Comparison of two video prompting interventions to teach daily living skills to adolescents with autism

The present study used an adapted alternating treatment design to evaluate and compare the effects of video prompting (VP) and video prompting plus frequency building (VP + FB) to teach daily living skills to three adolescents with autism spectrum disorder. Results demonstrated all three students made substantial improvements over their baseline performance using VP and VP + FB. Furthermore, a strong intervention effect emerged for VP and VP + FB conditions when compared to the control task. However, in terms of one intervention proving superior to the other (e.g., VP to VP + FB), the data offer a mixed interpretation with VP + FB affecting changes better for two of the three students. The FB component in the VP + FB produced strong, consistent gains for all students in terms of retention.     

句子先提述的参与者在可提取性上的优势现象

下述五个实验就汉语句子成分（包括句子的参与者及其动作）的提述次序对其可提取性的影响进行了研究,结果表明：（１）句子先提述的参与者比后提述的参与者容易被提取,提述的次序对参与者的可提取性有明显影响。（２）先提述参与者的这种优势与句子呈现的方式有一定的关系。（３）在系列呈现的条件下,先提述参与者的易提取性与探测词呈现的延迟间隔有关。（４）在系列呈现的条件下,参与者以名词形式出现时,被试的反应速度较快,而参与者以名字的形式出现时,反应则较慢;在同时呈现的条件下这种差异基本消失。（５）句子参与者的行动（即句子的动词）的提述次序对其可提取性也有明显的影响,说明提述次序对句子成分的可提取性的影响,不只限于句子参与者本身。     

Bilateral Transcranial Direct Stimulation Over the Primary Motor Cortex Alters Motor Modularity of Multiple Muscles

Abstract

Transcranial direct current stimulation (tDCS) over the primary motor cortex (M1) has been demonstrated to modulate the motor performance of both healthy individuals and patients with neuromuscular disorders. However, the effect of tDCS on motor control of multiple muscles, which is a prerequisite to change in motor performance, is currently unknown. Using dimensionality reduction analysis, we investigated whether bilateral tDCS over M1 modulates the coordinated activity of 12 muscles. Fifteen healthy men participated in this randomized, double-blind crossover study. Each participant received a 20-min sham and 2-mA stimulation bilaterally over M1 (anode on the right M1 and cathode on the left M1), with a minimum washout period of 4?days. Muscle activation and end-point kinematics were evaluated during a task where participants reached out to a marked target with non-dominant hand as fast as possible, before and immediately after tDCS application. We found decreased similarity in motor modularity and significant changes in muscle activation in a specific motor module, particularly when reaching out to a target placed within arm’s length and improved smoothness index of movement only following 2-mA stimulation. These findings indicate that clinicians and researchers need to consider the simultaneous effect of bilateral tDCS over M1 on multiple muscles when they establish tDCS protocol to change in motor performance of patients with neuromuscular deficits.     

Examining Multi-Sector Community Collaboratives as Vehicles for Building Organizational Capacity

While community collaboratives have emerged as a prominent vehicle for fostering a more coordinated community response to complex issues, research to date suggests that the success of these efforts at achieving community/population-level improvements is mixed. As a result, researchers and practitioners are increasing their focus on the intermediate outcomes accomplished by these entities. The purpose of this study is to expand upon this examination of potential intermediate outcomes by investigating the ways in which collaboratives strengthen the capacity of the organizations who participate as members. Utilizing a mixed methods design, we present an empirically-based framework of organizational outcomes associated with participation in a community collaborative. The dimensions of this framework are validated based on quantitative findings from representatives of 614 different organizations and agencies nested within 51 different community collaboratives. This article then explores how the characteristics of organizations and their representatives relate to the nature and type of impacts associated with membership. Based on study findings, we argue that community collaboratives can be effective interventions for strengthening organizational capacity across all sectors in ways that can promote greater community resiliency.     

Confort des élèves et performance du bâtiment scolaire

Schools today are designed above all as educational tools and do not always take sufficient account of the physical parameters that are nevertheless environmental factors that have an impact on the capacity to read and concentrate. The aim of our study is to compare the comfort perceived by children in two schools, one with traditional design, the other with a modern design. Two types of tool were used: (a) an analytical study of the plans of the two schools, and (b) a survey using questionnaires completed by 232 elementary school children (8-10 years old). We discuss the results showing that the children in the school with a modern design had higher scores on the “Disturbance” dimension, and on “Privacy”.     

Préservation d’une image positive de soi dans un cadre de vie « à risque »

According to social identity theory (Tajfel, 1972), individual try to maintain a positive self-image. Places at which he/she is attached contribute to identity building (Proshansky et al., 1983; Twigger-Ross & Uzzell, 1996). Therefore, individual will try to maintain a positive a positive and stable image of such places. Our study is interested in what is the representation of their living area for individuals living in coastal area considered as exposed to erosion/flood risk, and attached to it. We are focused on how this representation influences their perception to coastal risk. We assume that individual attached to a place which he/she consider as “at risk” will put in place a strategy to preserve the positive image of this place and of himself/herself. Analyzing answers to a questionnaire, results demonstrate that individuals considering a place which they are attached as “at risk” mitigate the danger impact on that space. Thus, they conciliate probability of such negative event on place which they identifying themselves with positive image of this place and, by extension, of themselves.     

Rate of Torque Development and Feedforward Control of the Hip and Knee Extensors: Gender Differences

The purpose of this study was to determine whether women demonstrate decreased rate of torque development (RTD) of the hip and knee extensors and altered onset timing of the vastus lateralis and gluteus maximus during a drop-jump task when compared with men. On average, women demonstrated significantly lower normalized RTD of the hip extensors (women: 11.6 ± 1.3 MVT.s^?1, men: 13.1 ± 0.9 MVT.s^?1; p ≤ .01); however, there was no significant difference in knee extensor RTD. Women also demonstrated significantly earlier activation of their vastus lateralis (women: 206.0 ± 130.6 ms, men: 80.9 ± 69.6 ms; p ≤ .01) and gluteus maximus (women: 85.7 ± 58.6 ms, men: 54.5 ± 35.4 ms; p = .02). In both men and women, there was a significant negative correlation between the hip extensor RTD and the vastus lateralis electromyographic onset time (men: r = –.386, p = .046; women: r = –.531, p = .008). The study findings suggest that women may utilize a feedforward control strategy in which they activate their knee extensors earlier than men to compensate for deficits in hip extensor RTD. The impaired capacity to rapidly stabilize the hip and knee joints during dynamic maneuvers may contribute to the increased risk of anterior cruciate ligament injury observed in women.     

A Historical Perspective on the Future of Behavior Science

Like all natural sciences, behavior science has much to offer toward an understanding of the world. The extent to which the promise of behavior science is realized, though, depends upon the extent to which we keep what we know before us. This paper considers fundamental concepts in behavior science, including the concepts of behavior, stimulation, setting conditions, and language. In considering these concepts, we revisit comments from B. F. Skinner and J. R. Kantor and also consider some areas of behavior analytic research and the implications they have for reconsidering long-held assumptions about the analysis of behavior. We hope that, in considering our foundations, the vitality and strength of the discipline might be enhanced, our impact on science improved, and our future secured.