《中国大学生心理健康量表》的编制

本研究在文献研究、咨询案例分析、专家访谈和讨论、开放式问卷调查的基础上,采用实证法,编制了大学生心理健康量表,制定了全国大学生常模,并对其信度和效度进行了检验。结果表明:该量表具有良好的信度与效度,可以用于我国大学生心理健康水平的的检测。     

食管癌内镜技术最优化原则的思考

随着消化内镜及其配件的不断更新和内镜医师操作技术的进步,消化内镜在食管癌的应用从诊断为主发展到诊断与治疗并重.回顾历史,医疗需求是医学科学进步的强大动力,科学技术进步推动医学的发展,内镜技术的发展促进了食管癌诊断与治疗水平的最优化.     

青少年学生生活满意度的结构和量表编制

本研究在文献分析的基础上,结合国外已有的生活满意度量表,通过访谈、开放式问卷等方法,构建了我国青少年学生生活满意度的理论维度,并据此编制了青少年学生生活满意度量表。对量表进行探索性因素分析和验证性因素分析后表明：生活满意度是一个多层次、多维度的结构,包括2个层次和6个维度。     

120名在校孤儿影响学习的心理因素调查研究

本文研究120名在校孤儿影响其学习的儿项心理因素情况．录川问卷测验法和个案调查法,结果表明：孤儿的智力水平、心理健康水平低于同龄正常儿童,提高学习能力较差,问题行为较多,但在校学习方法、与教师关系较好。     

Directed forgetting of autobiographical memory in mild Alzheimer's disease

Using the autobiographical directed forgetting method (Barnier et al., 2007), the present paper addressed the intentional inhibitory processes of episodic and semantic autobiographical memory in Alzheimer's disease (AD). Mild AD patients and healthy elderly people were instructed to either forget or to continue remembering previously generated autobiographical events. In a later recall test they were asked to reconstruct the early-generated memories regardless of the forget/remember instruction. Autobiographical reconstruction was further distributed into episodic and semantic memories. Results showed no forget instruction effect on episodic or semantic autobiographical recall with AD patients, whereas healthy elderly people were able to inhibit only episodic autobiographical memories. The findings suggest an impairment of the intentional inhibitory processes in autobiographical memory with AD and a relative preservation of these mechanisms with normal ageing. They also demonstrate an earlier decline in the intentional inhibitory processes compared to the autobiographical deterioration in AD.     

Pre-training anandamide infusion within the basolateral amygdala impairs plus-maze discriminative avoidance task in rats

Endocannabinoids (eCBs) modulate a variety of brain functions via activation of the widely expressed CB1 receptor. One site of high density of this receptor is the basolateral amygdala (BLA), a structure involved in the formation of aversive memories. The activation and blockade of CB1 receptors by systemic or hippocampal drug administrations have been shown to modify memory processing. However, little is known about the role of the BLA endocannabinoid system in aversive memories. Additionally, BLA endocannabinoid transmission seems to be related to emotional states, but the relevance of these effects to memory formation is still unknown. In this study we investigated the effects of the eCB anandamide (AEA) and the CB1 antagonist/inverse agonist AM251 infused into the BLA on the acquisition of an aversive memory task, concomitantly evaluating basal anxiety levels in rats. Male rats received pre-training micro-injection of AEA, AM251 or vehicle bilaterally into the BLA, and were studied with the plus-maze discriminative avoidance task (a paradigm that allows concomitant and independent evaluation of anxiety-like behavior and the memory of an aversive task). Our results showed that AEA into the BLA before training prevented memory retrieval 24 h later, as evaluated by exploration of the aversive arm of the maze, while AM251 into the BLA did not interfere with animals' performance. In addition, AEA had no effect on anxiety-like behavior (as evaluated by open arm exploration and risk assessment), while AM251 induced an anxiogenic effect. Our data indicate an important role of BLA CB1 receptors in aversive memory formation, and suggest that this involvement is not necessarily related to a possible modulation of anxiety states.     

Insufficient augmentation of ambient GABA responsible for age-related cognitive deficit

Age-related degeneration of intracortical inhibition could underlie declines in cognitive function during senescence. Based on a hypothesis that a decrease in basal concentration of ambient (extrasynaptic) GABA with aging leads to depressing intracortical inhibition, we investigated how the basal concentration affects stimulus-evoked activity (as signal), ongoing-spontaneous activity (as noise) of neurons and their (signal-to-noise) ratio S/N. We simulated a neural network model equipped with a GABA transport system that regulates ambient GABA concentration in a neuronal activity-dependent manner. An increase in basal concentration augmented ambient GABA, increased GABA-mediated inhibitory current, and depressed ongoing-spontaneous activity while still keeping stimulus-evoked activity. This led to S/N improvement, for which it was necessary for the reversal potential of GABA transporter to be close to the resting potential of neurons. Above the resting potential, ongoing-spontaneous activity was predominantly enhanced due to excessive GABA-uptake from the extracellular space by transporters. Below the resting potential, stimulus-evoked activity was predominantly depressed, caused by excessive GABA-release. We suggest that the insufficient augmentation of ambient GABA due to a decrease in its basal concentration may be one of the possible causes of cognitive deficit with aging, increasing ongoing-spontaneous neuronal activity as noise. GABA transporter may contribute to improving S/N, provided that its reversal potential is close to the resting potential.     

The use of virtual reality for episodic memory assessment: effects of active navigation

Episodic memory was assessed using Virtual Reality (VR). Forty-four (44) subjects visualized a target virtual apartment containing specific objects in each room. Then they visualized a second virtual apartment comprised of specific objects and objects shared by the two apartments. Subjects navigated in the virtual apartments in one of the following two conditions: active and passive. Four main episodic memory components were scored from the VR exposures: (1) learning effect; (2) active forgetting effect; (3) strategies at encoding and at retrieval; and (4) false recognitions (FRs). The effect of navigation mode (active vs. passive) on each memory component was examined. Active subjects had better learning and retrieval (recognition hits) performances compared to passive subjects. A beneficial effect of active navigation was also observed on the source-based FR rates. Active subjects made fewer source-based FRs compared to passive subjects. These overall results for the effect of active navigation are discussed in terms of the distinction between item-specific and relational processing.     

经验回顾评价中峰-终定律的检验

通过两个实验对经验回顾评价的峰终定律进行检验。实验1借鉴Fredrickson和Kahneman(1993)的实验范式,选取积极和消极视频各6个,要求40名中国大学生边看边评价,看完后给出回顾评价。实验2采用现场研究的方法,要求72名大学生,在黄金周假期中每天晚上评价当天的快乐程度,并分别在假期刚结束后,结束后三周和七周三个时间水平上回顾整个黄金周的快乐程度。结论:短时间内经验回顾评价符合峰-终定律,而长时间内经验回顾评价不符合峰-终定律。     

大学生考试作弊问题的研究现状

近年来在大学生中,考试作弊这种不良现象日益普遍,需要高校教务工作者与心理教育工作者高度重视。因此,本文试图通过分析中外大学生考试作弊的研究现状,了解大学生考试作弊心理现状和应对措施,为有效地遏制高校学生考试作弊,促进高校的教学改革和人才培养模式改革提供一些理论依据。