A window on the normal development of sensitivity to global form in Glass patterns

We studied the development of sensitivity to global form in 6-year-olds, 9-year-olds, and adults (n = 24 in each group) using Glass patterns with varying ratios of paired signal dots to noise dots. The developmental pattern was similar whether the global structure within the Glass patterns was concentric or parallel. Thresholds were equally immature for both types of pattern at 6 years of age (about twice the adult value) but were adult-like at 9 years of age. Together, the results indicate that the cortical structures involved in the processing of global form achieve functional maturity between 6 and 9 years of age. During middle childhood, the mechanisms mediating sensitivity to concentric structure develop at the same rate as those mediating sensitivity to parallel structure.     

Whither causal models in the neuroscience of ADHD?

In this paper we examine the current status of the science of ADHD from a theoretical point of view. While the field has reached the point at which a number of causal models have been proposed, it remains some distance away from demonstrating the viability of such models empirically. We identify a number of existing barriers and make proposals as to the best way for these to be overcome in future studies. These include the need to work across multiple levels of analysis in multidisciplinary teams; the need to recognize the existence of, and then model, causal heterogeneity; the need to integrate environmental and social processes into models of genetic and neurobiological influence; and the need to model developmental processes in a dynamic fashion. Such a model of science, although difficult to achieve, has the potential to provide the sort of framework for programmatic model-based research required if the power and sophistication of new neuroscience technologies are to be effectively exploited.     

The Process of Occupational Decision Making: Patterns during the Transition to Adulthood

In this paper, we consider how recent social changes in the United States may be affecting vocational decision making. While adolescents often maintain high educational and occupational aspirations, the transition from school is characterized by few institutional supports, the prolongation of education, and a multitude of options with respect to the combination of school, work, and family. In such a context, what themes characterize decision making about schooling and occupational careers? We draw on qualitative interviews collected as part of the Youth Development Study (n=1000), a longitudinal study of work through adolescence and early adulthood. Multiple themes were identified including unfulfilled expectations, the postponement of decisions, turning points that crystallized decisions, and resources and obstacles including, among others, family, work, school counseling, and teachers. These themes characterize contemporary occupational decision making and thus would be appropriate focal points for future research. They also suggest that social policies may need to be modified to facilitate the young people's quest for vocational identity and work.     

Seeing Small,Seeing the Future

The Role of Science in Law by Feldman analyzes the vexed relationship between science and law. The book provides a good overview on the ongoing debate on the topic, but the author's attempt to suggest a guideline for the conflict between science and law falls short of any satisfactory conclusion.     

Herscovitch and Meyer’s Three-Component model of commitment to change: Meta-analytic findings

Commitment to change has been subject to several qualitative reviews in recent years. As a response to an associated lack of consensus in construct definition, Herscovitch and Meyer introduced a three-component model demonstrating affective commitment to change (i.e., ACC), normative commitment to change (i.e., NCC) and continuance commitment to change (i.e., CCC). Given the growing literature on organizational change, the aim of this paper is to take stock of a decade of research that uses Herscovitch and Meyer’s instrument to measure these three components. To determine the tool’s discriminant validity we conducted meta-analyses evaluating the strength of relations among ACC, NCC and CCC; the relations among the three components and behavioural support for change; and the moderating role of North American context versus non-North American context in shaping these relationships. Findings based on data collected from 17 studies indicate notable differences in the strength of relationships among ACC–NCC, ACC–CCC and NCC–CCC. Also the pattern of the correlations among the three components and behavioural support reveals interesting extensions and insights for further research into the robustness of this model, and on hitherto under-acknowledged discrepancies in behavioural support for commitment to change research.     

Culture Change in Elite Sport Performance Teams: Examining and Advancing Effectiveness in the New Era

Reflecting the importance of optimizing culture for elite teams, Fletcher and Arnold (2011) recently suggested the need for expertise in culture change. Acknowledging the dearth of literature on the specific process, however, the potential effectiveness of practitioners in this area is unknown. The present paper examines the activity's precise demands and the validity of understanding in sport psychology and organizational research to support its delivery. Recognizing that sport psychologists are being increasingly utilized by elite team management, initial evidence-based guidelines are presented. Finally, to stimulate the development of ecologically valid, practically meaningful knowledge, the paper identifies a number of future research directions.     

