Motor excitability during movement preparation in Tourette syndrome

Tourette syndrome (TS) is a neurodevelopmental disorder characterized by the occurrence of motor and vocal tics. TS has been linked to the impaired operation of cortical‐striatal‐thalamic‐cortical circuits that give rise to hyper‐excitability of cortical motor areas, which may be exacerbated by dysfunctional intra‐cortical inhibitory mechanisms. That said, many individuals gain control over their tics during adolescence and it has been suggested that this increased control arises as a result of the development of mechanisms that operate to suppress corticospinal excitability (CSE) ahead of volitional movements. Here we used single‐pulse transcranial magnetic stimulation (TMS) in conjunction with a manual Go/NoGo task to investigate alterations in CSE ahead of volitional movements in a group of adolescents with TS (N = 10). Our study demonstrated that CSE, as measured by TMS‐induced motor‐evoked potentials (MEPs), was significantly reduced in the TS group in the period immediately preceding a finger movement. More specifically, we show that individuals with TS, unlike their age‐matched controls, do not exhibit the predicted increase in mean MEP amplitude and decrease in MEP variability that immediately precede the execution of volitional movements in typically developing young adults. Finally, we report that the magnitude of the rise in MEP amplitude across the movement preparation period in TS is significantly negatively correlated with clinical measures of motor tic severity, suggesting that individuals with severe motor tics are least able to modulate motor cortical excitability.     

Implicit social cognition: from measures to mechanisms

Most human cognition occurs outside conscious awareness or conscious control. Some of these implicit processes influence social perception, judgment and action. The past 15 years of research in implicit social cognition can be characterized as the Age of Measurement because of a proliferation of measurement methods and research evidence demonstrating their practical value for predicting human behavior. Implicit measures assess constructs that are distinct, but related, to self-report assessments, and predict variation in behavior that is not accounted for by those explicit measures. The present state of knowledge provides a foundation for the next age of implicit social cognition: clarification of the mechanisms underlying implicit measurement and how the measured constructs influence behavior.     

“Everybody's Teaching and Everybody's Learning”: Photovoice and Youth Counseling

Social justice initiatives within counseling practice have led to calls for interventions that promote critical consciousness and connect youth to their communities. Photovoice projects, which fall under the heading of youth participatory action research, represent promising vehicles for this work. The authors suggest that photovoice activities have a place within the framework of developmental youth counseling programming and present an overview of a photovoice project conducted in collaboration with a community‐based organization.     

Getting one's thoughts straight: a dialogical analysis of women's accounts of poorly controlled type 2 diabetes

Type 2 diabetes is a metabolic disorder characterised by chronically elevated blood glucose and a high risk of cardiovascular and other complications. Self-management is central to diabetes care and includes taking regular exercise, low-fat/sugar diet and blood glucose monitoring. However, little is understood about how people with diabetes make sense of self-management. Our aim, therefore, is to explore the process of 'getting one's thoughts straight' in relation to illness self-management for women with poorly controlled type 2 diabetes. Eight women were recruited from two hospitals in the North of England. Each was interviewed using a biographic-narrative method. Narratives were analysed using a dialogical approach. We use Bakhtin's concepts of voice, official and unofficial truth, and internally persuasive discourse to explore how participants considered, struggled with, and, sometimes, acted upon self-management. We demonstrate how the truth by which participants lived shifted as they encountered new perspectives and experiences. The accounts revealed tension between official, authoritative voices, typically concerned with optimal illness control and unofficial voices that speak at a lived, embodied level. In conclusion, we suggest moving beyond the notion of self-management towards a conceptualisation of life with chronic illness that includes personal goals, values and embodied experience in context.     

Roles of domain knowledge and working memory capacity in components of skill in Texas Hold’Em poker

Domain knowledge is a powerful predictor of success in many complex tasks, but do general cognitive abilities also play a role? To investigate this question, we had 155 participants representing a wide range of poker experience and skill complete tests of poker knowledge, working memory capacity (WMC), and two components of skill in Texas Hold’Em poker: the ability to remember hands and the ability to evaluate hands. Not surprisingly, poker knowledge positively predicted performance in all of the Hold’Em tasks. However, WMC added significantly to the prediction, and there was no evidence for interactions between poker knowledge and WMC. That is, WMC was as important as a predictor of performance at high levels of poker knowledge as at low levels, suggesting that domain knowledge may not always enable circumvention of WMC in domain-relevant tasks.     

Methods Used to Document Procedural Fidelity in School-Based Intervention Research

There has been a paucity of guidance on the methodological details needed for measuring and sampling the independent variable or actual intervention occurrences in research and practice. Furthermore, the planning and support necessary to document the independent variable in both circumstances may be considerable. The current study extends prior research by reviewing the methods used to document procedural fidelity in school-based intervention research with student participants published between 2005 and 2012 in journals known for publishing school-related intervention studies. Two hundred sixty-six articles met the inclusion criteria and the majority (70 %) used fidelity data in the analysis of intervention effectiveness. By systematically examining contributions of school-based intervention researchers across targeted variables as well as qualities of interventions and settings, suggestions can be made for (a) planning measurement of fidelity across phases of the intervention, (b) sampling fidelity occurrences, (c) preventing intervention failure by providing needed supports, and (d) responding to patterns of fidelity required for intervention and outcome measurement in both research and practice.