of complex crowd scenes. In both experiments, memory for the stopping position of the video was shifted forward, consistent with representational momentum. Interestingly, when the video sequences were played in reverse, the magnitude of this forward bias was larger. Taken together, the results of all four experiments suggest that even when presented with complex, continuous motion, the visual system may sometimes try to anticipate the outcome of our own and others' actions.     

Japanese manufacturing techniques

Abstract

Japanese human resource management, particularly as manifested in Japanese manufacturing companies, has undoubtedly been seen as highly successful. This paper analyses how and why it has developed into such a commanding position. It looks at the cultural contexts of new means of production and analyses factors contributing to its success using examples and case studies drawn particularly from Japanese motor manufacturing. Japanese human resource management policies and techniques as well as production techniques have been emulated by many non-Japanese manufacturers, although there is great selectivity in the adaptation of techniques. It is also difficult for researchers to attribute direct causal influence.

Nevertheless, the influence continues and this paper goes on to examine the impact upon workers and the design of work these techniques are having. Empirical evidence is examined.

The paper ends with a plea for work and organizational psychology to complement its traditional natural science paradigm and neo-positivist approach with a multiperspective, ethnographic, and qualitative methodology.     

Counselling in primary care: A study of the psychological impact and cost benefits for four chronic conditions

Primary care counselling services have expanded rapidly over the last twenty years. Their principal focus has been to manage the demands placed on general practitioners by high service users, such as frequent attenders and patients with mental health problems. To date, very little research has been conducted to ascertain the impact of counselling for other patient groups in terms either of psychological outcomes or of cost-benefits. This study looked at the effect of short-term counselling on both the uptake of health services and the psychological states of four patient groups – frequent attenders and patients with diabetes, hypertension and asthma. All patients on the chronic disease register for these conditions and all patients who had made at least eight GP appointments over the previous twelve months were invited to take part in the study. The participants received eight 90-minute small-group counselling sessions, conducted by trained counsellors. The counselling followed a cognitive behavioural therapy (CBT) approach, with an emphasis on developing personal responsibility. Psychological outcomes were assessed using three proprietary measures (SF 36, HADS and CORE) immediately following counselling and at six months post-intervention. Health service uptake was assessed for each group over the twelve months post-intervention, using number of GP consultations, home visits, hospital referrals and test/investigations requested as outcome indicators. These data were compared with those for comparable control groups for each condition. The results suggested that, overall, all patient groups showed a significant improvement in psychological well-being, and that these gains were maintained for the six-month study period. The intervention groups also significantly reduced their uptake of primary and secondary care services, by comparison with their comparable control groups. The results suggest that the psychological and fiscal benefits of counselling provision within a primary care setting can extend to other patient categories.     

Similarities and differences in visual and spatial perspective-taking processes

Processes for perspective-taking can be differentiated on whether or not they require us to mentally rotate ourselves into the position of the other person (Michelon & Zacks, 2006). Until now, only two perspective-taking tasks have been differentiated in this way, showing that judging whether something is to someone’s left or right does require mental rotation, but judging if someone can see something or not does not. These tasks differ firstly on whether the content of the perspective is visual or spatial and secondly on whether the type of the judgement is early-developing (level-1 type) or later-developing (level-2 type). Across two experiments, we tested which of these factors was likely to be most important by using four different perspective-taking tasks which crossed orthogonally the content of judgement (visual vs. spatial) and the type of judgement (level-1 type vs. level-2 type). We found that the level-2 type judgements, of how something looks to someone else and whether it is to their left or right, required egocentric mental rotation. On the other hand, level-1 type judgements, of whether something was in front of or behind someone and of whether someone could see something or not, did not involve mental rotation. We suggest from this that the initial processing strategies employed for perspective-taking are largely independent of whether judgements are visual or spatial in nature. Furthermore, early developing abilities have features that make mental rotation unnecessary.