基于认知设计系统的几何类比推理测验的编制及认知模型分析

认知诊断是一种新的测量范式。本研究首先根据Mulholland,Pellegrino＆Glaser和Whitely＆Schneider关于类比推理的研究结果,采用认知设计系统编制了几何类比推理测试题,并对所编制的测试题的质量进行验证,然后采用口语报告法分析解决几何类比推理所涉及的认知模型,结果表明：1）编制的几何类比推理测试题的质量比较好;2）学生解决类比推理所涉及的认知属性主要为置换、翻转、旋转、数量、大小、颜色与条纹和形状。     

拓广分部评分模型下计算机自适应测验变加权选题策略

摘要: 在计算机自适应测验中, 对0-1评分模型按a-分层选题是高效安全的策略,但多级评分模型的项目难度/步骤参数有多个而无法直接应用这种选题策略。信息函数能够很好地综合项目所有参数及能力参数,但最大信息量选题策略会影响考试安全。本文提出一种变加权选题策略,它通过调用一个与信息量相关联的函数,该函数与信息量成正比,与区分度的某个幂函数成反比,从而达到既能综合项目所有参数又按a分层的效果。在GPCM模型下用蒙特卡罗实验进行比较研究,结果显示新的选题策略总体效果比已有相关结果好。     

Accounting for fluctuations in body dissatisfaction

The present study evaluated whether the strength of relationship between contextual cues (presence of company and mood) and state body dissatisfaction varied as a function of individual differences in key trait measures (body shame, body surveillance tendencies, internalization of appearance standards, and trait affect) which have been linked to trait body dissatisfaction. Fifty-five undergraduate women completed a questionnaire containing the trait-based measures and then carried a Personal Digital Assistant (PDA) for a 7-day period. The PDA prompted participants six times daily to self-report their current mood and state body dissatisfaction. Multi-level modeling revealed that individual differences in body shame predicted inter-individual variability in the strength of the relationships between presence of company and state body dissatisfaction, and positive mood and state body dissatisfaction. Trait positive affect also explained variance in the positive mood state-body dissatisfaction relationship. The implications of the findings for prevention of body image disturbances are discussed.     

Hiding in plain sight: Older U.S. purpose exemplars

ABSTRACT

Despite significant research on purpose in adolescence and early adulthood, little is known about purpose in older adults. This paper defines purpose as ongoing commitment to and sustained action toward goals that are meaningful to the self and aim to contribute beyond the self. This study of purpose in later life draws on interviews of 102 respondents drawn from a U.S. nationally representative sample of 1198 men and women aged 50–92. Eighteen interviewees are identified as exemplars of purpose beyond the self and are matched with a comparison group of non-purposeful peers. Interview coding revealed that, in contrast to the non-purposeful comparison group, the purpose exemplars describe their lives as including several interconnected sources of well-being: purpose beyond the self, positive relationships, positive life engagement, a sense of competence, and freedom balanced with the desire to contribute. Implications for practitioners and the public are discussed.     

The selective directed forgetting effect: Can people forget only part of a text?

Participants studied sentences describing two different characters and then were told to forget the sentences about only one of the characters. A second list contained sentences attributed to a third character. Subsequently, they received a recall test on the sentences about the original two characters. When the sentences could be thematically integrated, participants showed no directed forgetting relative to a control group that was never told to forget. However, with unrelated sentences, participants selectively forgot the target character's sentences without forgetting the other character's sentences. This selective directed forgetting effect is a novel empirical result. We interpret the results as consistent with Radvansky's (1999) ideas about inhibition with textual materials.     

初一学生英语单词记忆策略的训练研究

在初一学生英语单词学习中引入关键词和概念归类策略训练,探讨了记忆策略的训练效果和自我效能对英语单词记忆的影响。结果发现：两种策略训练都能显著提高初一学生英语单词扇一效果相近;关键词策略训练可显著提高低自我效能被试的自我效能感;记忆自我效能对英语单词记忆行为有显著影响,高自我效能被试在训练后英语单词记忆成绩更好。     

眼动分析法在学前儿童认知研究中的应用

眼动分析法是心理学研究的一种重要手段,它对于研究儿童的认知活动有着非常重要的意义。文章介绍了眼动记录的原理、眼动指标,并对该方法在研究学前儿童的图画观看、图文阅读、视觉搜索等领域的应用进行了评介。最后,对眼动分析法在学前儿童认知研究中的应用前景进行了展望。     

“位置法”记忆训练对改善儿童至老年时期的认知功能研究

本工作采用“位置法”对118例被试(包括儿童、少年、青年、中年和老年五个年龄组)进行记忆训练研究,分析不同年龄人记忆的发展变化和认知训练对改善记忆的作用,进而探讨发展的认知功能储备能量的年龄差异。结果表明:1.老年和儿童组各项成绩明显低于青、少年组;2.认知干预措施可在一定程度上改善老年人的记忆,再次证明老年智力和记忆有一定的可塑性。但在发展的储备能量和对图形的迁移效应中也存在与记忆相似的年龄差异。     

A latent class unfolding model for analyzing single stimulus preference ratings

A multidimensional unfolding model is developed that assumes that the subjects can be clustered into a small number of homogeneous groups or classes. The subjects that belong to the same group are represented by a single ideal point. Since it is not known in advance to which group of class a subject belongs, a mixture distribution model is formulated that can be considered as a latent class model for continuous single stimulus preference ratings. A GEM algorithm is described for estimating the parameters in the model. The M-step of the algorithm is based on a majorization procedure for updating the estimates of the spatial model parameters. A strategy for selecting the appropriate number of classes and the appropriate number of dimensions is proposed and fully illustrated on some artificial data. The latent class unfolding model is applied to political science data concerning party preferences from members of the Dutch Parliament. Finally, some possible extensions of the model are discussed.The first author is supported as Bevoegdverklaard Navorser of the Belgian Nationaal Fonds voor Wetenschappelijk Onderzoek. Part of this paper was presented at the Distancia meeting held in Rennes, France, June 1992.     

青少年父母监控现状研究

本研究从北京市两所普通中学的初一到高二年级中选取了1090名中学生为被试,采用问卷调查的方式,要求他们分别报告父亲和母亲的主、客观监控水平和监控手段(控制、沟通和搜寻),以探讨我国青少年父母监控的现状。经过(2)卡方检验、相关分析t、检验和方差分析,结果表明:(1)总体来讲,母亲在家庭里是青少年的主要监控者:母亲监控的客观水平高于父亲,并且母亲使用三种监控手段的情况均多于父亲;(2)女孩受到的父母监控超过男孩:母亲对女孩的客观监控水平高于男孩,并且母亲对女孩更多使用沟通手段;父母对女孩使用控制手段的情况超过男孩;(3)父母监控的年级差异并不明显,只有父母对初一学生会更多使用沟通手段;(4)父母对沟通手段和控制手段的使用都与客观监控水平呈正相关,但与主观监控水平呈负相关,而搜寻手段使用与监控水平之间的关系则跟沟通、控制手段相反;沟通手段对客观监控水平的正向预测力最强,搜寻手段对主观监控水平的正向预测力最强。