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271.
272.
副中央凹-中央凹效应的研究现状及展望 总被引:2,自引:1,他引:1
副中央凹-中央凹效应指在阅读过程中副中央凹处词语(通常是注视词右侧的词)的特性对中央凹处词语的注视时间产生的影响。主要从四个方面总结了副中央凹-中央凹效应的研究进展:(1)副中央凹-中央凹效应的类型:同向效应、反向效应和不确定效应; (2)副中央凹-中央凹效应的研究范式:边界范式、句子正常阅读范式和词对阅读范式; (3)分析序列加工模型和平行加工模型对副中央凹-中央凹效应的认识; (4)探讨词n+1特性、词n的特性以及误差眼跳对副中央凹-中央凹效应的影响。在此基础上, 提出未来需要从研究范式和分析方法等方面对副中央凹-中央凹效应进行研究。 相似文献
273.
客体在视觉工作记忆中的存储机制 总被引:6,自引:0,他引:6
采用变化觉察范式,通过两个实验对不同类型视觉信息在工作记忆中的存储机制进行了探讨。实验一中要求记忆的客体由颜色和形状两基本特征构成;实验二中的客体为具有不同颜色及开口朝向的兰道环。通过观察检测项变化方式对记忆绩效的影响,获得以下结论:(1)对颜色和形状两基本特征的存储以整合客体为单位;(2)兰道环的颜色与开口朝向信息难以以整合客体方式存储。笔者推测,视觉工作记忆中存储的整合客体并非如现有理论假设的,是在集中注意参与下创建的,而是由并行加工阶段所获信息构成;客体中所含需集中注意提取的细节特征信息难以与其基本特征信息整合于该客体表征 相似文献
274.
采用心理不应期研究范式,三个反应时实验检测了心理旋转任务和其他认知操作任务能否并行加工的问题。在每个实验中要求被试快速、系列地完成对高低音的辨别任务(T1)和不同旋转角度的正反像辨别任务(T2),T1和T2呈现的时间间隔运用变化的SOA。结果发现:(1)T1的反应选择对T2的反应选择产生了很大的影响,在T2上PRP效应显著。心理旋转的操作成绩随着SOA的缩短而降低。(2)在T1上同样存在随着SOA缩短,反应时增加,正确率下降的趋势。T2的反应选择对T1的反应选择同样产生了显著的影响。(3)T2的反应选择对T1的中枢加工产生了相应的影响,表明当T1的反应选择占据中枢瓶颈时,心理旋转任务和其他认知操作任务在中枢瓶颈中并行得到了有效的加工 相似文献
275.
Wright AA 《Journal of the experimental analysis of behavior》2007,88(3):405-433
Rhesus monkeys were trained and tested in visual and auditory list-memory tasks with sequences of four travel pictures or four natural/environmental sounds followed by single test items. Acquisitions of the visual list-memory task are presented. Visual recency (last item) memory diminished with retention delay, and primacy (first item) memory strengthened. Capuchin monkeys, pigeons, and humans showed similar visual-memory changes. Rhesus learned an auditory memory task and showed octave generalization for some lists of notes--tonal, but not atonal, musical passages. In contrast with visual list memory, auditory primacy memory diminished with delay and auditory recency memory strengthened. Manipulations of interitem intervals, list length, and item presentation frequency revealed proactive and retroactive inhibition among items of individual auditory lists. Repeating visual items from prior lists produced interference (on nonmatching tests) revealing how far back memory extended. The possibility of using the interference function to separate familiarity vs. recollective memory processing is discussed. 相似文献
276.
Tadashi Kikuchi Michiaki Sekine Masako Nakamura 《The Japanese psychological research》2001,43(1):1-12
Dynamic temporal change in the size of functional visual field was measured using a dual task: a peripheral task in which one square in a background pattern of squares was changed in shape to a dot; and a central task involving the rapid serial visual presentation of a sequence of letters (RSVP task). The temporal lag between the occurrences of the dot and the RSVP target was manipulated. University students were asked to detect the dot and to depress a mouse button as quickly as possible while searching for the RSVP target among a sequence of distracter letters. The abrupt change in the shape of a background square in the peripheral task caused a processing deficit in the RSVP task at relative lags from –3 to –1 (255 ms to 85 ms before presentation of the RSVP target), but the encoding and retaining processes involved in identifying the RSVP target did not impair the detection of the peripheral dot. The functional visual field was found to expand while participants were performing the dual task, suggesting that preattentive detection is affected by general attentional activity. 相似文献
277.
