Chinese deaf adolescents' free recall of taxonomic, slot-filler, and thematic categories

Four experiments were conducted to show that deaf adolescents tended to process information in different ways from hearing adolescents. Memorizing items sequentially shown on computer screens under the control of their articulators' movements, deaf adolescents tended to treat items that cohered as taxonomic, thematic, or slot-filler categories as isolated pieces of information. Having to perceive information by means of sign language, however, their achievements were not worse than those of hearing adolescents anymore, no matter whether the stimuli were presented as words or pictures. They could not only utilize categories relations to help memorize categories exemplars but were relatively better aware of slot-filler or thematic than taxonomic relations as well, suggesting that they had a relatively delayed development of taxonomic category representations in comparison with hearing adolescents.     

Being liked is more than having a good personality: The role of matching

Is possession of desirable personality characteristics the only predictor that someone will be well-liked in a group of acquaintances, or does similarity to others in the group also matter? We tested participants (n = 844) who had been assigned to peer groups and had spent 6 weeks together. Participants assessed self and peer personalities. We found that after controlling for attributions of desirable and undesirable personality characteristics, individuals with similar personality patterns liked each other more than individuals with dissimilar patterns. Further analysis revealed similarity of basic demographic attributes (i.e., sex and race) predicted liking independent of personality similarity. Results provide a comprehensive analysis of relations between personality similarity and liking among acquaintances in a randomized, naturalistic design.     

Goal agreement and relationship quality among college students and their parents

Two hundred eight parent–college student dyads (total N = 416) participated in the current study, which examined the link between goal agreement and perceived conflict within their relationships. Undergraduate participants (91 male, 117 female) completed a demographic form, a 65 items goal measure, and a measure of parental conflict. Parents (98 fathers, 110 mothers) were asked to rate the importance of the same 65 goals for their emerging adult children. College students tended to place more importance on independence, affect control, health, social relationships, and financial concern goals than their parents did, whereas parents placed more importance on moral and religious goals than their emerging adult children did. However, relative goal agreement between parents and college students was found to be moderately high. Those parent–college student dyads who experienced less conflict tended to have higher goal agreement, whereas those dyads with a higher level of conflict had lower goal agreement. These findings provide further evidence for the link between interpersonal relationships and the personality construct of goals.     

多目标追踪任务中不同运动方式非目标的抑制机制

采用多目标追踪范式结合点探测技术的方法, 考察视觉系统对不同运动方式(静止和规则运动)非目标的抑制机制。实验一将部分非目标设置为静止, 考察静止非目标的抑制机制; 实验二将部分非目标设置为规则运动, 以提高任务难度, 考察规则运动非目标的抑制机制。结果发现: (1) 实验一中静止非目标受到抑制, 抑制量与运动非目标没有差异; (2) 实验二中规则运动非目标受到抑制, 抑制量显著小于随机运动非目标; (3)综合两实验发现, 随着任务难度的提高, 只有随机运动非目标的抑制量显著增加, 而静止非目标与规则运动非目标的抑制量差异不显著。最后, 就视觉系统对不同运动方式非目标的抑制机制进行了讨论。     

真实型领导对员工工作投入影响的多重中介效应模型

为了考察真实型领导影响员工工作投入的内在作用机制,采用真实型领导行为量表、职业认同量表、情感承诺量表、组织支持感量表和工作投入量表对308名企业员工进行施测,结果发现：（1）真实型领导通过职业认同、情感承诺和组织支持感的间接作用对员工的工作投入产生影响;（2）职业认同、情感承诺和组织支持感在真实型领导影响员工工作投入的过程中起完全中介作用。     

Assessment of 'subcortical dementia' in patients with Huntington's disease, Parkinson's disease, multiple sclerosis and AIDS by a neuropsychological screening battery

Four diagnostic groups categorized as 'subcortical dementia' were studied using a neuropsychological screening battery. The specificity of the battery in disclosing characteristic patterns of impairment in subgroups within the category, and the correspondence between natural subgroups generated by an unsupervised statistical classification technique and the diagnostic labels were investigated. All cognitive affected subgroups demonstrated impairment on tests of sensomotor function, congnitive efficiency and/or memory, and were characterized in terms of severity of impairment as well as a progressive involvement of functional areas. The diagnostic groups were not evenly represented in all natural subgroups. Affected AIDS-patients seemed to resemble patients with Huntington's disease more than the other diagnostic groups. The screening battery could give a general characterization of the pattern of 'subcortical dementia' and different levels of impairment, but more specific process-oriented tasks are needed to contrast diagnostic groups within the concept of 'subcortical dementia'.     

Cracks in a postdisaster service delivery network

Poor linkage cracks are defined and identified empirically in a postdisaster service delivery network. These cracks exist when essential services are provided only by isolated or peripheral clusters of organizations. Network analysis is used to identify the isolated and peripheral clusters of organizations. Measures of experience in responding to disasters and service capacity are used to identify the organizations whose services are essential in the network. Cracks prevent the network from responding effectively in the aftermath of a disaster. Suggestions are made for using network analysis to identify cracks and to improve planning and coordination in all kinds of service networks. Collection of the data for this work was supported by the National Science Foundation (NSF), Societal Response to Earthquake Hazards Mitigation Program, Grant No. CEE-8314421. The analysis and writing were accomplised with support from the National Science Foundation, Grant No. BCS-8920472. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the National Science Foundation. An early version of this paper was presented at the annual meetings of the Midwest Sociological Society, Des Moines, Iowa, April 1991. This paper was distinctly improved through our response to extensive and perceptive suggestions given by the editor and reviewers of theAmerican Journal of Community Psychology. We thank them for the help.     

Effects of mesolimbic dopamine depletion on responding maintained by cocaine and food.

The hypothesis that mesolimbic dopamine is selectively involved in cocaine reinforcement was investigated in the rat. Animals were trained under a multiple schedule in which responding was reinforced by intravenous cocaine (0.75 mg/kg/injection) or food (45-mg pellets) under fixed-ratio 15 schedule requirements in alternate 30-min components of a 2-hr daily session. Infusion of the catecholaminergic neurotoxin 6-hydroxydopamine, but not the vehicle solution, into the region of the nucleus accumbens and olfactory tubercle produced selective reductions in cocaine self-administration without significantly altering responding maintained by food within the same sessions. This effect was reproduced in intact animals by substituting saline for cocaine in the self-administration component. These results support the hypothesis that the reinforcing effects of cocaine are dependent upon mesolimbic dopamine and demonstrate that cocaine self-administration can be disrupted in animals without altering behavior maintained by a nondrug reinforcer.     

不同刺激强度训练后一日龄小鸡的记忆形成

一日龄小鸡,分别接受不同浓度的回避性刺激物邻氨基苯甲酸甲酯（ＭｅＡ）训练,间隔一定时间后测试记忆保持。主要结果为：５％和２０％ＭｅＡ训练,分别使动物记忆保持１５分钟和５０分钟左右,相当于记忆形成多阶段模型中的ＳＴＭ和ＩＴＭ阶段。４０％ＭｅＡ训练,记忆保持到训练后８－１０小时,相当于不依赖新糖蛋白合成的ＬＴＭ形成的早期阶段。只有６０％以上浓度的ＭｅＡ训练才使记忆保持至少２４小时。上述结果提示,利用弱化训练的方法,不仅可以将ＳＴＭ,ＩＴＭ和ＬＴＭ分离开,而且可把ＬＴＭ形成的早期阶段分离出来独立研究,增加了对ＬＴＭ新的理解,为进一步探讨记忆形成机制提供了一条新的途径。