A diagnostic assessment for introductory molecular and cell biology

We have developed and validated a tool for assessing understanding of a selection of fundamental concepts and basic knowledge in undergraduate introductory molecular and cell biology, focusing on areas in which students often have misconceptions. This multiple-choice Introductory Molecular and Cell Biology Assessment (IMCA) instrument is designed for use as a pre- and posttest to measure student learning gains. To develop the assessment, we first worked with faculty to create a set of learning goals that targeted important concepts in the field and seemed likely to be emphasized by most instructors teaching these subjects. We interviewed students using open-ended questions to identify commonly held misconceptions, formulated multiple-choice questions that included these ideas as distracters, and reinterviewed students to establish validity of the instrument. The assessment was then evaluated by 25 biology experts and modified based on their suggestions. The complete revised assessment was administered to more than 1300 students at three institutions. Analysis of statistical parameters including item difficulty, item discrimination, and reliability provides evidence that the IMCA is a valid and reliable instrument with several potential uses in gauging student learning of key concepts in molecular and cell biology.     

Contrasting concepts of learning and contrasting research methodologies: Affinities and bias

This paper analyses the conceptual significance of different methods of researching learning. Based largely upon our own experiences, we briefly compare the use of mini‐ethnography, life history, cross‐sectional surveys and existing panel survey data. We argue that there are strong affinities between each of these methods and significantly different ways of understanding the nature of learning: mini‐ethnographies with learning as participation, life history with learning as construction and both types of survey with learning as acquisition. Three things follow. The first is that decisions about how to research learning are related to decisions about how to conceptualise and theorise learning. The second is that there is no foolproof empirical way to adjudicate between different conceptualisations of learning, though empirical evidence can and should play a significant part in informing such decisions. The third is that though mixing methods (including mixing more than one different qualitative approach) can bring advantages, the integration of the findings of mixed methods in relation to learning requires careful and sometimes difficult conceptual work.     

Effectiveness of peers in delivering programs or motivating older people to increase their participation in physical activity: Systematic review and meta-analysis

The objective of this systematic review and meta-analysis was to evaluate the effectiveness of peers to deliver programs or encourage older people to be physically active and improve physical outcomes. Peer reviewed articles published in English between January 1976 and June 2016, retrieved from six databases according to the predefined inclusion criteria were included. Where possible results were pooled and meta-analyses conducted. Eighteen articles were included in the review, a total of 3,492 intervention participants, average age 66.5 years and 67.1% were female. Overall, study quality was medium to high. Interventions mainly included resistance, flexibility and cardiovascular training, however there was one aquatic exercise group. Eight studies were delivered by peers and five utilised peer support, which included advice and being positive but was not directly linked to an exercise intervention. While 16 of the 18 studies reported improvement in levels of physical activity and/or noted physical benefits by peer involvement, the meta-analyses findings supported the control groups for the six-minute-walk-test and the timed-up-and-go test. Findings from this review suggest exercise programs involving peers can promote and maintain adherence to exercise programs. However, results were inconclusive as to whether peers have a positive effect on improving older people’s physical function.     

Optimized versus corrected peak power during friction-braked cycle ergometry in males and females

Abstract

The aim of this study was to compare optimization and correction procedures for the determination of peak power output during friction-loaded cycle ergometry. Ten male and 10 female sports students each performed five 10-s sprints from a stationary start on a Monark 864 basket-loaded ergometer. Resistive loads of 5.0, 6.5, 8.0, 9.5, and 11.0% body weight were administered in a counterbalanced order, with a recovery period of 10 min between sprints. Peak power was greater and occurred earlier, with less work having been done before the attainment of peak power, when the data were corrected to account for the inertial and frictional characteristics of the ergometer. Corrected peak power was independent of resistive load (P > 0.05), whereas uncorrected peak power varied as a quadratic function of load (P < 0.001). For males and females, optimized peak power (971 ± 122 and 668 ± 37 W) was lower (P < 0.01) than either the highest (1074 ± 111 and 754 ± 56 W respectively) or the mean (1007 ± 125 and 701 ± 45 W respectively) of the five values for corrected peak power. Optimized and mean corrected peak power were highly correlated both in males (r = 0.97, P < 0.001) and females (r = 0.96, P < 0.001). The difference between optimized and mean corrected peak power was 37 ± 30 W in males and 33 ± 14 W in females, of which approximately 15 W was due to the correction for frictional losses. We conclude that corrected peak power is independent of resistive load in males and females.     

Māori science education in Aotearoa New Zealand

Abstract    This article reports on the first two phases of a multiphase science education development project in predominantly Māori kura (school communities) in the central region of the North Island of Aotearoa New Zealand. The development project in its entirety employs an action research methodology and by so doing endeavors to support the improvement of science education delivery in accordance with school community aspirations. The full project (a) establishes the current situation in Year 1–8 science education in the communities; (b) identifies developmental aspirations for stakeholders within the communities and identifies potential contributors and constraints to these aspirations; (c) implements mechanisms for achieving identified aspirations; and finally; (d) evaluates the effectiveness of such mechanisms. In its focus on the first two phases, this article incorporates the analytical lenses of Kaupapa Māori Theory and Bronfenbrenner’s bio-ecological model. It concludes by outlining some priorities to consider for science education development based on the outcomes of our preliminary discussions.

Anticipating the experience of higher education through computer simulation

In industry the advantages of realistic job preview have been much discussed, but lit-tle is currently done in British schools to prepare students for higher education. This article describes the development stages of a principled adventure game to simulate the experience of higher education. Playing this game is intended to provide realistic role preview for prospective students.The simulation has been developed out of an earlier board game derived, to some extent, from research findings. More recent research on student learning has provided the principles on which the new simulation game is being based. The game not only allows students to try out different study strategies, it also provides advice tailored to the specific strategies used by the individual stu-dent in interacting with the computer. This simulation can be seen as a simple expert system providing a form of intelligent tutoring.The architecture of the computer simulation is described, together with the strategies used to ensure that the game, and the advice provided, are both controlled by principles derived from the research on student learning. Illustrations are used to indicate how a student would experience the interactions with the computer, and how the rules produce tailored advice.     

The development, validation, and applicability of The Personnel Evaluation Standards

Michigan State UniversityAir Force Human Resources Laboratory