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.     

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.     

An Investigation of Middle School Classroom Libraries

Given that much of the research on classroom libraries focus on elementary school classrooms, this study sought to examine classroom libraries at the middle school level. Access to books is especially important for middle school students given the persistent decline in reading engagement at this level. The research questions guiding this investigation focused on the nature of the libraries, the physical features of the libraries, the contributions made by the libraries to the literacy environment of the classrooms, the contents of the libraries, and teacher perceptions of their own classroom libraries. Findings indicate that teachers value classroom libraries for promoting literacy engagement and understand how these libraries provide students with immediate and easy access to books. The contents of the libraries that were examined varied in terms of genre, multicultural literature, and social justice issues.     

the adult career concerns inventory: Development of a short form

The purpose of this study was to develop and test a short form of the Adult Career Concerns Inventory (ACCI; D. E. Super, A. S. Thompson, & R. H. Lindeman, 1988), a measure of career stage that is based on D. E. Super's (1990) theory of career development. Participants were 260 college students who completed surveys. Examination of Cronbach's alpha indicated adequate reliability for the ACCI—Short Form. The multitrait‐multimethod matrix was used to compare the short form method with the long form method across the 4 career stages. Results indicated adequate convergent validity.     

A Teacher’s Life: An Interview with Raymond B. Williams

Raymond B. Williams, Professor Emeritus of Religion at Wabash College, founding Director of the Wabash Center for Teaching and Learning in Theology and Religion, long–time member of the Executive Board of the American Academy of Religion, and founding editor of the journal Teaching Theology and Religion, has moved on to what will no doubt be a very active retirement. An interview with Williams was conducted by Malcolm Warford to be published in a venue unknown to the subject, thus enabling Warford to capture the spontaneous, unguarded vocational narrative of this private, humble scholar–teacher. After Warford transcribed and edited the interview, Lucinda Huffaker, co–editor of Teaching Theology and Religion, inserted commentary to set out themes and emphases on teaching and learning (desig. – LAH). As an autobiography, the article is both a window and a mirror – revealing both the formative influences in one professor’s life and providing readers with an opportunity for reflective comparison with their own vocational paths and identities.     

The biology and evolution of music: a comparative perspective

Studies of the biology of music (as of language) are highly interdisciplinary and demand the integration of diverse strands of evidence. In this paper, I present a comparative perspective on the biology and evolution of music, stressing the value of comparisons both with human language, and with those animal communication systems traditionally termed "song". A comparison of the "design features" of music with those of language reveals substantial overlap, along with some important differences. Most of these differences appear to stem from semantic, rather than structural, factors, suggesting a shared formal core of music and language. I next review various animal communication systems that appear related to human music, either by analogy (bird and whale "song") or potential homology (great ape bimanual drumming). A crucial comparative distinction is between learned, complex signals (like language, music and birdsong) and unlearned signals (like laughter, ape calls, or bird calls). While human vocalizations clearly build upon an acoustic and emotional foundation shared with other primates and mammals, vocal learning has evolved independently in our species since our divergence with chimpanzees. The convergent evolution of vocal learning in other species offers a powerful window into psychological and neural constraints influencing the evolution of complex signaling systems (including both song and speech), while ape drumming presents a fascinating potential homology with human instrumental music. I next discuss the archeological data relevant to music evolution, concluding on the basis of prehistoric bone flutes that instrumental music is at least 40,000 years old, and perhaps much older. I end with a brief review of adaptive functions proposed for music, concluding that no one selective force (e.g., sexual selection) is adequate to explaining all aspects of human music. I suggest that questions about the past function of music are unlikely to be answered definitively and are thus a poor choice as a research focus for biomusicology. In contrast, a comparative approach to music promises rich dividends for our future understanding of the biology and evolution of music.     

Effects of documentary and fictional television formats on children's acquisition of schemata for unfamiliar occupations

Children's acquisition of real-world role schemata from factual and fictional television was tested experimentally in two studies. In study 1, 144 second- and fifth-graders saw a drama and a documentary about a caterer or a film director. In study 2, 125 fifth-graders saw the caterer tapes under conditions of high or low attentional involvement. Role schemata about real caterers or directors were measured by free response, frequency ratings, and multiple choice questions. Children acquired schemata about real occupations from bath documentary and fictional programs. On some measures, their schemata were influenced more by documentary than by fiction, but that difference faded slightly after a month. Level of involvement did not reduce the difference between real and fictional videos. Children learn social role schemata from both fictional and factual television, but they acquire more schema information from real than from fictional TV, at least when fiction is signaled by obvious cues (e.g., comedy) or when it is not percieved as socially realistic.