YouTube-based course orientation videos delivered prior to matriculation fail to alleviate medical student anxiety about anatomy

Gross anatomy is a source of anxiety for matriculating medical students due to the large volume of information presented in a truncated timeline, and because it may be their first exposure to human cadavers. This study aimed to assess if video-based resources would affect matriculating medical students' anatomy state anxiety levels. Videos were designed to be short, YouTube-based units that served to provide orientation information about the anatomy course, dissection facilities, and available study resources to dispel anxiety around beginning their anatomy studies. To evaluate the impact of the videos, students in two consecutive matriculating years (2018 and 2019) completed the validated State-Trait Anxiety Inventory and a demographic questionnaire. The 2019 cohort (n = 118) served as the experimental group with access to the videos; while the 2018 cohort (n = 120) without video access served as a historical control. Analyses revealed that the groups were equivalent in terms of trait anxiety (P = 0.854) and anatomy state anxiety even when student video exposure was controlled (P = 0.495). Anatomy state anxiety was only significantly lower in students with prior formal anatomy exposure (P = 0.006). Further inquiry into students' prior anatomy experience identified that individuals with post-secondary dissection experience were significantly less anxious than those without formal anatomical experience (P = 0.023). These results may serve as a cautionary tale to educators; while preference for video-based instructional materials is prevalent in the literature, videos delivered on public social media platforms fail to prepare students for the psychological impact of studying human anatomy.     

Quasi-static mechanical behaviour of soils used for natural turf sports surfaces and stud force prediction

The quasi-static testing of soils used in natural turf pitches yields key parameters in soil modelling, including elastic moduli, Poisson’s ratio and Mohr–Coulomb parameters for shearing resistance and cohesion in soil. The bulk strength of a Sand soil used in the construction of elite sports surfaces was found to increase initially and then decrease with increasing water content due to apparent cohesion effects. For a Clay Loam soil, more common in recreational facilities, shear strength decreased with water content. Reducing density resulted in a reduction of shear strength and elastic moduli in both soils due to reduced packing of particles reducing particle–particle contact surface area. The effect of roots on the shear strength of a Sand soil was not significant but reduced elastic moduli significantly. Horizontal forces measured during running and turning in a biomechanics laboratory were in good agreement with forces predicted using a simple quasi-static soil model for coarse-grained (Sand) soils although this was not the case with the Clay Loam soil.     

Understanding Robust Corrections in Structural Equation Modeling

Robust corrections to standard errors and test statistics have wide applications in structural equation modeling (SEM). The original SEM development, due to Satorra and Bentler (1988 Satorra, A. and Bentler, P. M. 1988. “Scaling corrections for chi-square statistics in covariance structure analysis”. In ASA 1988 Proceedings of the Business and Economic Statistics Section, 308–313. Alexandria, VA: American Statistical Association.  [Google Scholar], 1994 Satorra, A. and Bentler, P. M. 1994. “Corrections to test statistics and standard errors in covariance structure analysis”. In Latent variables analysis: Applications for developmental research, Edited by: von Eye, A. and Clogg, C. C. 399–419. Thousand Oaks, CA: Sage.  [Google Scholar]), was to account for the effect of nonnormality. Muthén (1993) Muthén, B. O. 1993. “Goodness of fit with categorical and other nonnormal variables”. In Testing structural equation models, Edited by: Bollen, K. A. and Long, J. S. 205–234. Newbury Park, CA: Sage.  [Google Scholar] proposed corrections to accompany certain categorical data estimators, such as cat-LS or cat-DWLS. Other applications of robust corrections exist. Despite the diversity of applications, all robust corrections are constructed using the same underlying rationale: They correct for inefficiency of the chosen estimator. The goal of this article is to make the formulas behind all types of robust corrections more intuitive. This is accomplished by building an analogy with similar equations in linear regression and then by reformulating the SEM model as a nonlinear regression model.     