Two processes, serial and hierarchical, are generally opposed to account for grammatical encoding in language production. In a developmental perspective, the question addressed here is whether the subject-verb agreement during writing is computed serially, once the words are linearly ordered in the sentence, or hierarchically, as soon as the number features are determined in a hierarchical frame. Adults and children from 3rd to 5th grades were requested to listen to sentences with built-in prepositional phrases or relative clauses and to transcribe them as quickly as possible. A serial hypothesis assumes that subject-verb agreement errors should be equally frequent with both preambles because each has the same length separating the subject head noun and the main verb. Conversely, according to a hierarchical view, errors should be more frequent with a prepositional phrase because the syntactic distance between the subject and the verb is greater than with a relative clause. The results revealed a main effect of the preamble manipulated in 5th graders and adults, but not in 3rd graders. These data were in favor of a hierarchical processing in older writers and a serial one in younger children. However, in 3rd grade, we assumed that the potential serial account was a result of the resource constraint on writing more than of a real serial processing of the agreement. 相似文献
278.
Stone J 《Theoretical medicine and bioethics》2002,23(6):499-518
The paper summarizes recently published dataand recommendations about healthcaredisparities experienced by African Americanswho have Medicare or other healthcare coverage.Against this background the paper addresses theethics of such disparities and howdisadvantages of vulnerable populations likeAfrican Americans are typically maintained indecision making about how to respond to suchdisparities. Considering how to respond todisparities reveals much that vulnerablepopulations would bring to the policy-makingtable, if they can also be heard when they getthere. The paper argues that vulnerablepopulations like African Americans need fairrepresentation in bodies deciding what to doabout such disparities and that fairnessrequires proportional representation at alllevels of decisions that affect healthcare – aradical change. In this decision setting, howto provide adequate protection of minoritiesneeds much further attention. The mostattractive decision-making model isdeliberative democracy. The paper shows thatin deliberation, fair representation requiresnot only having a voice in decisions, but afair hearing of those voices. Achieving a fairhearing requires changes in norms ofcommunication and training of all to giveimportance to greetings and other measures ofcivility and trust building, and to be open todiverse forms of expression. Decisions abouthow to respond to healthcare disparities wouldinclude what programs to initiate for whom, howto evaluate the programs, and what to do inresponse to such evaluations. Conclusions arethat achieving such goals will take a seachange in how healthcare institutions andproviders do their business, and that socialactivism at every level will be needed toeffect these changes. The discussionhighlights many ethical issues that need muchgreater attention. 相似文献
279.
Classification of Planning and Violent Behaviours in Serial Homicide: A Cross‐National Comparison Between South Africa and the US
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Marina Sorochinski C. Gabrielle Salfati Gerard N. Labuschagne 《Journal of Investigative Psychology & Offender Profiling》2015,12(1):69-82
Recent literature suggests that different ‘styles’ of homicide will most appropriately be reflected in the different types of behaviours committed by offenders during the crime. In the last few years, there has been a move to standardise classification systems of single homicides and establish their cross‐national generalisability. Literature on serial homicide to date has mostly centred on homicides occurring in the US. However, national differences due to factors such as culture, national identity, political, and socio‐economic circumstances may decrease the applicability of these models or certain aspects thereof in other countries and thus must be evaluated. The present study tested the applicability in the South African context of a recently developed US‐based serial homicide crime scene classification framework. Specifically, this study compared the thematic differentiation in planning and violent behaviours that the offenders engage in and how this differentiation compares with that in the US. The sample consisted of 25 homicides that were in total responsible for the murder of 267 victims. Results indicated that overall, the framework is useful and applicable in the South African sample, but important environmental and contextual constraints must be taken into account. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
280.
South African Serial Homicide: Consistency in Victim Types and Crime Scene Actions Across Series
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C. Gabrielle Salfati Amber M. Horning Marina Sorochinski Gerard N. Labuschagne 《Journal of Investigative Psychology & Offender Profiling》2015,12(1):83-106
Key to understanding the significance of behavioural evidence for linkage purposes is in establishing how consistently an offender displays the same or similar behaviours across their series. There have however to date been very few studies aiming at identifying salient components of offending behaviour that can be used reliably for linking individual crimes as part of a single series. In addition, studies that have been conducted have all dealt with serial homicide in the Western world and have been based on small samples of cases from each country. Some of the recent literature has started to disentangle some of these salient features, notably the victim, violence levels, control, and planning. The current study focused on evaluating the consistency of these features across series, using a sample of serial homicides from South Africa consisting of 30 offenders with a total of 283 victims and 235 crime scenes. Results indicate that the level of interaction with the victim may be influential to the stability or instability of offending patterns across the series. How offenders approach planning in their offence also showed a certain degree of consistency, with patterns of violence being the least consistent across the series of all components tested. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献