大学生工作记忆容量对图形推理影响的眼动研究

采用眼动技术,选取瑞文图形推理测验作为实验材料,探讨工作记忆对于图形推理过程的影响。实验为2(工作记忆容量:高、低)×2(性别:男、女)×3(题目难度:高、中、低)的混合实验设计。以扫视时间、眼跳幅度、注视次数、扫视次数、瞳孔直径为因变量指标。实验结果表明:第一,不同性别大学生进行图形推理过程的眼动模式有一定差异,但这种差异并非由工作记忆差异所导致,而是图形推理策略不同所引起;第二,工作记忆容量高低影响图形推理过程,由于工作记忆影响注意资源分配,从而工作记忆容量高低不同会导致采用不同的策略进行图形推理,不仅影响工作记忆推理过程,也导致推理成绩的差异。这些结果能为学生选择适合自己的学习策略、因材施教以及考试测评提供依据。     

Anxiety, a benefit and detriment to cognition: behavioral and magnetoencephalographic evidence from a mixed-saccade task

Anxiety is typically considered an impediment to cognition. We propose anxiety-related impairments in cognitive-behavioral performance are the consequences of enhanced stimulus-driven attention. Accordingly, reflexive, habitual behaviors that rely on stimulus-driven mechanisms should be facilitated in an anxious state, while novel, flexible behaviors that compete with the former should be impaired. To test these predictions, healthy adults (N=17) performed a mixed-saccade task, which pits habitual actions (pro-saccades) against atypical ones (anti-saccades), under anxiety-inducing threat of shock and safe conditions. Whole-head magnetoencephalography (MEG) captured oscillatory responses in the preparatory interval preceding target onset and saccade execution. Results showed threat-induced anxiety differentially impacted response times based on the type of saccade initiated, slowing anti-saccades but facilitating erroneous pro-saccades on anti-saccade trials. MEG source analyses revealed that successful suppression of reflexive pro-saccades and correct initiation of anti-saccades during threat was marked by increased theta power in right ventrolateral prefrontal cortical and midbrain regions (superior colliculi) implicated in stimulus-driven attention. Theta activity may delay stimulus-driven processes to enable generation of an anti-saccade. Moreover, compared to safety, threat reduced beta desynchronization in inferior parietal cortices during anti-saccade preparation but increased it during pro-saccade preparation. Differential effects in inferior parietal cortices indicate a greater readiness to execute anti-saccades during safety and to execute pro-saccades during threat. These findings suggest that, in an anxiety state, reduced cognitive-behavioral flexibility may stem from enhanced stimulus-driven attention, which may serve the adaptive function of optimizing threat detection.     

依恋安全对自传记忆提取现象学特征的影响

个体在回忆自传记忆时的主观体验特征称为自传记忆的现象学特征,这种个体精神现象学特征的早期推动是个体依恋特征。研究采用依恋故事阅读启动范式,探讨依恋安全对自传记忆现象学特征提取的影响。研究结果显示,安全依恋启动组的自传记忆可得性、清晰性和具体性显著高于对照组,不安全依恋启动组的自传记忆可得性和生动性显著低于对照组,且关系自我构念在依恋安全水平与自传记忆清晰性、具体性、可得性和生动性之间起部分中介作用。研究从新的角度表明,依恋建构着个体关系自我构念,并影响自传记忆现象学特征。     

Movement Control Strategies in a Dynamic Balance Task in Children With and Without Developmental Coordination Disorder

Abstract

Our study aimed to analyze movement control strategies using predefined criteria for amplitude and differences in these strategies between children with and without DCD. Children with (n?=?28) and without DCD (n?=?15) were included. A video-observation-tool was used to score the moving body parts during a Wii Fit slalom task over multiple time points. Two-step cluster analysis was used to extract distinct movement strategies. Two different movement strategies were identified that were independently validated by a measure of task performance and a subjective mark of quality of the movement. Initial differences between groups and changes over time toward the more successful strategy were found in both groups, albeit in a different percentage. This study shows that the more efficient movement strategy is seen in the majority of the TD children and only in a small number of children with DCD, even after practice.     

Correlations Between Handshape and Movement in Sign Languages

Sign language phonological parameters are somewhat analogous to phonemes in spoken language. Unlike phonemes, however, there is little linguistic literature arguing that these parameters interact at the sublexical level. This situation raises the question of whether such interaction in spoken language phonology is an artifact of the modality or whether sign language phonology has not been approached in a way that allows one to recognize sublexical parameter interaction. We present three studies in favor of the latter alternative: a shape-drawing study with deaf signers from six countries, an online dictionary study of American Sign Language, and a study of selected lexical items across 34 sign languages. These studies show that, once iconicity is considered, handshape and movement parameters interact at the sublexical level. Thus, consideration of iconicity makes transparent similarities in grammar across both modalities, allowing us to maintain certain key findings of phonological theory as evidence of cognitive architecture.     

Effects of Developmental Task Constraints on Kinematic Synergies during Catching in Children with Developmental Delays

Abstract

The aim of this study was to examine effects of a task intervention on kinematic synergies in catching. Participants were young children (5.58?±?0.52?years) with the lowest scores on two-hand catching, according to assessments with the Test of Gross Motor Development-2 (TGMD-2) and were allocated into two groups. The constraints group took part in an 8-week intervention, whereas the control group experienced a typical physical education. Both groups were assessed with motor development and kinematic coordination measures with a catching task with a ball thrown from 2?m distance. Kinematic variables were recorded using a wireless motion capture system. A principal component analysis (PCA) was used to measure the kinematic synergies formed among active body parts. Two synergies that emerged in catching were mainly utilised for “reaching” and “catching” the ball. The control group tended to re-organise the majority of active body parts into two functional units in all phases, whereas the constraints group adapted their active parts into functional units according to the requirement of the novel movement in the transfer task. The findings of this study suggested that task constraints could facilitate object control by re-organisation of active body parts into functional synergies to achieve successful performance.     

From anger to solidarity: The emotional echo-chamber of Gezi park protests

By using the Gezi Park protests that took place in Turkey in 2013 as a case, we explore the significance of emotional echo-chamber involved in protests. The analyses are composed of thirty-seven interviews conducted with activists on how they define and understand their preferences and motivations for protesting. We discuss how participants get influenced by beliefs, motives and opinions and bring forth the changes of emotions during such processes and help create an emotional echo-chamber.     

Picturing ourselves in the world: Drawings,interpretative phenomenological analysis and the relational mapping interview

ABSTRACT

Some aspects of experience can be challenging for research participants to verbalise. Interpretative phenomenological analysis (IPA) researchers need to get experience-near to meet their phenomenological commitments, capturing the “texture” and quality of existence, and placing participants in relation to events, objects, others, and the world. Incorporating drawing into IPA designs provides a vehicle through which participants can better explore and communicate their lifeworlds. IPA researchers also require rich accounts to fulfil their interpretative commitments. Drawing taps into multiple sensory registers simultaneously, providing polysemous data, which in turn lends itself to hermeneutic analysis. This article outlines a multimodal method, the relational mapping interview, which was developed to understand the relational context of various forms of distress and disruption. We illustrate how the approach results in richly nuanced visual and verbal accounts of relational experience. Drawing on an “expanded hermeneutic phenomenology,” we suggest how visual data can be analysed within an IPA framework to offer significant experiential insights.