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1. chinaXiv:202111.00014 [pdf]

生理周期对情景记忆的影响

李建花; 解佳佳; 庄锦英
Subjects: Psychology >> Cognitive Psychology

来自进化心理学的理论及研究结果提示,女性性激素可能是情景记忆的重要影响因素,但是,具体机制尚不清晰。本研究以女性生理周期性激素水平的自然变化构成的两个时期(卵泡后期、黄体中期)为自变量,利用“What-Where-When Task”情景记忆任务(实验1),结合事件相关电位(event-related potential,ERP)技术(实验2),探讨生理周期不同阶段完成情景记忆任务的成绩及其可能的内在机制。实验一招募生理周期稳定的33名女性为被试,在卵泡后期和黄体中期各参加一次实验,随机顺序依次完成O任务(仅记忆物品,object)、P任务(仅记忆物品位置,position)、OO任务(记忆物品及其呈现顺序,object + order,)、OP任务(记忆物品及其呈现位置,object + position)以及PO任务(记忆物品呈现位置及顺序,position + order)。结果发现,在完成PO任务时,黄体中期的回忆正确率显著高于卵泡后期。实验二借用事件相关电位技术,进一步探究生理周期影响情景记忆PO任务的原因,结果发现,黄体中期额叶脑区的P300以及LPC波的振幅显著大于卵泡后期,且完成PO任务时的感受性与右侧额叶P300振幅显著正相关。基于上述ERP的结果,可以认为,黄体中期在PO任务上的好成绩可能得益于显著增强的认知控制能力,这一解释符合前人研究结论。总之,本研究发现:生理周期对情景记忆中客体的空间位置与时间顺序整合的记忆产生显著影响,黄体中期的记忆效果显著好于卵泡后期,可能是因为该时期显著增强的认知控制能力。本研究有望为理解影响情景记忆的因素提供新的视角。

submitted time 2021-11-13 Hits2842Downloads116 Comment 0

2. chinaXiv:202111.00012 [pdf]

家庭读写环境与儿童接受性词汇发展关系的元分析

刘海丹; 李敏谊
Subjects: Psychology >> Educational Psychology

家庭读写环境(home literacy environment, HLE)与儿童接受性词汇(receptive vocabulary)发展的关系一直备受关注,但HLE内涵不清、各指标效应值强度不明,以及近年来两者关系差别较大等问题极大地限制了人们对该领域的认识。本文运用元分析技术对近三十年国内外84篇相关实证研究进行分析。结果显示:HLE与儿童接受性词汇发展为中等程度正相关(r=0.31)。针对年代、文化背景、儿童年龄以及测量方法的调节效应检验表明:HLE效应值随年代发展显著降低,但其核心指标亲子阅读频率的效应值基本稳定;评估HLE的问卷法和现场观察法效应值无差异,但评估亲子阅读频率的书目清单法效应值显著高于问卷法。未见文化背景和儿童年龄的显著调节作用,原因值得进一步探究。后续研究应完善HLE的概念框架,更关注社会经济及文化视角下的概念建构以及测量改进。

submitted time 2021-11-13 Hits3258Downloads110 Comment 0

3. chinaXiv:202111.00027 [pdf]

中国大陆的pm2.5和臭氧相关性关系分布和成因:动态的类胡焕庸线

高秉博; 陈晨如
Subjects: Geosciences >> Atmospheric Sciences

In recent years, China has made great efforts to control air pollution. During the governance process, it is found that fine particulate matter (PM2.5) and ozone (O3) change in the same trend among some areas and the opposite in others,which brings some difficulties to take measures in a planned way. Therefore, this study adopted multi-year and large-scale air quality data to explore the distribution of correlation between PM2.5 and O3, and proposed a concept called dynamic Simil-Hu lines to replace the single fixed division in the previous research. Furthermore, this study discussed the causes of distribution patterns quantitatively with geographical detector and random forest. The causes included natural factors and anthropogenic factors. And these factors could be divided into three parts according to the characteristics of spatial distribution: broadly changing with longitude, changing with latitude, and having local characteristics. Overall, regions with relatively more densely population, higher GDP, lower altitude, higher humidity, higher atmospheric pressure, higher surface temperature, less sunshine hours and more accumulated precipitation often corresponds to positive correlation coefficient between PM2.5 and O3, no matter in which season. The parts with opposite conditions that mentioned above are essentially negative correlation coefficient. And what’s more, humidity, global surface temperature, air temperature and accumulated precipitation are four decisive factors to form the distribution of correlation between PM2.5 and O3. In general, collaborative governance of atmospheric pollutants should consider particular time and space background and also be based on the local actual socio-economic situations, geography and geomorphology, climate and meteorology and other comprehensive factors.

submitted time 2021-11-13 Hits44Downloads13 Comment 0

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