社交网站中的自我呈现对青少年友谊质量的影响:积极反馈的中介作用

随着网络的日益普及,社交网站已成为人们活动的新领域和人际交往的新媒介。为探讨社交网站中不同的自我呈现方式、积极反馈与友谊质量的关系,采用问卷法对来自武汉市两所普通中学的817名10~19岁的学生进行调查,其中,男生423人,女生366人。研究采用偏差矫正的百分位Bootstrap法,使用Hayes(2012)编制的SPSS宏对中介效应进行检验,结果发现:(1)真实自我呈现和积极自我呈现与积极反馈、友谊质量显著正相关;(2)社交网站中的真实自我呈现既能直接预测青少年的友谊质量,也能通过积极反馈的中介作用对友谊质量产生影响,而积极自我呈现对青少年的友谊质量没有直接预测作用,只能通过积极反馈的完全中介作用对友谊质量产生影响。     

Incorporating multiple secondary targets into learning trials for individuals with autism spectrum disorder

The current study examined the outcome of presenting multiple secondary targets in learning trials for individuals with autism spectrum disorder. We compared conditions in which (a) a secondary target was presented in the antecedent and consequence of trials, (b) two secondary targets were presented in the consequence of trials, (c) one secondary target was presented in the consequence of each trial, and (d) no additional targets were presented trials. The participants acquired the majority of secondary targets. Presenting one or multiple secondary targets per trial, regardless of the location of these secondary targets, increased the efficiency of instruction in comparison to a condition with no secondary target.     

Performance of a visuomotor walking task in an augmented reality training setting

Visual cues can be used to train walking patterns. Here, we studied the performance and learning capacities of healthy subjects executing a high-precision visuomotor walking task, in an augmented reality training set-up. A beamer was used to project visual stepping targets on the walking surface of an instrumented treadmill. Two speeds were used to manipulate task difficulty. All participants (n = 20) had to change their step length to hit visual stepping targets with a specific part of their foot, while walking on a treadmill over seven consecutive training blocks, each block composed of 100 stepping targets. Distance between stepping targets was varied between short, medium and long steps. Training blocks could either be composed of random stepping targets (no fixed sequence was present in the distance between the stepping targets) or sequenced stepping targets (repeating fixed sequence was present). Random training blocks were used to measure non-specific learning and sequenced training blocks were used to measure sequence-specific learning. Primary outcome measures were performance (% of correct hits), and learning effects (increase in performance over the training blocks: both sequence-specific and non-specific). Secondary outcome measures were the performance and stepping-error in relation to the step length (distance between stepping target). Subjects were able to score 76% and 54% at first try for lower speed (2.3 km/h) and higher speed (3.3 km/h) trials, respectively. Performance scores did not increase over the course of the trials, nor did the subjects show the ability to learn a sequenced walking task. Subjects were better able to hit targets while increasing their step length, compared to shortening it. In conclusion, augmented reality training by use of the current set-up was intuitive for the user. Suboptimal feedback presentation might have limited the learning effects of the subjects.     

Molecular Lamarckism: On the Evolution of Human Intelligence

In modern times, Lamarck's view of evolution, based on inheritance of acquired traits has been superseded by neo-Darwinism, based on random DNA mutations. This article begins with a series of observations suggesting that Lamarckian inheritance is in fact operative throughout Nature. I then launch into a discussion of human intelligence that is the most important feature of human evolution that cannot be easily explained by mutational selection. Thus, we are smarter than demanded by our evolutionary experience as hunter-gatherers. The difficulty lies in the inability of neo-Darwinism to satisfactorily answer the following question: How can a large energy-costly set of genes, each member of which has little apparent benefit when first created individually, all gather into a permanent existence within a short time period in each and every member of a small population (that was dispersed and geographically isolated over a huge planet) who had a low reproductive output, a low rate of beneficial mutations, and a low level of genetic contact? The article concludes with a speculative but far-reaching epigenetic theory of intelligence that does not require DNA mutation as the exclusive source of evolutionary change. Instead, cranial feedback relating brain chemistry, as affected by brain activity including education, with the genome. When it comes to the fast rate of evolution, and the dissemination of the intelligence trait worldwide, cranial feedback could make all the difference.     

What can regular and timely student feedback tell us about the teaching and learning processes?

