Current Location:home > Browse

Subjects

Institution

1. chinaXiv:202101.00082 [pdf]

发展性阅读障碍的听觉时间加工缺陷

王润洲; 毕鸿燕
Subjects: Psychology >> Developmental Psychology

发展性阅读障碍是指个体在智力正常并且不缺乏学校教育的情况下,仍无法获得与年龄相匹配的阅读技能的一种学习障碍,其缺陷的本质一直是研究者争论的焦点。大量研究显示,阅读障碍者常表现出听觉时间加工损伤。在行为层面,阅读障碍者难以辨别快速、连续呈现刺激的顺序以及刺激本身的动态时间特征。在神经层面,阅读障碍者诱发的失匹配负波更弱且具有异常的神经同步加工。这些损伤同时存在于对言语和非言语刺激的加工中,表明听觉时间加工缺陷非言语加工所特有。未来的研究还需阐明以下几个问题:1)阅读障碍的听觉时间加工缺陷发生在哪些时间窗口,随年龄增长如何变化;2)阅读障碍听觉时间加工缺陷在神经层面的时间进程是怎样的;3)听觉时间加工缺陷是否为阅读障碍的核心缺陷。

submitted time 2021-01-27 Hits14Downloads9 Comment 0

2. chinaXiv:202101.00080 [pdf]

两人和三人最后通牒博弈任务中嗓音吸引力对决策的影响

尚俊辰; 刘智慧; 王笑雨; 迟智超; 李卫君
Subjects: Psychology >> Cognitive Psychology

本研究用两人和三人最后通牒博弈任务探究男性嗓音吸引力对决策的影响。实验1发现,高吸引力的嗓音会提高被试对不公平分配方案的接受率。实验2发现,即使分配方案对第三方接受者公平,对被试不公平,第三方接受者的高吸引力嗓音仍然会提高被试对方案的接受率。综上,嗓音吸引力可以诱发类似面孔吸引力的“美貌津贴”效应。

submitted time 2021-01-26 Hits87Downloads43 Comment 0

3. chinaXiv:202101.00081 [pdf]

青少年早期抑郁和自伤的联合发展轨迹:人际因素的作用

黄垣成; 赵清玲; 李彩娜
Subjects: Psychology >> Developmental Psychology

通过对859名初中生历时3年的3次追踪测量, 考察了抑郁和自伤的独立与联合发展轨迹, 并对三种重要人际关系(亲子关系、同伴关系、师生关系)在二者联合发展中的作用进行检验。结果发现, 青少年早期抑郁和自伤分别呈现4条和3条异质性发展轨迹; 二者的联合发展轨迹包含“低抑郁-低自伤-稳定”、“低抑郁-低自伤-增长”、“中抑郁-中自伤-降低”三类; 父母心理控制和同伴接纳分别为青少年早期抑郁和自伤的风险与保护性因素。

submitted time 2021-01-26 Hits92Downloads44 Comment 0

4. chinaXiv:202101.00079 [pdf]

振动触觉频率信息的工作记忆容量及存储机制

王春地; 王大辉
Subjects: Psychology >> Cognitive Psychology

工作记忆可以同时保存多个信息并且容量有限,这一内在机制是工作记忆研究的重点问题。视觉和言语等研究领域都发现工作记忆能够存储多个信息单元, 但对振动触觉工作记忆是否能存储多个频率信息目前尚无相关研究。由于振动触觉频率刺激和视觉刺激具有不同的神经编码机制,以及振动频率信息是通过躯体感觉产生的模拟的、单维的、参数化信息,振动触觉工作记忆容量及其加工存储机制的研究也必不可少。首先,本项目将采用新的实验范式,探究不同的刺激呈现方式以及不同反应报告方式下,振动触觉工作记忆的容量及其认知机制。其次,本项目也将同时运用功能磁共振成像(fMRI)技术,来阐述振动触觉工作记忆加工存储的神经机制。探究基于触觉频率信息的参数工作记忆容量及其神经机制是完善工作记忆模型的重要补充,将有助于提高我们对工作记忆系统的理解,并为视觉、听觉、触觉多模态感知觉信息的跨通道研究奠定基础。

submitted time 2021-01-25 Hits92Downloads39 Comment 0

5. chinaXiv:202101.00078 [pdf]

