Resistance and Endurance: Harriet,The Irishman,and Movies About Indigestible History

Two current biopic movies, Harriet and The Irishman, present the life stories of real people who have been involved with slavery and organized crime. These images contradict the virtuous image of America that is fundamental to our sense of national identity and patriotism. Could this contradiction lead to oppositional movements for social change?     

Reliably Assessing Growth with Longitudinal Diagnostic Classification Models

Recent advances have enabled diagnostic classification models (DCMs) to accommodate longitudinal data. These longitudinal DCMs were developed to study how examinees change, or transition, between different attribute mastery statuses over time. This study examines using longitudinal DCMs as an approach to assessing growth and serves three purposes: (1) to define and evaluate two reliability measures to be used in the application of longitudinal DCMs; (2) through simulation, demonstrate that longitudinal DCM growth estimates have increased reliability compared to longitudinal item response theory models; and (3) through an empirical analysis, illustrate the practical and interpretive benefits of longitudinal DCMs. A discussion describes how longitudinal DCMs can be used as practical and reliable psychometric models when categorical and criterion‐referenced interpretations of growth are desired.     

Cut points of the Actigraph GT9X for moderate and vigorous intensity physical activity at four different wear locations

ABSTRACT

Accelerometer cut points are an important consideration for distinguishing the intensity of activity into categories such as moderate and vigorous. It is well-established in the literature that these cut points depend on a variety of factors, including age group, device, and wear location. The Actigraph GT9X is a newer model accelerometer that is used for physical activity research, but existing cut points for this device are limited since it is a newer device. Furthermore, there is not existing data on cut points for the GT9X at the ankle or foot locations, which offers some potential benefit for activities that do not involve arm and/or core motion. A total of N = 44 adults completed a four-stage treadmill protocol while wearing Actigraph GT9X sensors at four different locations: foot, ankle, wrist, and hip. Metabolic Equivalent of Task (MET) levels assessed by indirect calorimetry along with Receiver Operating Characteristic (ROC) curves were used to establish cut points for moderate and vigorous intensity for each wear location of the GT9X. Area under the ROC curves indicated high discrimination accuracy for each case.     

Learner self-efficacy,goal orientation,and academic achievement: exploring mediating and moderating relationships

ABSTRACT

Within the context of Pintrich’s self-regulated learning model, recent reviews of the literature show that motivational factors are the strongest predictors of academic performance. Even so, gaps remain in terms of which goal orientation constructs area most strongly related to performance, and whether academic self-efficacy is involved in such relationships, either as mediator or moderator. This study addresses these gaps using a sample of 478 university students; 409 females aged 17–62 (M?=?23.28, SD?=?7.22) and 69 males, aged 18–47 (M?=?22.5, SD?=?6.31). Analyses revealed that academic self-efficacy (ASE) mediated relationships between both mastery and performance-approach goal orientation with achievement, though the mediation effect was larger for the relationship involving mastery approach goal orientation. ASE did not moderate the relationship between performance-approach goal orientation and achievement. Findings suggest teaching programmes should foster learning environments that encourage persistence and effort when learning, and consider how course delivery and feedback can enhance academic self-efficacy, regardless of the goal orientation adopted by students.     

Teachers' self‐assessment of the effects of formative and summative electronic portfolios on professional development

This study compared the effects of four electronic portfolio curricula on pre‐service and beginning teachers' self‐ratings of their professional development (n = 207), using a 34 item electronic Portfolio Assessment Scale (ePAS). Three formative portfolios, A, C and D, had teacher development as a primary objective and used participants' narrative reflections on students over a 2–3 month period. One summative portfolio, B, assessed teacher accountability through participants' analyses of professional teaching standards concerning students during 1–2 week teaching units. Factor analyses of the ePAS assessments for each portfolio and all four combined yielded the same five factors concerning professional outcomes: overall teacher development, including reflective skill (F1), an understanding of assessment roles (F2), an understanding of backwards planning (F3), the benefit of analyzing student work (F4) and the benefit of teacher peer collaboration (F5). For F1, F3 and F5 the means of the formative portfolios A, C and D were significantly higher than those of portfolio B. No differences were found among the portfolios concerning the benefits of analyzing student work (F4). The researchers concluded that formative portfolios that focused on teacher development better supported professional outcomes than did the summative accountability portfolio. It was concluded that portfolios should not be used for the summative accountability of teachers.

Dans cette étude nous avons comparé les effets de quatre programmes scolaires à portefeuille électronique sur les autocritiques que des enseignants débutants ont faites de leur développement professionnel (n = 207). Nous nous sommes servis d'une échelle d'évaluation à portefeuille électronique de 34 points (ePAS). L'objectif principal des trois portefeuilles formatifs A, B et D était le développement de l'enseignant. Pour y parvenir nous avons employé des réflexions narratives sur les élèves pendant une période de deux à trois mois. A travers un portefeuille sommaire, B, nous avons évalué la responsabilité des enseignants au moyen des analyses que les participants ont faites des normes de l'enseignement professionnel des unités d'apprentissage d'une à deux semaines. Nous avons conclu que les portefeuilles formatifs qui se concentraient sur le développement des enseignants ont mieux soutenu le rendement professionnel des jeunes enseignants.

