Fostering learning from instructional video in a second language

This study investigated the most effective way to present an instructional video that contains words in the students' second language. Korean‐speaking university students received a 16‐min video lesson on Antarctica that included English narration (video + narration group), English text subtitles (video + text group), or English narration with simultaneous text subtitles (video + narration + text group). On a comprehension test, the video + text group scored higher than each of the other two groups, in contrast to the modality effect; and the video + narration + text group outscored the video + narration group, in contrast to the redundancy effect. Each of the lessons that included text was rated as less difficult than the lesson with narration only. The narration + text group reported lower effort than each of the other groups. Results highlight boundary conditions for two principles of multimedia instructional design that apply for college students who are learning in a second language. Theoretical implications are discussed.     

Keeping It Going: Evidence of Long-Term Improvements After Implementation of the 1-2-3 Magic Parenting Program

This study builds upon a pilot evaluation of the 1-2-3 Magic Program (Bailey, van der Zwan, Phelan, &; Brooks, 2012 Bailey, E. L., van der Zwan, R., Phelan, T. W., &; Brooks, A. (2012). The 1–2-3 Magic Program: Implementation outcomes of an Australian pilot evaluation with school-aged children. Child &; Family Behavior Therapy, 34(1), 53–69. doi:10.1080/07317107.2012.654455[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]), by investigating its long-term efficacy as a brief parenting intervention for families with a school-aged child. Twelve Australian families participated in a randomized controlled trial, assigned either to a wait-listed control group or to one that received immediate training. Consistent with the pilot evaluation, only families who had received training reported significant improvement in child and parenting behavior at an 8-week follow-up assessment. These improvements were maintained for 12-month posttraining, supporting the long-term efficacy of the 1-2-3 Magic Program for Australian families.     

Specificity of Task Constraints and Effects of Visual Demonstrations and Verbal Instructions in Directing Learners' Search During Skill Acquisition

In the present study, the efficacy of visual demonstrations and verbal instructions as instructional constraints on the acquisition of movement coordination was investigated. Fifteen participants performed an aiming task on 100 acquisition and 20 retention trials, under 1 of 3 conditions: a modeling group (MG), a verbally directed group (VDG), and a control group (CG). The MG observed a model intermittently throughout acquisition, whereas the VDG was verbally instructed to use the model's movement pattern. Participants in the CG received neither form of instruction. Kinematic analysis revealed that compared with verbal instructions or no instructions, visual demonstrations significantly improved participants' approximation of the model's coordination pattern. No differences were found in movement outcomes. Coordination data supported the visual perception perspective on observational learning, whereas outcome data suggested that the modeling effect is mainly a function of task constraints, that is, the novelty of a movement pattern.     

Fostering Students’ Appraisals of the Relevance of History by Comparing Analogous Cases of an Enduring Human Issue: A Quasi-Experimental Study

To identify the challenges that students must meet to engage in effective self-directed inquiry, a class was followed for three years, from the fourth through the sixth grades, as they engaged in a sequence of progressively more demanding inquiry activities. Students made substantial progress in understanding the objectives of inquiry, identifying questions, attending to evidence, identifying patterns, making controlled comparisons, interpreting increasingly complex data, supporting claims, and drawing justified conclusions. Retaining awareness of inquiry objectives and integrating influences of multiple variables in predicting outcomes were two areas that remained challenging. A comparison group of seventh graders who had not been involved in the program displayed strikingly different approaches to an inquiry task, indicating that the skills identified here are not ones that develop in the absence of appropriate kinds of educational experiences.     

Interactions of persistent slip bands with a grain boundary on the common primary slip plane in a copper bicrystal

In this letter, the dislocation patterns on the common primary slip plane in a fatigued \[1-34]-\[182-7] copper bicrystal with a Sigma=19b grain boundary (GB) have been investigated using the electron channelling contrast technique in a scanning electron microscope. The results show that the two-phase dislocation structure, such as veins and persistent slip band (PSB) walls, embedded within veins, can be clearly seen on the common primary slip plane. In particular, the interactions of PSBs with the GB are clearly revealed. It is found that there are three kinds of interaction mode between the GB and the dislocations during cyclic deformation, and those are discussed. It is suggested that the dislocations carried by PSBs cannot transfer through the GB continuously even though the bicrystal has a common primary slip plane and its surface slip bands are continuous across the GB.     

The Effectiveness of Cognitive Behavioral Therapy for Generalized Anxiety Disorder in a Frontline Service Setting

The goal of the current study was to test the generalizability of cognitive behavioral therapy (CBT) for generalized anxiety disorder (GAD) in a frontline service setting. Twenty‐nine patients who presented to treatment clinics with problematic worry were provided CBT for GAD. Among the intent‐to‐treat sample, there were no significant changes in worry or depression from pre‐ to posttreatment. Treatment completers showed significant pre‐ to posttreatment reductions on measures of worry and depression. The magnitude of change was smaller than has been reported in randomized control trials (RCTs). Although the frontline service setting differed from RCT settings in multiple ways, treatment completers nonetheless achieved moderate to large decreases in self‐reported worry and depression.     

From prematurity to parenting stress: The mediating role of perinatal post-traumatic stress disorder

Preterm delivery may lead to the emergence of symptoms of Post-Traumatic Stress disorder (PTSD), which may, in turn, affect the quality of the mother-child relationship. The aim of this study is to shed light on the development of parenting stress in mothers of preterm and full-term children. It is hypothesized that PTSD symptoms mediate the relationship between preterm/full-term birth and the levels of parenting stress. Perinatal PTSD, parenting stress and social support were assessed in 156 mothers of full-term children and 87 mothers of preterm children. Mothers of preterm children experienced more post-traumatic stress and parenting stress than mothers of full-term children. However, the relationship between preterm delivery and subsequent levels of parenting stress was mediated by PTSD symptoms. These findings suggest that the maternal perception of childbirth as a traumatic experience and the subsequent development of PTSD symptoms are pivotal in the emergence of parenting stress.     

超出预期策略的实验研究

在先前论文中提出与心理匹配策略相应的,又一用以调节学生学习新材料的学习心向的超出预期策略基础上,本文将该策略运用于数学教学之中,进行现场的教学实验研究。研究结果表明：在数学教学中可以运用超出预期策略对教材内容进行情感性处理,且对调节学生学习心向,提高认知学习的质量是有效的。