Most studies on the evaluation of teaching focus on the input (teacher traits) or the output (student-generated products) of the teaching and learning processes. This article is based on a case study that examines the three components of teaching and learning: input, output and process. It presents a framework for collecting quantitative and qualitative data on the quality of instruction, assessment and feedback, and learning environment in college composition courses to complement the feedback provided by the end-of-course student evaluations of teaching for the purpose of monitoring, guiding, and improving instruction.     

心理治疗中的正式反馈

<正>式反馈是近年来发展出的一项提高临床实践的有效方法,它是指利用标准化的治疗效果测量工具,系统监控当事人评定的治疗进展情况,并将当事人的进展信息提供给治疗师,以供其随后的治疗作参考之用。治疗效果问卷评定系统和合作-改变效果管理系统是目前使用较为广泛的正式反馈测量工具。正式反馈的使用不仅能够改善偏离预期进展当事人(not on track,NOT)的治疗效果,提高当事人治疗进展的速率,同时还能够促进治疗双方更好的合作。正式反馈的作用机制可以使用概念化反馈干预理论和交互作用论进行解释。影响正式反馈作用效果的因素包括反馈本身的特征、当事人初始症状严重程度、治疗师方面因素以及治疗的时长等。未来研究需关注正式反馈的研究方法、作用机制及其跨文化研究的差异。     

When does feedback about success at school hurt? The role of causal attributions

The present research provides evidence that attribution theory can serve as an explanatory framework not only to explain achievers’ reactions to their achievement based on their self generated understandings of what brought these achievements about but also when such information is provided by others. Thus, when we succeed at school, others may comment on the likely reasons for this success. The present research addressed the question what it is that makes certain types of feedback on the reasons for success at school hurtful. The results of two studies conducted in the context of a school setting demonstrated that the causal structure implied by an explanation for success explains why some explanations are perceived as hurtful and elicit anger, shame, and guilt rather than pleasure or pride. Interestingly, the perceived validity of the explanation is of relatively less importance for the elicitation of hurt feelings and anger than the content of the explanation. Overall, these results provide further evidence for the importance of attributional information for social emotions in educational settings.

3D feedback and observation for motor learning: Application to the roundoff movement in gymnastics

In this paper, we assessed the efficacy of different types of visual information for improving the execution of the roundoff movement in gymnastics. Specifically, two types of 3D feedback were compared to a 3D visualization only displaying the movement of the expert (observation) as well as to a more ‘traditional’ video observation. The improvement in movement execution was measured using different methods, namely subjective evaluations performed by official judges, and more ’quantitative appraisals based on time series analyses. Video demonstration providing information about the expert and 3D feedback (i.e., using 3D representation of the movement in monoscopic vision) combining information about the movement of the expert and the movement of the learner were the two types of feedback giving rise to the best improvement of movement execution, as subjectively evaluated by judges. Much less conclusive results were obtained when assessing movement execution using quantification methods based on time series analysis. Correlation analyses showed that the subjective evaluation performed by the judges can hardly be predicted/ explained by the ‘more objective’ results of time series analyses.     

Entrainment and Modulation of Gesture–Speech Synchrony Under Delayed Auditory Feedback

Gesture–speech synchrony re‐stabilizes when hand movement or speech is disrupted by a delayed feedback manipulation, suggesting strong bidirectional coupling between gesture and speech. Yet it has also been argued from case studies in perceptual–motor pathology that hand gestures are a special kind of action that does not require closed‐loop re‐afferent feedback to maintain synchrony with speech. In the current pre‐registered within‐subject study, we used motion tracking to conceptually replicate McNeill's ( 1992 ) classic study on gesture–speech synchrony under normal and 150 ms delayed auditory feedback of speech conditions (NO DAF vs. DAF). Consistent with, and extending McNeill's original results, we obtain evidence that (a) gesture‐speech synchrony is more stable under DAF versus NO DAF (i.e., increased coupling effect), (b) that gesture and speech variably entrain to the external auditory delay as indicated by a consistent shift in gesture‐speech synchrony offsets (i.e., entrainment effect), and (c) that the coupling effect and the entrainment effect are co‐dependent. We suggest, therefore, that gesture–speech synchrony provides a way for the cognitive system to stabilize rhythmic activity under interfering conditions.