Educational diagrams

According to C.S. Peirce, diagrammatic constructions may be represented by words in a sentence, an algebraic formula, or a graphic display. They are the basis of all valid reasoning and provide a significant means for discovering unexpected truths. Using Peirce's work as a point of departure, the sources and uses of diagrams in education are discussed. With some educators, like Froebel, these diagrams are presented in a highly conspicuous manner. With others, they may be much less noticeable. But they are always there in any reasoned discourse, in one form or another. To the extent that these diagrams are followed, educational theory and practice may be considered to be controlled by diagrammatic constructions.     

“Teachers’ Hegemony Sucks”: examining Beavis and Butt-head for signs of life

The analysis of cultural artefacts, such as cartoons and films, provides the potential to gain insights into both the professional identities of teachers and the behaviour and self-concepts of students. This paper suggests that the ostensibly banal animated cartoon characters Beavis and Butt-head offer some utility in this respect. The paper explores aspects of the stereotypes and behaviour represented in the Beavis and Butt-head series and briefly discusses some possible interpretations of these images.     

The Evaluation of Student Fitness Levels in Exercise Science and Physical Education Teacher Education Programs

The debate on whether kinesiology students should undergo fitness testing is controversial. Some are strong proponents of fitness testing, while others are in strong opposition. As advocates for fitness testing among kinesiology majors, we aimed to assess the fitness levels of Exercise Science and Physical Education Teacher Education majors and evaluate current physical education teacher education (PETE) fitness criterion. One hundred and sixteen participants (males N = 49; females N = 67) underwent health-related fitness assessments. 37% of males and 51% of females met PETE’s fitness criteria. Both groups performed significantly better in body fat percentage and upper body strength than PETE’s acceptable (average) standards; however, most were significantly lower than target (above average) standards. Presented are fitness passing criteria for PETE majors and fitness reporting that aids in improved fitness tracking and accountability. We also highlight the need for NASPE and SHAPE America to clearly define fitness expectations for PETE majors and encourage other kinesiology faculty to consider implementing fitness testing in their programs.     

Small, medium and large hypertext

This paper critically reviews the different types of abstractions and implementations in the hypertext area and proposes that three types of hypertext exist, namely, small-, medium- and large-volume hypertext. For a single person dealing with a single text the prominent issue is the model of the text that the user browses; this is small-volume hypertext. When a few people are involved in creating a few texts, records are maintained as to who created what and when; this is medium-volume hypertext. In large-volume hypertext the document collection is massive and special institutions are responsible for filtering and indexing material against which arbitrarily many other people issue searches. All these aspects of hypertext have in common an abstraction of text as a graph rather than a line and an ultimate goal of facilitating communication among people.     

Power in Bayesian Mediation Analysis for Small Sample Research

Bayesian methods have the potential for increasing power in mediation analysis (Koopman, Howe, Hollenbeck, & Sin, 2015; Yuan & MacKinnon, 2009). This article compares the power of Bayesian credibility intervals for the mediated effect to the power of normal theory, distribution of the product, percentile, and bias-corrected bootstrap confidence intervals at N ≤ 200. Bayesian methods with diffuse priors have power comparable to the distribution of the product and bootstrap methods, and Bayesian methods with informative priors had the most power. Varying degrees of precision of prior distributions were also examined. Increased precision led to greater power only when N ≥ 100 and the effects were small, N < 60 and the effects were large, and N < 200 and the effects were medium. An empirical example from psychology illustrated a Bayesian analysis of the single mediator model from prior selection to interpreting results.     

Influence of deviant behaviours in workgroups in relation with group composition

The potential for behaviourally challenged students to negatively impact typically developing students is a concern shared by many parents and teachers. However, deviant peer influence during workgroup activities has not been thoroughly investigated through systematic observation of deviant interactions. This study compares sequences of deviant behaviours and peer responses recorded during cooperative activities. Seventy fifth-grade elementary school students were observed in three specific contexts, homogeneous EBD workgroups, homogeneous regular workgroups and inclusive workgroups. Findings reveal a greater prevalence of verbal aggressions and more explosive exchanges in EBD workgroups. In groups consisting solely of typically developing students, intentionally ignoring disruptive teammates proved to be effective in stopping deviant behaviours. Finally, it was in inclusive workgroups that observed deviant interactions sequences were the longest. These findings are discussed in relation with the role of group composition and workgroup training in fostering effective cooperative learning environments.     

Protective Role of Bilirubin Against Increase in hsCRP in Different Stages of Hypothyroidism

In conjunction with thyroxine, bilirubin may play an important role for regulation of hsCRP level and a consequent pro-inflammatory condition in hypothyroidism. In present study we evaluated the dependence of hsCRP changes on total bilirubin (BT) and fT4 level in thirty overt (OH) and thirty subclinical hypothyroidism (SH). Serum BT, hsCRP, thyroxine and TSH were measured in both groups and compared with forty control subjects. Serum values of TSH, hsCRP showed raised (P < 0.001 for both) values with lower levels for fT4 and BT (P < 0.001 and 0.03 respectively) in hypothyroid patients compared to the controls. ANOVA showed significant increments in TSH and hsCRP values with decreases in fT4 among the control, SH and OH groups respectively (P < 0.001). BT values showed decrease in OH group only in comparison to controls (P = 0.04). Regression analysis revealed that hsCRP was negatively dependent on fT4 (β = −0.35, P = 0.002) and serum bilirubin (β = −0.40 and P < 0.001 respectively). Univariate general linear model analysis showed this dependence persisted even when carried out distinctly in SH and OH groups separately (P < 0.001). TSH did not show any significant predictive value on the hsCRP level in either of these two tests. From these analyses we suggest that serum hsCRP is closely integrated to a lowered synthesis of bilirubin and fT4 in hypothyroid patients. Furthermore, this causal relationship is not only limited to overt but also extends to the SH.