氯丙嗪对猕猴脑电图的影响

本文研究了正常猕猴脑电图特征,将16只动物按其年龄分为哺乳期、未成年期和成年期3组。并对其中12只动物进一步观察氯丙嗪对脑电图的影响,其主要结果如下: 猕猴脑电图自发电位频率随年龄的增长而增加;振幅随年龄的增长而降低。对光刺激所呈现的“节律同化”现象,在未成年期最明显,成年期次之。 氯丙嗪能引起猕猴不同程度的脑电图变化,主要表现为全皮层高振幅慢波。氯丙嗪能改善对光脉冲刺激所呈现的“节律同化”现象。     

儿童对客体运动速度的认知发展——5—11岁儿童比较匀速直线运动光点速度的实验

本研究的目的是继续探讨不同年龄儿童对运动速度认知发展的水平和特点。被试为5—11岁儿童共205人,每组28—30人。采用个别实验。主试改用仪器显示在三种不同条件下的两个光点的等速匀速运动。令儿童比较它们的运动速度。每做完一个项目后不管儿童回答是否正确都要求他们说明理由。 实验结果表明:1)本实验条件下儿童对光点运动速度的认知同对玩具小汽车速度的认知有大体相同的发展趋势和年龄阶段的特点。2)本实验中儿童对光点速度的认知在以下几方面有别于对玩具小汽车运动速度的认知:a.从8岁起儿童依据两个光点之间的距离判断速度的人次随年龄增加。b.当儿童不能整合时、空因素时,空间因素的优势作用有减弱的趋势。3)较大儿童能采取各种策略主动解决问题。     

5—13岁儿童空间认知发展的研究——判别相等面积的再探

本实验是《5—11岁儿童两种空间关系认知发展的实验研究》的继续,但将内部被占面积改为圆形。结果表明:儿童判别面积从直觉判断发展到推理判断之间经历一种过渡形态。表现为,在同一判别中直觉和推理活动交错;能将被占面积各部分整合成整体,但对剩余面积部分的判别受直觉因素束缚;理解等量减等量所余相等原理,但不能用来解决面临的课题等四种形式。完成这种过渡需要解决三个相互联系的问题。也再次证明儿童判别面积这种空间认知发展,在一定年龄范围存在着阶段性特点,同时儿童这种认知能力的显露程度又以课题条件难易为转移。     

八至十五岁儿童交集概念和解交集数学题能力的发展研究——儿童认知结构发展变化的研究之一

本文探讨了8—15岁儿童掌握交集概念的发展水平及解答交集应用题的过程,分析了儿童认知过程中各认知成分的交互作用。 实验结果表明:小学儿童已具有掌握简单交集概念的心理基础;对交集的认知包括概念、表象、感知操作等成分的交互作用,其中表象、感知操作成分具有重要意义;儿童解交集课题是一种主动积极的认知活动,他们主动思考,采取策略,通过实物和图片的帮助而上升到概念水平上的理解。     

Perceptual deprivation,extraversion—introversion and the autokinetic phenomenon

The present study examines the relationships between perceptual-deprivation tolerance and three variables: extraversion, the autokinetic (AK) phenomenon and field-dependence. In addition, the relationship between extraversion and autokinesis (AK) was investigated. Thirty-three male subjects were subjected to 3 hr of perceptual deprivation and, in addition, their scores on each of the three independent variables were obtained. It was found, as hypothesized, that perceptual-deprivation tolerance was negatively related to extraversion and positively related to the intensity of the AK effect. Field-dependence was not related to perceptual-deprivation tolerance. The correlation between extraversion and the autokinetic effect was significant but moderate. The nature of the relationship between these two variables is discussed.     

The relationship between the probability assessor and the outcomes of an event as a determiner of subjective probability

Two experiments were conducted in which 58 subjects assessed the probability of occurrence of positive and negative events. Two types of probabilities were assessed. The first was the probability that an event would occur, influencing the assessor him/herself (SPE). The second was the probability that the same event would occur to someone else, not influencing the assessor (SNPE). Six patterns of assessments were observed. Most of the subjects assessed SPE to be higher than SNPE for positive events and SNPE to be higher than SPE for negative events. In the first experiment SNPE was assessed in regard to someone very close and similar to the assessor while in the second experiment SNPE was assessed in regard to a less-defined “else”. In the latter case the differences between SPE and SNPE were more prominent than in the first. The explanation was given in terms of motivational factors and the availability heuristic.     

灵长动物初级抽象概括能力的比较实验研究(Ⅰ)金丝猴对实物、照片和画片的概括

本实验的目的是研究金丝猴对于从三维客体到其二维的照片及图片的概括能力。实验在三只未成年金丝猴身上进行。在基础训练中,训练动物辨别墨水瓶模型和小房子模型。然后用它们的照片和图画进行测验。实验表明三只金丝猴都不能把对客体的辨别迁移到照片和图画上去。     

4-6岁儿童认知发展过程中直接认知成分与间接认知成分相互关系的研究

本实验是分析学前儿童认知过程中三种不同的条件(实物、照片、语言指示)对儿童计数、操作和比较活动的影响,探讨认知的各直接成分和各间接成分的关系在儿童认知发展中的作用;并了解3—6岁儿童在三种认知活动中的特点。     

豚尾猴(Macaca nemestrina)等灵长类动物反转学习的比较研究

不同种类猿猴脑高级机能的比较生理心理研究的资料很少,并且意见不完全一致。和(1997)曾报道黑猩猩较阿拉伯狒有较大的推断能力。Shell和Riopelle(1958)报道阔鼻猴蜘蛛猴(Ateles geoffroyi),卷尾猴(Cebus albifrons)     

睡眠剥夺时大鼠电休克阈值的变化

我们在研究睡眠剥夺影响大鼠记忆巩固的实验中,观察到睡眠剥夺引起大鼠条件反射的反应时(R T_(CR))明显缩短。我们认为,这可能反映了动物在睡眠剥夺后脑的兴奋性有所升高,本实验用电休克阈值作指标验证这一看法。