Verbal Short-Term Memory Span in Speech-Disordered Children: Implications for Articulatory Coding in Short-Term Memory

One influential explanation of the development of verbal short-term memory in children argues that short-term memory capacity is a direct function of speech rate. This theory predicts that children with pathologically slow speech will show reduced verbal short-term memory capacity and will show less evidence of speech-base coding on verbal memory tasks. To test this prediction, verbal short-term memory span was assessed using a task that did not require a verbal response in 37 speech-disordered children and 37 age- and sex-matched controls (age range 4-15 years). The speech-disordered group had a significantly lower short-term memory capacity, a smaller word length effect, and reduced speech-motor activity during rehearsal periods. Covariance analyses revealed that these differences were not a function of general intellectual or motor speed differences between the groups, and that speech rate as a covariate abolished group differences in short-term memory. These results suggest that speech rate may be a causal determinant of verbal short-term memory capacity.     

Determinants of Attraction,Retention and Completion for Aboriginal and Torres Strait Islander Higher Degree Research Students: A Systematic Review to Inform Future Research Directions

Expanding the Aboriginal and Torres Strait Islander Australian (hereafter respectfully Indigenous) talent pool to undertake valuable roles in business, health, education, academia, government, policy development and community development is critical for addressing current disparities between Indigenous and other Australians. Parity of access and engagement with education plays a key role in facilitating participation in these roles but has not yet been attained. This article provides an initial systematic review of literature on the state of the evidence regarding access/attraction, retention and completions for Indigenous Higher Degree Research (HDR) students. This article identifies the quantity (number examined), nature (e.g. focus of study), quality (peer reviewed and evidence of methodological rigour) and characteristics (e.g. publication type, authorship) of the limited publications. Using specific search strings (words or phrases of relevance to the topic), a systematic review methodology was employed to search nine databases and grey (non-peer reviewed) literature from 1995 to 2015. The resultant 12 publications were mined with quality assessed and a predetermined framework used to extract and synthesise the characteristics from individual publications. This research contributes to existing literature about Indigenous Peoples in HDR programs internationally in identifying significant cultural and institutional barriers and highlighting institutional enablers which can contribute to attraction, retention and completion. Building on the prior limited research reported in the review, the article highlights the need for further research and provides an initial agenda of directions for universities and government to redress the disparity in entry and completion of Indigenous Peoples in HDR programs.

     

Apprehending Mathematical Structure: A Case Study of Coming to Understand a Commutative Ring

Abstract algebra courses tend to take one of two pedagogical routes: from examples of mathematics structures through definitions to general theorems, or directly from definitions to general theorems. The former route seems to be based on the implicit pedagogical intention that students will use their understanding of particular examples of an algebraic structure to get a sense of those properties which form the basis of the fundamental definitions. We will explain the transition from examples to abstract algebra as a series of shifts of attention and in this paper we will use a case study to examine the initial shift, which we will call apprehending a structure, and examine how one student came to apprehend the structure of the commutative ring Z₉₉.     

Sighting horizons of teaching in higher education

This conceptual paper tackles the matter of teaching in higher education and proposes a concept of ‘horizons of teaching’. It firstly offers an overview of the considerable empirical literature around teaching—especially conceptions of teaching, approaches to teaching and teaching practices—and goes on to pose some philosophical and social theoretical considerations that open further the territory around teaching in university. Against this background, we propose the concept of ‘horizons of teaching’. Horizons of teaching provide a context in which it makes sense for teachers to give themselves to the teaching enterprise and to go on giving themselves to teaching. Horizons include diverse and intricate layers at both micro- and macro-levels that interact in a permanent and dynamic way; they involve persons and collectivities; and they concern structures and agency. The paper concludes by proposing that horizons of teaching configure and delineate curricula and the pedagogical relationship in a way that might contain a revolutionary potentiality in recasting teaching in higher education.     

The CTY Talent Search: International Applicability and Practice in Ireland

The Talent Search model of above level standardized testing is a core practice of the Center for Talented Youth (CTY) at The Johns Hopkins University in the USA, where it was introduced in 1971. The Hopkins Model was adapted for use at the Irish Centre for Talented Youth (CTYI) at Dublin City University in 1993, and this adaptation marks the first major international replication, incorporating both the mathematics and verbal portions of the SAT. The SAT proved to be a valuable assessment instrument for these students, whose scores resembled those of American students.     

Conditional inference and advanced mathematical study

Many mathematicians and curriculum bodies have argued in favour of the theory of formal discipline: that studying advanced mathematics develops one’s ability to reason logically. In this paper we explore this view by directly comparing the inferences drawn from abstract conditional statements by advanced mathematics students and well-educated arts students. The mathematics students in the study were found to endorse fewer invalid conditional inferences than the arts students, but they did not endorse significantly more valid inferences. We establish that both groups tended to endorse more inferences which led to negated conclusions than inferences which led to affirmative conclusions (a phenomenon known as the negative conclusion effect). In contrast, however, we demonstrate that, unlike the arts students, the mathematics students did not exhibit the affirmative premise effect: the tendency to endorse more inferences with affirmative premises than with negated premises. We speculate that this latter result may be due to an increased ability for successful mathematics students to be able to ‘see through’ opaque representations. Overall, our data are consistent with a version of the formal discipline view. However, there are important caveats; in particular, we demonstrate that there is no simplistic relationship between the study of advanced mathematics and conditional inference behaviour.

The Impact of Science Fiction Film on Student Understanding of Science

Researchers who have investigated the public understanding of science have argued that fictional cinema and television has proven to be particularly effective at blurring the distinction between fact and fiction. The rationale for this study lies in the notion that to teach science effectively, educators need to understand how popular culture influences their students’ perception and understanding of science. Using naturalistic research methods in a diverse middle school we found that students who watched a popular science fiction film, The Core, had a number of misunderstandings of earth science concepts when compared to students who did not watch the movie. We found that a single viewing of a science fiction film can negatively impact student ideas regarding scientific phenomena. Specifically, we found that the film leveraged the scientific authority of the main character, coupled with scientifically correct explanations of some basic earth science, to create a series of plausible, albeit unscientific, ideas that made sense to students.