语法的进化连续性及进化起源解释

殷融; 赵嘉
Subjects: Psychology >> Other Disciplines of Psychology

语法是人类交流系统有别于其他动物的关键特征之一。行为比较研究表明,除人类外的其他灵长目动物也能理解并掌握抽象的顺序排序规则;神经生物学比较研究表明,支持排序处理的神经机制来自人类与其他灵长目动物共同具有的脑区。因此语法所依赖的序列学习能力在人类与其他灵长目动物间具有进化连续性。词汇限制假说、事件感知假说与自我驯化假说分别从不同角度对人类语法的进化起源进行了解释。未来研究需要探讨人工语法任务中所发现的脑神经机制是否是层级结构加工的通用处理器,并进一步澄清语义加工与语法加工的关系。

submitted time 2021-01-24 Hits116Downloads55 Comment 0

6. chinaXiv:201904.00075 [pdf]

A new Lorentz violating model with particle’s "maximum energy"

胡锦文
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

在Lorentz破缺模型中,通常会讨论彩虹模型,因为彩虹模型可以使粒子的能量具有极限而不是与Lorentz变换相对应的具有无限值,而这在量子引力中被认为是必需的。然而,本文表明,当我们只是坚持时空是均匀的,空间是各向同性的并且所有惯性系统都是等价时,并没有必要将光速限制为常数。并且由于光速的变化,我们可以完全构造惯性系统的坐标变换,使粒子的能量有一个极限,而这与彩虹模型相同。 此外,在最近的论文中,作为超高能量尺度的测试,彩虹模型用于研究伽马射线爆,例如GRB 160509A事件,该事件强烈暗示光速随其能量变化的线性形式。所以我们也分析了这个事件,发现我们的模型和彩虹模型之间存在联系。最后,我们简要讨论了如何在超高能量级的未来粒子实验中验证这两个模型。

submitted time 2021-01-24 Hits12760Downloads412 Comment 0

7. chinaXiv:202002.00086 [pdf]

概念内隐记忆中的注意促进效应

孟迎芳; 董月晴; 陈荃
Subjects: Psychology >> Cognitive Psychology

Swallow和Jiang (2010)最早发现,编码时的目标探测会促进同时呈现的背景信息在随后记忆测验中的表现,并将这一现象称为注意促进效应(Attentional Boost Effect , ABE)。随后研究发现这一现象并不会出现在概念内隐测验中,由此提出目标探测主要促进的是背景信息的知觉加工,而非语义加工。本研究通过三个实验,操纵了对背景信息的编码加工类型(知觉加工或概念加工)。结果发现,当与目标探测同时进行的是对背景信息的概念加工任务,则ABE会出现在随后的概念内隐测验中。反之,当对背景信息进行的是知觉加工任务时,则ABE会出现在随后的知觉内隐测验而不是概念内隐测验中。这些结果表明,目标探测既可能促进背景信息的知觉加工,也可能促进背景信息的语义加工,但只有在目标探测下背景信息的编码加工与随后内隐测验中所依赖的提取加工具有一致性,才会产生ABE。

submitted time 2021-01-24 Hits77Downloads888 Comment 0

8. chinaXiv:202101.00001 [pdf]

中国集体主义文化下的一致性行动是如何达成的?责任意识动态模型的构建与检验

尹彬; 吴新宇; 安雪辉; 张秋婷; 杨珮琼; 和宜园; 马楠; 王馨曼
Subjects: Psychology >> Social Psychology

[目的]基于新冠疫情爆发后中国民众可以短时间内戴上口罩这一现象,本研究探讨了中国集体主义文化下一致性行动的达成机制。 [方法]通过逻辑整合前人研究及疫情期间民众戴口罩行为动机的全国性问卷调查结果,研究首先构建出集体主义文化下的责任意识理论模型,并提出了其随社会与组织情境变化而动态变化的可能性;而后研究采用问卷、访谈、主题统觉测验和实验的方法验证了集体主义文化下的责任意识模型及其动态变化的存在和原因,且推测该责任意识模型的不同形态会导致集体目标下不同水平的一致性行动,进而设计了情境启动的问卷实验。 [结果]1、集体主义文化下的责任意识微观模型可以分为个体责任和互依责任两个部分:当互依责任占主导时,个体与集体中的他人形成元责任互依,构成责任意识的中观模型;集体中所有个体的元责任互依相互连结形成类似于“中国结”的宏观模型;2、由于自我构念组成随情境的变化引发了责任意识模型中个体责任和互依责任的强弱变化,责任意识的“中国结”模型呈现出随情境变化而产生的动态变化;3、问卷实验的结果说明了在集体目标的驱使下,与集体责任互依的个体的一致性行动倾向会显著增强。 [局限]作为将中国本土心理学和西方文化心理学视角相结合进行理论建模和实证检验的初步探索,本研究离其最终目标“用世界通用的学术语言讲好中国故事”还有较长的路要走。 [结论]中国集体主义文化下民众的责任意识可以用“中国结”来形象表征,且其由自我构念随情境变化而产生的不同形态会导致集体目标驱使下不同水平的一致性行动。

submitted time 2021-01-24 Hits126Downloads327 Comment 0

9. chinaXiv:202101.00071 [pdf]

