The influence of instruction modality on brain activation in teenagers with nonverbal learning disabilities: two case histories

Teenagers with nonverbal learning disabilities (NLD) have difficulty with fine-motor coordination, which may relate to the novelty of the task or the lack of "self-talk" to mediate action. In this study, we required two teenagers with NLD and two control group teenagers to touch the thumb of each hand firmly and accurately to the fingertips of the same hand, in an order specified by verbal or tactile instruction. Brain activity patterns (measured using functional magnetic resonance imaging) suggest that unlike control participants, the NLD participants used internalized speech to facilitate the novel task only when instructions were verbal. NLD participants also showed activity in a more widely distributed network of neural structures. These findings provide preliminary evidence for remediation strategies that encourage internal speech.     

Updated generic search filters for finding studies of adverse drug effects in Ovid medline and Embase may retrieve up to 90% of relevant studies

Background

The most current objectively derived search filters for adverse drug effects are 15 years old and other strategies have not been developed and tested empirically.

Objective

To develop and validate search filters to retrieve evidence on adverse drug effects from Ovid medline and Ovid Embase.

Methods

We identified systematic reviews of adverse drug effects in Epistemonikos. From these reviews, we collated their included studies which we then randomly divided into three tests and one validation set of records. We constructed a search strategy to maximise relative recall using word frequency analysis with test set one. This search strategy was then refined using test sets two and three and validated on the final set of records.

Results

Of 107 systematic reviews which met our inclusion criteria, 1948 unique included studies were available from medline and 1980 from Embase. Generic adverse drug effects searches in medline and Embase achieved 90% and 89% relative recall, respectively. When specific adverse effects terms were added recall was improved.

Conclusion

We have derived and validated search filters that retrieve around 90% of records with adverse drug effects data in medline and Embase. The addition of specific adverse effects terms is required to achieve higher recall.     

Screening systems and decision making at the preschool level: Application of a comprehensive validity framework

Universal screening is designed to be an efficient method for identifying preschool students with mental health problems, but prior to use, screening systems must be evaluated to determine their appropriateness within a specific setting. In this article, an evidence‐based validity framework is applied to four screening systems for identifying preschool students with mental health problems. The framework is influenced by the most recent standards for educational and psychological testing, research on test accessibility, and considerations for evaluating screening systems. Suggestions are provided for evaluating the accessibility (Step 1), reliability (Step 2), construct validity (Step 3), and consequential validity (Step 4) of an instrument. Other factors for consideration (i.e., developmental stage, incremental validity, and generalizability) are also identified. Special attention is given to conditional probability indices, which are highly relevant to evaluation of screening systems, given the dichotomous nature of decision making in preschool mental health. The authors suggest that this framework be used, along with specification of the construct of interest and characteristics of the environment, to identify the appropriate method to be used for each preschool screening decision. © 2011 Wiley Periodicals, Inc.     

Developing an instrument to assess student readiness for online learning: a validation study

Given the continued growth in online learning as well as reports of high attrition rates in it, understanding student readiness for online learning is necessary. Over the years several surveys have been developed to assess student readiness as a predictor of success in online programs; however, a review of the literature yielded limited results of their translation and criterion‐referenced validity. The researchers of this article sought to develop a more rigorous survey instrument for students to self‐assess readiness for online learning. The authors report on findings from a three‐phase study during which the instrument was developed, evaluated, and validated. Through the process of validation, the researchers systematically engaged in an iterative process to refine the instrument, which resulted in not only a more rigorous instrument but one that more clearly defines ready and situates it within the literature on learner characteristics, digital divide, and information and communications technology (ICT) engagement.     

Assessing the effects of a work-based antipoverty program for parents on youth's future orientation and employment experiences

The impacts of New Hope, a 3-year work-based antipoverty program to increase parent employment and reduce poverty, on youth ages 9-19 (N = 866) were assessed 5 years after parents left the program. New Hope had positive effects on the future orientation and employment experiences of boys, especially African American boys. Compared to boys in control group families, boys in program group families were less cynical about work, less pessimistic about their employment prospects, and more involved in employment and career preparation. They also worked for longer periods during the school year than did control group boys. Comparable effects were not found for girls. The developmental significance of the findings, possible processes that led to the impacts, and the policy implications of the findings are discussed.     

The role of transnational networking for higher education academics

Amidst rapid socio-economic change, higher education (HE) academics across the world face major challenges to its organisation, finance and management. This paper discusses the role of transnational networking in higher education. Data from 40 interviews with geographically distributed academics engaged in learning and teaching transnational networks (TNNs) were analysed. The findings show that in an increasingly globalised higher education system, transnational networking goes beyond conference attendance to entail multiple combinations of offline and online activities. We do not think that current concepts of communities of practice or networks of practice accurately describe these phenomena. Instead, we suggest that these activities entail different and varying levels of tangibility, more accurately defined by us as TNNs. Moreover, we argue that the term ‘network’ in this context facilitates the individualistic pursuit of a career increasingly essential in a pressurised higher education environment.     

Stickers to Facts,Imposers, Democracy Advocators,and Committed Impartialists: Preservice Science Teachers’ Beliefs About Teacher’s Roles in Socioscientific Discourses

For science teachers using the discourse of socioscientific issues (SSI), it is important to make a decision as to whether when and how to disclose their own positions. The existing limited literature shows that science teachers prefer one of four roles during SSI discourse: sticker to facts, imposer, democracy advocator, and committed impartialist. The purpose of the present research is to understand the nature of preservice science teachers’ (PST) beliefs underlying such selection. Based on existing literature, we developed a teacher’s belief questionnaire including vignettes representing four teacher’s roles in discussion of genetically modified (GM) foods. Three hundred twenty-four (324) PSTs from a Turkish context experiencing SSI-based reforms completed these questionnaires, selected one of the teacher’s roles, and justified their selection by writing reasons. Content analysis procedures were used in data analysis of this qualitative study. The results show that most PSTs selected dialogical roles (democracy advocators and committed impartialists). Looking at their beliefs, epistemologies and teaching goals work together in PSTs’ selection of their preferred role. In addition, we argue that there is no desired alignment between teachers’ existing beliefs and expectations of SSI reforms. We conclude by indicating certain implications that may enhance such alignment.     

Crossing the ‘bridges’ and navigating the ‘learning gaps’: Chinese students learning across two systems in a transnational higher education programme

ABSTRACT

Chinese universities are actively pursuing cross-border collaborations in the form of transnational higher education programmes. Our study captures the experiences of Chinese students to illuminate how they navigate their learning journeys in a China-Australia articulation programme. To communicate the complexity of learning in modern transnational higher education programmes, we employed activity theory as the theoretical framework to explore cross-cultural contradictions shaping students’ experiences of learning. Assessment, programme rules, teaching strategies, and class and campus settings created contradictions that students had to negotiate as in-between learning spaces. We argue that cross-system contradictions play important roles in transnational higher education programmes. Therefore, instead of seeking to eliminate these contradictions or smooth cross-educational differences, these contradictions should be leveraged as learning opportunities to enrich transnational higher education programmes.