Este estudio compara los efectos de cuatro portafolios electrónicos curriculares sobre las auto evaluaciones de profesores antes de que comiencen a ejercitar la enseñanza y de profesores que inician su desarrollo profesional (n = 207), utilizando 34 ítemes de la escala de Portfolio Assessment (Valorización de Portafolios) (ePAS). Tres portafolios formativos, A, C y D, tienen como objetivo principal el desarrollo de la enseñanza usando las reflexiones por escrito de los participantes sobre estudiantes en un período de dos a tres meses. En un portafolio de síntesis, B, se valora la responsabilidad de los profesores. Durante una unidad educacional de una a dos semanas, los participantes evalúan métodos de enseñanza y, a través de este análisis, valoran la responsabilidad de los profesores. Se concluye que los portafolios formativos que se enfocan en el desarrollo de la enseñanza facilitan de mejor manera el resultado del desarrollo de los profesionales jóvenes.

Diese Arbeit vergleicht die Wirkungen von vier Lehrplänen im Bereich elektronischer Portfeuilles auf die beruflichen Selbstbewertungen von werdenden und neueingetretenen Lehrkräften. Verwendet wird ein elektronisches Portfeuillewertungssystem (ePAWS) von 34 Punkten. Die Entwicklung der Lehrer ist die primäre Absicht von drei formativen Portfeuilles, A, C und D, in denen die Teilnehmer ihre Selbstbeobachtungen über zwei bis drei Wochen aufgeschrieben haben. Die Verantwortlichkeit von Lehren wird in einem zusammenfassenden Portfeuille B eingesschätzt, durch eine Beurteilung von lehrberuflichen Maßstaben der Teilnehmer in Bezug auf Studenten im Verlauf einer ein‐ bis zweiwöchigen Lehreinheit. Bewiesen wurde, daß die formativen Portefeuilles, die sich auf Lehrentwicklung konzentrierten, die Weiterentfaltung von neueingestiegenen Lehrkräften besser fördern.     

An Introduction to the Blockchain and Its Implications for Libraries and Medicine

The blockchain is a relatively new technology used to verify and store transaction records for online cryptocurrencies like Bitcoin. The system is redundant and distributed, making it difficult for transactions to be rescinded, duplicated, or faked. Beyond online currencies, the blockchain has potential uses in health care, education, and many other fields. This column will briefly describe what the blockchain is and how it is being used, potential future uses that may be of interest to librarians and medical practitioners, and some of the problems with the system.     

The effects of informational complexity and working memory on problem-solving efficiency

This study investigated the influence of informational complexity and working memory capacity on problem-solving efficiency. We examined two predictions of thesituational efficiency hypothesis, which states that the efficiency of problem solving varies as a function of situational constraints. One prediction is that informational complexity affects problem-solving efficiency. A second prediction is that working memory capacity affects problem-solving efficiency. Students completed a working memory task and solved abstract and concrete syllogisms. Participants solved abstract syllogisms more accurately than concrete syllogisms and spent more time solving abstract syllogisms. Thus participants demonstrated greater problem-solving efficiency when solving concrete syllogisms. Results indicate that there is a trade-off between problem-solving accuracy and problem-solving time when information differs with respect to informational complexity, a phenomenon we refer to as theefficiency paradox. Working memory capacity did not affect accuracy or efficiency. The results support the conclusion that problem-solving efficiency is situational and a function of the complexity of information. Educational implications and directions for future research are suggested.     

Captain America, Tuskegee, Belmont, and Righteous Guinea Pigs: Considering Scientific Ethics through Official and Subaltern Perspectives

With an eye towards a potential scientific ethics curriculum, this paper examines four contrasting discourses regarding the ethics of using human subjects in science. The first two represent official statements regarding ethics. These include the U.S.’s National Science Education Standards, that identify ethics with a professional code, and the Belmont Report, that conceptualizes ethics in three principles to guide research oversight boards. Contrasting this view of ethics as decorum and practice in line with a priori principles is the conception of ethics from unofficial sources representing populations who have been human subjects. The first counter-discourse examined comes from Guinea Pig Zero, an underground magazine for professional human subjects. Here ethics emerges as a question of politics over principle. The good behavior of the doctors and researchers is an effect of the politics and agency of the communities that supply science with subjects. The second counter-discourse is a comic book called Truth, which tells the story of Black soldiers who were used as guinea pigs in World War II. Ethics is both more political and more uncertain in this narrative. Science is portrayed as complicit with the racism of NAZI Germany; at the same time, and in contrast to the professional guinea pigs, neither agency nor politics are presented as effective tools for forcing the ethical conduct of the scientific establishment. The conclusion examines the value of presenting all of these views of scientific ethics in science education.     

Effect of acquisition rates on off‐task behavior of kindergarten students while learning sight words

Assessing a student's acquisition rates (ARs) is a reliable way to determine how many new words should be taught in one lesson without reducing retention. Exceeding a student's AR can result in frustration and problem behaviors. The purpose of this study was to examine the effect of AR on the off‐task behavior of kindergarten students while participating in a commonly used sight‐word instruction video. Participants included 39 kindergarten students whose ARs were assessed before showing the sight‐word video. Behavior was measured as on‐ and off‐task using momentary time‐sampling with 10‐s intervals. Results indicated that students' time off task increased after exceeding their ARs, with a noticeable immediate increase. The implications and limitations of these results are discussed.