Damage by wind-blown sand and its control measures along the Taklimakan Desert Highway in China

LI Congjuan; WANG Yongdong; LEI Jiaqiang; XU Xinwen; WANG Shijie; FAN Jinglong; LI Shengyu
Subjects: Geosciences >> Geography

Desertification is one of the most serious environmental problems in the world, especially in the arid desert regions. Combating desertification, therefore, is an urgent task on a regional or even global scale. The Taklimakan Desert in China is the second largest mobile desert in the world and has been called the ''Dead Sea'' due to few organisms can exist in such a harsh environment. The Taklimakan Desert Highway, the longest desert highway (a total length of 446 km) across the mobile desert in the world, was built in the 1990s within the Taklimakan Desert. It has an important strategic significance regarding oil and gas resources exploration and plays a vital role in the socio-economic development of southern Xinjiang, China. However, wind-blow sand seriously damages the smoothness of the desert highway and, in this case, mechanical sand control system (including sand barrier fences and straw checkerboards) was used early in the life of the desert highway to protect the road. Unfortunately, more than 70% of the sand barrier fences and straw checkerboards have lost their functions, and the desert highway has often been buried and frequently blocked since 1999. To solve this problem, a long artificial shelterbelt with the length of 437 km was built along the desert highway since 2000. However, some potential problems still exist for the sustainable development of the desert highway, such as water shortage, strong sandstorms, extreme environmental characteristics and large maintenance costs. The study aims to provide an overview of the damages caused by wind-blown sand and the effects of sand control measures along the Taklimakan Desert Highway. Ultimately, we provide some suggestions for the biological sand control system to ensure the sustainable development of the Taklimakan Desert Highway, such as screening drought-resistant species to reduce the irrigation requirement and ensure the sound development of groundwater, screening halophytes to restore vegetation in the case of soil salinization, and planting cash crops, such as Cistanche, Wolfberry, Apocynum and other cash crops to decrease the high cost of maintenance on highways and shelterbelts.

submitted time 2021-01-22 From cooperative journals:《Journal of Arid Land》 Hits107Downloads48 Comment 0

10. chinaXiv:202101.00072 [pdf]

How precipitation and grazing influence the ecological functions of drought-prone grasslands on the northern slopes of the Tianshan Mountains, China?

HUANG Xiaotao; LUO Geping; CHEN Chunbo; PENG Jian; ZHANG Chujie; ZHOU Huakun; YAO Buqing; MA Zhen; XI Xiaoyan
Subjects: Geosciences >> Geography

Drought-prone grasslands provide a critical resource for the millions of people who are dependent on livestock for food security. However, this ecosystem is potentially vulnerable to climate change (e.g., precipitation) and human activity (e.g., grazing). Despite this, the influences of precipitation and grazing on ecological functions of drought-prone grasslands in the Tianshan Mountains remain relatively unexplored. Therefore, we conducted a systematic field investigation and a clipping experiment (simulating different intensities of grazing) in a drought-prone grassland on the northern slopes of the Tianshan Mountains in China to examine the influences of precipitation and grazing on aboveground biomass (AGB), soil volumetric water content (SVWC), and precipitation use efficiency (PUE) during the period of 2014–2017. We obtained the meteorological and SVWC data using an HL20 Bowen ratio system and a PR2 soil profile hydrometer, respectively. We found that AGB was clearly affected by both the amount and seasonal pattern of precipitation, and that PUE may be relatively low in years with either low or excessive precipitation. The PUE values were generally higher in the rapid growing season (April–July) than in the entire growing season (April–October). Overall, moderate grazing can promote plant growth under water stress conditions. The SVWC value was higher in the clipped plots than in the unclipped plots in the rapid growing season (April–July), but it was lower in the clipped plots than in the unclipped plots in the slow growing season (August–October). Our findings can enhance the understanding of the ecological effects of precipitation and grazing in drought-prone grasslands and provide data that will support the effective local grassland management.

submitted time 2021-01-22 From cooperative journals:《Journal of Arid Land》 Hits100Downloads51 Comment 0

12345678910  Last  Go  [1446 Pages/ 14451 Totals]