共查询到19条相似文献,搜索用时 937 毫秒
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成年人个性特征与某些认知作业的关系 总被引:7,自引:0,他引:7
采用NEO-FFI个性问卷研究了个性特征与记忆、问题解决及视觉搜索反应时的关系。作业难度均属中下。被试为20-85岁四组成年人120名。结果:(1)相关和多元逐步回归分析结果完全一致:外向性(E)对人姓回忆及图形再认有负性预测关系,开放性(O)对人姓回忆及猜图用策略百分比有正性预测关系。(2)控制年龄因素的偏相关结果表明,神经质分(N)和清图用策略百分比,E分和图形再认、人姓回忆,认真负责分(C)和数字、字母、汉字搜索反应时均呈负相关。(3)认知指标加入个人情况诸因素作为自变量与个性特征求多元逐步回归方程显示,解决问题方案数量与E分呈负性预测关系,心理状态等因素与个性预测影响更大。(4)认知作业与个性特征关系各年龄组结果不同,两者关系青年组和老老年组较大,这可能与不同年龄成年人神经系统功能状态差异有关。 相似文献
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1对象与方法11对象Alzheimer病(下简称AD组):39例(男14,女25),随机选自上海市精神卫生中心、分部及松江协作病房,年龄65—85岁,平均74.l士59岁.病程1月一15年,平均为3.43士2.gi年。教育年限(Ed)0一五名分,平均5.0土5.2分,认知功能筛选量表(CASI)2-62分,平均27.6土159分。老年精神分裂症(下简称SS组):34例(男ZI,女13),随机选自同上单位,年龄61-87岁,平均67.5士52岁。病程17-53年,平均病程33.75土8.69年,教育年限(Ed)0-16分,平均6.9土5.6分,认知功能筛选量表(CASI)18-99分,平均55… 相似文献
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本工作以50名青年作对照,对240名65—90岁正常老人的短时记忆特点进行了研究。结果看到:1.在逻辑故事记忆、图象自由回忆、数字广度和指向记忆四项记忆成绩上,均有随年老而衰退的明显趋势。其中除数字广度外,其他三项记忆在入老年后(65岁至90岁)有继续减退的趋势。在逻辑故事、指向记忆和总分上还见到有65岁和70岁组、75岁和80岁组成绩接近的现象;2.老年人顺背数字成绩较好,对刺激序列中末端刺激的正确回忆率较高,均说明老年人的初级记忆受损较少;3.四项记忆成绩比较,青年组故事分节分最高,然后依次为图象自由回忆、顺背数字和指向记忆,而老年组则无此明显顺序;4.文化因素对记忆成绩有明显影响。 相似文献
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与年龄及认知功能相关的成人脑波功率涨落图特点 总被引:9,自引:1,他引:8
对120名20-79岁正常受试者完成了与年龄及认知功能相关的脑涨落图特点的研究。结果表明:(1)脑波优势涨落功率空间构型额低枕高梯度的随龄减小过程,在认知测验差组较好组明显;(2)脑波优势涨落功率受年龄与认知因素的交互影响集中于左前右后脑轴上;(3)脑波优势涨落功率前后梯度和左右不对称性变化表明,脑波活动的前后和左右调控可能在不同层次上发挥作用,并且,前后脑和左右脑的协调活动与认知功能有密切关系。上述结果说明,脑波功率涨落与认知功能及其老化过程有密切关系。 相似文献
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Pamela Ulbrich Jan Churan Martina Fink Marc Wittmann 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(2):183-202
ABSTRACT The present paper investigates the effects of age, sex, and cognitive factors on temporal-order perception. Nine temporal-order tasks were employed using two and four stimuli presented in the auditory and visual modalities. Significantly increased temporal-order thresholds (TOT) in the elderly were found for almost all tasks, while sex differences were only observed for two tasks. Multiple regression analyses show that the performance on most temporal-order tasks can be predicted by cognitive factors, such as speed of fluid reasoning, short-term memory, and attention. However, age was a significant predictor of TOT in three tasks using visual stimuli. We conclude (1) that age-related differences can often be attributed to cognitive factors involved in temporal-order perception, and (2) that the concept of temporal-order perception is more complex than implied by the current models. 相似文献
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This paper reports four experiments on the effects of word age of acquisition in verbal tasks. In all cases, multiple-regression analysis was used to assess the relative effects of age as opposed to other potentially relevant word attributes. Experiments 1 and 2 concerned lexical memory tasks. In Experiment 1, picture naming speeds were found to be mainly determined by picture codability and name age of acquisition. In Experiment 2, it was found that when subjects produced words in response to bigram cues, early acquired target words were more likely to be produced than later acquired words, even when frequency and other word attributes were taken into account. The remaining two experiments dealt with the episodic memory tasks of free recall and recognition. No age effects were found in these tasks. It was concluded that early age of acquisition facilitates retrieval from lexical memory but has no significant effect in episodic memory tasks. 相似文献
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双语和双言对图片命名和分类的不对称影响 总被引:3,自引:1,他引:2
采用普通话-英语双语者、粤语-普通话双言者和普通话单言者为被试, 比较他们图片命名与图片分类的成绩。结果表明, 普通话-英语双语者用优势语言命名图片的反应时比普通话单语者显著长, 错误率显著高。在第4次和第5次重复呈现图片时, 普通话-英语双语者与普通话单语者的命名反应差异不显著。普通话-英语双语者与普通话单语者对图片分类的反应差异不显著。这表明, 双语影响图片命名却不影响图片分类。粤语-普通话双言者对图片命名和图片分类的反应模式和普通话-英语双语者一致, 表明粤语-普通话双言和普通话-英语双语有类似的认知机制。普通话和粤语是作为两种语言储存在粤语-普通话双言者的头脑中的。 相似文献
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不同认知作业年老化特点的比较研究 总被引:3,自引:1,他引:2
本工作应用自行设计的软件程序和微机人机对话方式,完成六项认知作业的年老化特点的比较研究,被试506人,46—75岁。研究结果表明:1)“心算”和“符号数字”两项作业完成速度随年老迅速减慢,但测验成绩随年老缓慢降低,速度变化是该两项作业年老化过程的主要特点;2)“数字鉴别”和“计数”两项作业完成速度随年老减慢较缓;3)“双位数字顺序回忆”和“无意义图形再认”两项作业测验成绩随年老下降迅速,但前者更为明显;4)速度和成绩两项指标的个体差异均随年老有增大趋向。 相似文献
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Claire Mayor-Dubois Pascal Zesiger Martial Van der Linden Eliane Roulet-Perez 《Child neuropsychology》2016,22(6):718-734
In this study, we investigated motor and cognitive procedural learning in typically developing children aged 8–12 years with a serial reaction time (SRT) task and a probabilistic classification learning (PCL) task. The aims were to replicate and extend the results of previous SRT studies, to investigate PCL in school-aged children, to explore the contribution of declarative knowledge to SRT and PCL performance, to explore the strategies used by children in the PCL task via a mathematical model, and to see whether performances obtained in motor and cognitive tasks correlated. The results showed similar learning effects in the three age groups in the SRT and in the first half of the PCL tasks. Participants did not develop explicit knowledge in the SRT task whereas declarative knowledge of the cue–outcome associations correlated with the performances in the second half of the PCL task, suggesting a participation of explicit knowledge after some time of exposure in PCL. An increasing proportion of the optimal strategy use with increasing age was observed in the PCL task. Finally, no correlation appeared between cognitive and motor performance. In conclusion, we extended the hypothesis of age invariance from motor to cognitive procedural learning, which had not been done previously. The ability to adopt more efficient learning strategies with age may rely on the maturation of the fronto-striatal loops. The lack of correlation between performance in the SRT task and the first part of the PCL task suggests dissociable developmental trajectories within the procedural memory system. 相似文献