Child Sleep and Socioeconomic Context in the Development of Cognitive Abilities in Early Childhood

Despite a robust literature examining the association between sleep problems and cognitive abilities in childhood, little is known about this association in toddlerhood, a period of rapid cognitive development. The present study examined the association between various sleep problems, using actigraphy, and performance on a standardized test of cognitive abilities, longitudinally across three ages (30, 36, and 42 months) in a large sample of toddlers (N = 493). Results revealed a between-subject effect in which the children who had more delayed sleep schedules on average also showed poorer cognitive abilities on average but did not support a within-subjects effect. Results also showed that delayed sleep explains part of the association between family socioeconomic context and child cognitive abilities.     

Time limits in testing: An analysis of eye movements and visual attention in spatial problem solving

Individuals with an aptitude for interpreting spatial information (high mental rotation ability: HMRA) typically master anatomy with more ease, and more quickly, than those with low mental rotation ability (LMRA). This article explores how visual attention differs with time limits on spatial reasoning tests. Participants were assorted to two groups based on their mental rotation ability scores and their eye movements were collected during these tests. Analysis of salience during testing revealed similarities between MRA groups in untimed conditions but significant differences between the groups in the timed one. Question‐by‐question analyses demonstrate that HMRA individuals were more consistent across the two timing conditions (κ = 0.25), than the LMRA (κ = 0.013). It is clear that the groups respond to time limits differently and their apprehension of images during spatial problem solving differs significantly. Without time restrictions, salience analysis suggests LMRA individuals attended to similar aspects of the images as HMRA and their test scores rose concomitantly. Under timed conditions however, LMRA diverge from HMRA attention patterns, adopting inflexible approaches to visual search and attaining lower test scores. With this in mind, anatomical educators may wish to revisit some evaluations and teaching approaches in their own practice. Although examinations need to evaluate understanding of anatomical relationships, the addition of time limits may induce an unforeseen interaction of spatial reasoning and anatomical knowledge. Anat Sci Educ 10: 528–537. © 2017 American Association of Anatomists.     

Spelling development: Fine-tuning strategy-use and capitalising on the connections between words

English spelling, as well as in many other languages, consists of three elements: morphology, etymology and phonology. Spelling instruction, however, focuses primarily on phonology and there is a dearth of intervention studies that examine the effect of explicitly teaching all three elements to children. We report two studies, which examined 5- to 11-year olds' spelling strategies and the effect of a spelling intervention. The intervention groups, in both studies, significantly outperformed control groups on all spelling measures. The benefits of teaching children about morphology and etymology are discussed.     

‘Powerful knowledge’ curriculum theories and the case of physics

A stream of debate (including a previous special issue of this journal (25(1) 2014)) has made claims not just for ‘bringing knowledge back in’ as the framing underpinning of the school curriculum, but that subjects associated with disciplinary and disciplined knowledge forms have a particular power and that these characteristics are important to preserve in curriculum frameworks. This paper draws on a major Australian research project studying school and university physics in the context of these arguments to revisit the issue of the ‘discipline’ of physics and the curriculum logics for physics. Given that disciplines are social in origin and changing and expanding over time, can school curriculum be logically derived from the discipline to which they relate? Are questions about student engagement only questions about pedagogy and not curriculum? Does a focus on disciplinary knowledge mean that the role of school in forming identities and values is avoidable as a significant feature of what the curriculum does? The findings from the project are used both to illustrate and test these questions, and to challenge some over-simple assumptions about the verticality of this form of knowledge for education purposes.     

Revaluing the enlightenment: reason and imagination

In higher education teaching, enhancing learner autonomy has become a key concern for curriculum planners and classroom teachers. The significant body of research about learner autonomy in language learning over the last 20 years (e.g. Holec 1981, 1988; Riley 1985; Dickinson 1987, 1992; Wenden & Rubin 1987; Little, 1991; Dam, 1995; Benson & Voller, 1997) has indicated an on-going search for more understanding of how learner autonomy can be implemented in different contexts. This paper is based on a research study which was conducted in the Hong Kong Polytechnic University in Hong Kong. The study explores learners' attitudes and expectations of language learning, teacher and learner roles, their learning preferences and perceptions of learner autonomy. The paper reports the results and discusses their implication on the development of a learner-centred approach in higher education.     

Une tentative de collaboration enseignants-parents dans une ecole primaire en France

Sans résumé