Infantile handling and the facilitation of discrimination and reversal learning

One group of rats was removed from their home cage and received daily handling from Days 3-21, while the control group of litter mates remained in the cage and did not receive any treatment. On Day 22 all rats were weaned and they were housed in individual cages until they were 60 days old. After two pretraining days, subjects were given daily blocks of one free and three forced trials in the T-maze and were rewarded with food after making the correct response. Following 20 days of training and testing on black-white discrimination, subjects were given 10 days of reversal training with four daily trials. Results indicate that the handled animals showed faster running and a greater number of correct choices than the control rats during both the acquisition and reversal learning phases of the experiment.     

川金丝猴社会行为模式的观察研究

川金丝猴(Rhinopithecus roxellanae)是我国特有的灵长类动物。本文记述了两个人工饲养繁殖笼内雌雄成年和亚成年川金丝猴成员在社会交往中的各种行为模式。同时记述了各种行为模式发生时的社会情境和所涉及的成员,从而了解各种行为模式的社会含意。社会行为有攻击,作威,屈服,和解和友谊四大类,其中共包括17种不同模式的社会行为节目。     

Organisational Form and People Development: The Team as a Vehicle for Developing the Individual-in-Community

It is argued that all social action serves specific power interests and that the organisational form of social agencies is strongly influenced by the theoretical assumptions and practical aims of those who establish them. The paper presents the case of radical humanism, as an appropriate theory of social action within social democracies in the late-twentieth century, and argues that the team is a highly effective form of social organisation which leads to the establishment of an organisational culture compatible with radical humanist principles.     

脑外伤后患者的认知障碍

本文对83例脑外伤患者在智力、记忆、信息处理速度及语言流畅性等方面进行了研究.结果表明:脑外伤损害了患者的高级皮质功能,使其在相当长的时期内,仍遗留有智力、记忆、注意、信息处理速度及语言流畅性等方面的障碍,只是轻、重程度不等而已。从中我们选出相对比较灵敏的测验,做为今后研究脑外伤病人心理功能障碍的方法,并拟定出脑外伤病人心理功能的评定指标。     

A window for the study of prenatal sex hormone influences on postnatal development

In humans, the influence of prenatal sex hormones on the fetal brain and subsequent postnatal development has had limited study because of the apparent inaccessibility of hormone levels in normal fetuses. We propose that amniotic fluid obtained via midtrimester amniocentesis can be assayed for fetal hormone levels during the period thought to be important for sexual differentiation of the brain. Amniotic fluid samples from midgestation (N = 70) were assayed for levels of testosterone and follicle-stimulating hormone, and significant sex differences were observed (ps less than .001), with some degree of overlap between the sexes. The possibility of applying hormone levels obtained from amniotic fluid to the study of postnatal development is discussed.     

Manual discrimination and identification of length by the finger-span method

Experiments were conducted on length resolution for objects held between the thumb and fore-finger. The just noticeable difference in length measured in discrimination experiments is roughly 1 mm for reference lengths of 10 to 20 mm. It increases monotonically with reference length but violates Weber's law. Also, it decreases when the subject is permitted to maintain a constant finger span between trials; however, it tends to increase when the nondominant hand is used. As would be expected from studies of other stimulus dimensions in other sense modalities, resolution is considerably poorer in identification experiments than in discrimination experiments. For stimulus sets that cover a broad range (90 mm), the total information transfer is roughly 2 bits; for those that cover a relatively small range (18 mm), it is roughly 1 bit. The data are analyzed and interpreted using analysis techniques and models that have been used previously in studies of audition (e.g., Durlach & Braida, 1969).     

归因方式和抑郁

对生活中所发生的愉快的或不愉快的事件,人们往往做认知上的归因。就归因方式(Attributional style)来说,一个人可以从三个维度上评价某一事件,即:自身-他人的(Internal-External).持之-暂时的(Stable-Unstable),整体-局部的(Globle-Specif-ic)。例如,一位学生在研究生入学考试中失败了,他可以将这次失败看作是由于自己智