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Naïla Boudiaf Rafael Laboissière Émilie Cousin Nathalie Fournet Alexandre Krainik 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2018,25(1):1-22
The effect of normal aging on lexical production and semantic processing was evaluated in 72 healthy participants. Four tasks were used, picture naming (PN), picture categorization (PC), numerical judgment (NJ), and color judgment (CJ). The dependence of reaction time (RT) and correct responses with age was accounted by mixed-effects models. Participants underwent neuropsychological testing for verbal, executive, and memory functions. The RTs increase significantly with age for all tasks. After parceling out the non-specific cognitive decline, as reflected by the NJ task, the RT for the PN task decreases with age. Behavioral data were interpreted in relation with neuropsychological scores. Our results suggest that (a) naming becomes more automatic and semantic processing slightly more difficult with age, and (b) a non-specific general slowdown of cognitive processing occurs with age. Lexical production remained unaltered, based on compensatory automatic processes. This study also suggests a possible slowdown of semantic processing, even in normal aging. 相似文献
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The psychometric properties of several commonly used verbal working memory measures were assessed. One hundred thirty-nine
individuals in five age groups (18–30, 50–59, 60–69, 70–79, and 80+ years) were tested twice (Time I and Time II) on seven
working memory span measures (alphabet span, backward digit span, missing digit span, subtract 2 span, running item span,
and sentence span for syntactically simple and complex sentences), with an interval of approximately 6 weeks between testing.
There were significant effects of age on all but two of the tasks. All the measures had adequate internal consistency. Correlations
between performances at Time I and Time II were significant for all the tasks, other than the missing digit span task. The
magnitude of the correlations was similar across the age groups and ranged from .52 to .81. Classification of subjects into
discrete memory span groups on the basis of a single measure was highly inconsistent across testing sessions and tasks. Classification
into upper and lower quartiles was more stable than using a cutoff score for group membership or than classification into
high-, medium-, and low-span groups. Correlational analyses showed that there was a moderate relationship between performances
on many of the span tasks. Confirmatory factor analysis suggested that six of the seven tasks reflected a common factor. Both
test—retest reliability and stability of classification improved when a composite measure reflecting performance on several
tasks was used. 相似文献
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《Quarterly journal of experimental psychology (2006)》2013,66(1):50-62
There are a number of theories that suggest that age of acquisition (AoA) effects are not uniform across different tasks. Catling and Johnston (2006a) found greater AoA effects within an object-naming task than in a semantic classification task. They explained these findings by suggesting that AoA effects might accumulate according to how many levels of representation a task necessitates access to. Brysbaert and Ghyselinck (2006) explain the difference in AoA effects by proposing two distinct types of AoA (frequency dependent and frequency independent), the first accounted for by a connectionist-type mechanism and the latter situated at the interface between semantics and word production. Moreover, Moore, Smith-Spark, and Valentine (2004) and Holmes and Ellis (2006) have suggested that there are two loci of AoA effects: at the phonological level and somewhere within the perceptual level of representation. Again, this could account for the varying degrees of AoA effects. This study sets about testing these ideas by assessing the effect size of AoA across a series of different tasks that necessitate access to various levels of representation. Experiments 1–4 demonstrate significant effects of AoA in a novel picture–picture verification task, an object classification task, a picture verification task, and an object-naming task. Experiment 5 showed no effects of initial phoneme on the naming of the critical objects used within Experiments 1–4. The implication of the varying AoA effect sizes found within Experiments 1–4 in relation to explanations of AoA are discussed. 相似文献