Procedural memory effects in categorization: Evidence for multiple systems or task complexity?

According to an influential multiple-systems model of category learning, an implicit procedural system governs the learning of information-integration category structures, whereas a rule-based system governs the learning of explicit rule-based categories. Support for this idea has come in part from demonstrations that motor interference, in the form of inconsistent mapping between response location and category labels, results in observed deficits, but only for learning information-integration category structures. In this article, we argue that this response location manipulation results in a potentially more cognitively complex task in which the feedback is difficult to interpret. In one experiment, we attempted to attenuate the cognitive complexity by providing more information in the feedback, and demonstrated that this eliminates the observed performance deficit for information-integration category structures. In a second experiment, we demonstrated similar interference of the inconsistent mapping manipulation in a rule-based category structure. We claim that task complexity, and not separate systems, might be the source of the original dissociation between performance on rule-based and information-integration tasks.     

Interpretive Phenomenological Analysis (IPA) and the Ethics of Body and Place: Critical Methodological Reflections

This article is a critical methodological reflection on the use of interpretive phenomenological analysis (IPA) initiated in the context of a qualitative research project on the experience of seclusion in a psychiatric setting. It addresses an explicit gap in the IPA literature to explore the ways that Merleau-Ponty’s phenomenology can extend the remit of IPA for noncognitivist qualitative research projects beyond the field of health psychology. In particular, the article develops Merleau-Ponty’s understanding of the lived-body, language, and embodied speech, with specific attention to the ethical implications of body and place. It concludes with a discussion on phenomenological reflexivity and prompts a reconsideration of phenomenological methods across a wide range of qualitative research projects concerned with subjectivity and ethical practice, including critical health studies, critical bioethics, and cultural studies that employ a qualitative empirical research design.     

Attentional demands associated with obstacle crossing while carrying a load

The extent to which different locomotor tasks require cognitive control is not well characterized. In this article, the authors consider the potential increase in attentional demands associated with carrying an anterior load while clearing an obstacle. Nine healthy male volunteers participated in 80 walking trials, 20 in each of 4 conditions: 1 no load condition (NL) and 3 carrying conditions (2KG, 5KG, and 10KG). Of the 20 trials in each condition, 12 included a probe reaction time (PRT) test during lead limb obstacle crossing, which was used to measure cognitive load. A load-dependent increase in PRT was observed, with PRT in the 2KG condition being significantly greater than in the NL condition, and PRT in the 5KG and 10KG conditions being significantly greater than in the 2KG condition. These results suggested that cognitive load was increased when: (a) the obstacle was occluded from vision by the load, and (b) the magnitude of load was increased.     

COMPARING PLEASURE AND PAIN: THE FUNDAMENTAL MATHEMATICAL EQUIVALENCE OF REWARD GAIN AND SHOCK REDUCTION UNDER VARIABLE INTERVAL SCHEDULES

The relationship between positive and negative reinforcement and the symmetry of Thorndike's law of effect are unresolved issues in operant psychology. Here we show that, for a given pattern of responding on variable interval (VI) schedules with the same programmed rate of food rewards (positive reinforcement VI) or electric shocks (negative reinforcement VI), there is a fundamental mathematical equivalence between reward gain and shock reduction. We also provide the first normative account of how animals should respond on a negative VI schedule, showing that it is better to space responses evenly than to respond with a variable interresponse time (IRT). Published data from rats, however, indicate that these animals respond irregularly, often with a burst of activity immediately following a shock. While this is irrational in the experimental setting, it may represent an appropriate response to the heterogeneity of stimuli commonly encountered in natural environments. We discuss the broader implications of our analysis for understanding how animals evaluate appetitive and aversive stimuli.