Early family adversity,stability and consistency of institutional care and infant cognitive,language and motor development across the first six months of institutionalization

This study extends research on the effects of institutionalization—by examining the trajectories of cognitive, language and motor development of 64 Portuguese infants and toddlers across the first six months of institutionalization, while determining whether pre-institutional adversities and the stability and consistency of institutional care predict children’s development. At time of enrollment, 23.4%, 32.8% and 31.3% of the children were moderately to severely delayed, respectively, in their cognitive, linguistic and motor functioning. Developmental problems persisted after six months of institutionalization. The accumulation of early pre-institutional adversities predicted cognitive and motor limitations at admission to the institutions, but not variation in subsequent development. The stability and consistency of institutional care also failed to predict developmental growth and change. Children who had never lived with their families of origin showed a better language development at enrollment than their counterparts who had lived with their families of origin before institutionalization. Such advantage was followed by a deceleration in language growth after six months of institutional placement. Results are discussed in terms of short- vs. longer-term effects of institutionalization.     

自尊稳定性的认知神经机制

自尊稳定性(自尊在短期内波动的幅度)是一种具有重要心理功能的人格特质, 它既不同于自尊水平, 也区别于情境性自尊, 但在理论和测量上却与后两者具有密不可分的联系。然而, 由于目前人们对于自尊稳定性的认知神经机制知之甚少, 所以并不清楚它与自尊水平在生理机制上的关系是什么, 更不了解它会如何调节情境性自尊。鉴于此, 本研究计划将自尊稳定性、自尊水平和情境性自尊置于整合的认知神经加工模型(神经内分泌-脑-行为)之中, 通过融合心理测量、脑成像与应激诱发等多种技术指标, 力争全方位、多角度揭示自尊稳定性的认知神经机制, 及其与自尊水平、情境性自尊间的区别和联系。     

Can children resist making interpretations when uncertain?

In two experiments, we examined young children's ability to delay a response to ambiguous input. In Experiment 1, 5- and 6-year-olds performed as poorly when they needed to choose between basing an interpretation on ambiguous input and delaying an interpretation as when making explicit evaluations of knowledge, whereas 7- and 8-year-olds found the former task easy. In Experiment 2, 5- and 6-year-olds performed well on a task that required delaying a response but removed the need to decide between strategies. We discuss children's difficulty with ambiguity in terms of the decision-making demands made by different procedures. These demands appear to cause particular problems for young children.     

线索呈现位置对概率类别学习的影响

当前概率类别学习中主要存在多系统和单系统两种观点之争, 而持不同观点的研究者在其实验中分别采用了不同的线索位置呈现方式, 因此本研究采用经典的天气预测任务通过操纵线索位置的呈现方式来进一步探讨其对概率类别学习的影响。本研究包括2个实验：实验1考察所有线索位置固定和随机对概率类别学习系统的影响; 实验2通过单线索模式下线索位置固定考察概率类别学习的策略。结果发现, 当所有线索的呈现位置固定时, 概率类别学习是外显学习; 而当所有线索的呈现位置随机时, 概率类别学习是内隐学习; 而当只在线索单独出现时固定其位置, 概率类别学习仍是内隐学习。结果表明, 线索位置的不同呈现方式会影响概率类别学习中外显和内隐学习系统的竞争, 研究支持了多系统观点, 且概率类别学习的主要策略可能是多线索策略而不是单模式策略。     

Modeling dynamic inconsistency with a changing reference point

A rational principle of decision making called dynamic consistency was tested by presenting decision makers with a sequence of two gambles. The first gamble was obligatory. Before playing the first gamble, participants were asked to make a planned choice as to whether they would take the second gamble. After experiencing the actual results of the first gamble, decision makers were asked to make a final choice regarding the second gamble. Dynamic consistency requires agreement between the planned and final choices. Violations of dynamic consistency were observed, e.g. anticipating a gain in the first gamble, decision makers planned to take the second gamble; after experiencing the gain, they changed their minds and rejected the second gamble. Two models of dynamic inconsistency were compared. One assumes that experience shifts the reference point and changes the utility associated with the gamble; another assumes that experience changes the subjective probability associated with the gamble. The reference point model provided the best account for the findings. Copyright © 2003 John Wiley & Sons, Ltd.     

非文字内隐学习的优势效应

本研究以大学生为被试,运用计算机将人工语法范式程序化,分别以色块串和色词串为材料,研究颜色内隐和外显学习的特点;并增设时间变量（单元）以了解学习的详细进程。结果发现：1.学习材料上存在主效应,非言语材料（包块）较言语材料（色词）更适合于内隐加工。2.时间变量上也存在主效应,整体呈递增趋势;3.指导语上不存在主效应,即内隐学习在不同材料上的优势效应依然存在。实验结果极好地支持了非文字内隐学习优势效应的假设。     

文字再认的内隐和外显记忆的发展研究

本研究旨在探索内隐和外显记忆的毕生发展模式。实验采用5(年龄:老年、中年、大学生、初三和高小)×2(贡献来源:意识和无意识)的两因素混合设计,通过加工分离程序(PDP)的包含和排除测验,计算意识和无意识的贡献大小。结果显示:(1)在文字再认的意识贡献中,年龄差异极其显著。高小(11岁左右)的意识贡献水平达到最高点;从初三开始,意识贡献水平呈倒U曲线发展。(2)在文字材料再认的无意识贡献水平上,年龄差异不显著。事实说明,内隐记忆和外显记忆存在发展性的分离,支持多重记忆系统理论。     

Some Weakened Gödelian Ontological Systems

We describe a KB Gödelian ontological system, and some other weak systems, in a fully formal way using theory of types and natural deduction, and present a completeness proof in its main and specific parts. We technically and philosophically analyze and comment on the systems (mainly with respect to the relativism of values) and include a sketch of some connected aspects of Gödel's relation to Kant.     

Student Preference for Explicit Timing and Interspersal Procedures as a Function of Math Problem Completion Rates: Testing the Discrete Task Completion Hypothesis

A within-subjects design was used to compare explicit timing and interspersal with college students. Students were given 3 minutes to complete problems on the explicit timing assignment (25 problems, 3 digits –3 digits) and the interspersal assignment (25 similar problems and 10 problems, 1 digit –1 digit). Results indicated that: (a) students completed more total problems during interspersal for both trials, (b) students completed more target problems during explicit timing for the second trial, and (c) students only preferred interspersal for the first trial. The data from trial one fit the discrete task completion hypothesis and matching law, yet the data from trial two do not match as closely (Skinner, 2002). Discussion focuses on continued need for more research on academic interventions, comparing academic interventions, the discrete task completion hypothesis, and the matching law.     

内隐推理的实验研究

采用加工分离程序和多重分离程序,以瑞文高级推理测验为实验材料,对内隐推理进行了实验研究。实验1对包含测验与排除测验中正确猜测的期望概率进行了估计;实验2采用公式P1=Pc∪PA∪R1和PE=PC^－∩(PA∪RE)对外显推理和内隐推理的贡献进行了计算。结果发现存在显著的外显推理和内隐推理效应。