Preliminary evidence that the limbal ring influences facial attractiveness

The limbal ring of the eye appears as a dark annulus where the iris meets the sclera. Both width and opacity of the limbal ring are influenced by iris pigmentation and optical properties of the region. With age the limbal ring becomes less prominent, making it a probabilistic indicator of youth and health. This raises the question: Are judgments of facial attractiveness sensitive to this signal in a potentially adaptive way? Here we show that the answer is yes. For male and female observers, both male and female faces with a dark and distinct limbal ring are rated as more attractive than otherwise identical faces with no limbal ring. This result is observed not just for upright faces but also for inverted faces, suggesting that the limbal ring is processed primarily as a local feature rather than as a configural feature in the analysis of facial beauty. We also discuss directions for future research that can clarify the role of the limbal ring in the visual perception of facial attractiveness.     

MFT Students’ Recount Experiences of Attending Phone and Online Overeaters Anonymous Meetings

The purpose of this study was to explore Marriage and Family Therapy students’ experiences attending Overeaters Anonymous (OA). Utilizing a qualitative survey administered in an addictions course at an institution located in a rural area of the United States, 18 marriage and family therapy (MFT) graduate students reflected on their participation in both online and telephone meetings. In this study, MFT students provided their perspectives regarding the feasible utilization of Overeaters Anonymous in clinical treatment, with an emphasis on the consideration of social support for clients who may reside in rural areas. Three major themes emerged which included (1) enlightenment through exposure; (2) OA as a viable adjunct to therapy; and (3) convenience and comfort. The study addressed recommendations for MFT education, clinical implications, and future research.     

A simple introduction to Markov Chain Monte–Carlo sampling

Markov Chain Monte–Carlo (MCMC) is an increasingly popular method for obtaining information about distributions, especially for estimating posterior distributions in Bayesian inference. This article provides a very basic introduction to MCMC sampling. It describes what MCMC is, and what it can be used for, with simple illustrative examples. Highlighted are some of the benefits and limitations of MCMC sampling, as well as different approaches to circumventing the limitations most likely to trouble cognitive scientists.     

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.     

Book review

Becker, J.B., Breedlove, S.M., & Crews, D. (Eds.) (1991). Behavioral endocrinology. Cambridge, MA & London: MIT Press. Pp. xxvi + 574. ISBN 0-262-02342-3. £31.50 (Pbk).