The development of perceptual averaging: learning what to do,not just how to do it

The mature visual system condenses complex scenes into simple summary statistics (e.g., average size, location, orientation, etc.). However, children, often perform poorly on perceptual averaging tasks. Children's difficulties are typically thought to represent the suboptimal implementation of an adult‐like strategy. This paper examines another possibility: that children actually make decisions in a qualitatively different way to adults (optimal implementation of a non‐ideal strategy). Ninety children (6–7, 8–9, 10–11 years) and 30 adults were asked to locate the middle of randomly generated dot‐clouds. Nine plausible decision strategies were formulated, and each was fitted to observers' trial‐by‐trial response data (Reverse Correlation). When the number of visual elements was low (N < 6), children used a qualitatively different decision strategy from adults: appearing to “join up the dots” and locate the gravitational center of the enclosing shape. Given denser displays, both children and adults used an ideal strategy of arithmetically averaging individual points. Accounting for this difference in decision strategy explained 29% of children's lower precision. These findings suggest that children are not simply suboptimal at performing adult‐like computations, but may at times use sensible, but qualitatively different strategies to make perceptual judgments. Learning which strategy is best in which circumstance might be an important driving factor of perceptual development.     

A Strengths-Based Consultancy Approach in Elite Sport: Exploring Super-Strengths

There is a lack of literature documenting strengths-based approaches in sport psychology. This study explored how a super-strengths approach has been implemented by sport psychologists (n = 7) and coaches (n = 8), with UK elite athletes. Findings were categorized into 3 general dimensions: defining super-strengths, identification methods, and phases of development. Super-strengths were defined as a strategy for performance, utilizing a potential world's-best resource to gain a competitive edge. Identification methods were subjective (e.g., asking/observing athletes) and objective (e.g., performance analysis). Participants emphasized 3 development phases: preparation, adaptation and monitoring. Findings offer considerations for implementing a strengths-based approach and future research.     

From Punk Kids to Public Enemy Number One

Using an in-depth case study, we examine the origins and development of the Southern California–based racist skinhead gang known as Public Enemy Number One (PENI). Unlike many racist skinheads who view themselves as part of a political movement, members of PENI view themselves as part of a racist street gang with relatively little interest in traditional forms of political activism. Instead and contrary to the focus of most scholarly research on racist groups, PENI is involved in profit-oriented criminal activity such as the distribution of methamphetamine, identity theft, and counterfeiting. We examine how members of PENI attempt to balance a white supremacist and street gang identity.     

Counselling at a distance: Challenges and new initiatives

Traditional views of the possibilities of counselling at a distance, mediated by telecommunications technology, are challenged. The current status of telephone counselling is reviewed- it is proposed that the telephone is a vibrant innovative medium for therapeutic work. Computer involvement in therapeutic work is defined, and the issues confronting computer-mediated therapy are contrasted with developments in computer-supported co-operative work. It is concluded that active collaboration between therapists, social scientists and computer scientists is required to develop therapy-specific computer applications to mediate in therapy-at-a-distance.     

Digital LED Pixels: Instructions for use and a characterization of their properties

This article details how to control light emitting diodes (LEDs) using an ordinary desktop computer. By combining digitally addressable LEDs with an off-the-shelf microcontroller (Arduino), multiple LEDs can be controlled independently and with a high degree of temporal, chromatic, and luminance precision. The proposed solution is safe (can be powered by a 5-V battery), tested (has been used in published research), inexpensive (～ $60 + $2 per LED), highly interoperable (can be controlled by any type of computer/operating system via a USB or Bluetooth connection), requires no prior knowledge of electrical engineering (components simply require plugging together), and uses widely available components for which established help forums already exist. Matlab code is provided, including a ‘minimal working example’ of use suitable for use by beginners. Properties of the recommended LEDs are also characterized, including their response time, luminance profile, and color gamut. Based on these, it is shown that the LEDs are highly stable in terms of both luminance and chromaticity, and do not suffer from issues of warm-up, chromatic shift, and slow response times associated with traditional CRT and LCD monitor technology.     

Synthetic Neuroethology

Computation and philosophy intersect three times in this essay. Computation is considered as an object, as a method, and as a model used in a certain line of philosophical inquiry concerning the relation of mind to matter. As object, the question considered is whether computation and related notions of mental representation constitute the best ways to conceive of how physical systems give rise to mental properties. As method and model, the computational techniques of artificial life and embodied evolutionary connectionism are used to conduct prosthetically enhanced thought experiments concerning the evolvability of mental representations. Central to this essay is a discussion of the computer simulation and evolution of three-dimensional synthetic animals with neural network controllers. The minimally cognitive behavior of finding food by exhibiting positive chemotaxis is simulated with swimming and walking creatures. These simulations form the basis of a discussion of the evolutionary and neurocomputational bases of the incremental emergence of more complex forms of cognition. Other related work has been used to attack computational and representational theories of cognition. In contrast, I argue that the proper understanding of the evolutionary emergence of minimally cognitive behaviors is computational and representational through and through.     

Perceptions of Engaging With a Super-Strengths Approach in Elite Sport

Strengths-based approaches (underpinned by positive psychology) are scarcely documented in sport. This study explored perceptions of a strengths-based approach (termed super-strengths) on psychological characteristics and performance in elite sport. Semistructured interviews were conducted with athletes (N = 12) who had previous experience of working with a sport psychology practitioner on super-strengths. Thematic analysis of the data indicated that super-strengths had a positive influence on athletes’ mind-set, confidence (e.g., self-belief), clarity of purpose (e.g., goal direction), drive, coping ability, and performance. Findings highlight the potential benefits of adopting strengths-based approaches in sport, and recommendations for future research are provided.