Substitutability between conditioned and primary reinforcers in discrimination acquisition.

Rats and pigeons were trained on a series of reversals of a conditional simultaneous discrimination. The percentage of reinforcement for correct trials was varied across reversals. When nonreinforced correct trials produced the same feedback as incorrect trials, the number of errors to reach an acquisition criterion was greater for smaller percentages of reinforcement, but the number of reinforcers required was either approximately constant or smaller for the smaller percentages. When a stimulus paired with food (the conditioned reinforcer) was added on nonreinforced correct trials, both measures were substantially decreased. When the same stimulus was presented, but without a history of food pairing, learning rate was similar to when no stimulus was presented on nonreinforced trials. The results provide direct evidence that conditioned reinforcers may substitute, although imperfectly, for a primary reinforcer, and that pairing with the primary reinforcer is a necessary condition for such substitutability to occur.     

Offence,offender, and victim characteristics in South Korean filicides, 1948–1962: A descriptive study

Filicide is defined as the killing of children from birth to age 18 by a natural or step-parent. The legal definition of filicide in Korea does not impose such age limits. Although families in contemporary Korea are nuclear in structure, they were multigenerational prior to the industrialisation that occurred during the second half of the twentieth century. While psychiatric and evolutionary theories have been predominantly used in the filicide literature, prior works have neglected to examine how culture shapes violence against one’s offspring. This paper explores the offence, offender, and victim characteristics in South Korean filicides (1948–1962) through a content analysis of a major newspaper (Chosun Ilbo). Results indicate that filicides occur in one-on-one contexts, primarily carried out by biological parents against their offspring while adoptive children appeared as victims due to the genealogical customs practiced in Korean society. Results indicate that more than 12% of filicide victims are adults. The implications of our findings are discussed.     

序列位置内隐学习产生机制的实验研究

内隐学习是当今认知和学习领域继内隐记忆之后又一重要的研究课题。该研究利用序列反应时研究程式,通过两个实验,对序列位置内隐学习产生的机制进行了探讨。结果表明：（１）在序列反应时任务程式中,随着反应一刺激间隔的延长,序列位置内隐学习的学习量逐渐减少;（２）异形同模式迁移组和异形异模式迁移组被试间内隐学习量无显著差异,被试未能内隐地习得抽象的序列模式。说明序列位置内隐学习产生的基础是水平联结,在该实验条件下没有发现垂直联结存在的证据。     

Cohabitation,marriage, and murder: Woman‐killing by male romantic partners

Using a national‐level US homicide database that includes more than 400,000 homicides committed from 1976‐1994, I calculated rates of uxoricide (the murder of a woman by her romantic partner) by type of relationship (cohabiting or marital), ages of the partners, and age difference between partners. Women in cohabiting relationships are about nine times more likely to be killed by their partner than are women in marital relationships. Within marital relationships, the risk of uxoricide decreases with a woman’s age. Within cohabiting relationships, in contrast, middle‐aged women are at greatest risk of uxoricide. Paralleling the uxoricide victimization rates, uxoricide perpetration rates are highest for young married men and for middle‐aged cohabiting men. Uxoricide risk generally increases with greater age difference between partners. These findings provide the first national‐level replication of uxoricide risk patterns reported for a national‐level Canadian sample. Discussion highlights future research directions, including identifying why women in cohabiting relationships incur greater risk of uxoricide than do women in marital relationships. Aggr. Behav. 27:284–291, 2001. © 2001 Wiley‐Liss, Inc.     

阅读障碍儿童的技能自动化能力

以自动化缺陷假说为理论背景,采用系列反应时学习任务,探讨了41名五、六年级的汉语发展性阅读障碍儿童和41名正常儿童的技能自动化能力,通过比较对系列刺激和随机刺激的反应时差异,发现障碍组儿童的反应时虽然普遍长于正常组,但两组儿童都表现出了相同模式的系列学习效应,不支持发展性阅读障碍的技能自动化缺陷假说.     

Distance patterns and disposal sites in rural area homicides committed in Finland

The present study examined offender characteristics, distance patterns, and the nature of disposal sites in rural area homicides. Pre‐trial investigation files of cases where victims' bodies were found in rural areas in 1994–2005 (n = 46) and forensic psychiatric examination reports of the offenders were content‐analysed. Psychopathy Check List‐Revised was used to assess psychopathy. Investigators of these homicides filled out a questionnaire on the offender's familiarity with the body disposal area, and MapInfo was used to measure offender/victim‐residence‐to‐crime‐to‐body‐disposal‐site distances. Rural area homicides more frequently involved multiple offenders who were significantly younger than offenders in other homicides. Of the victims, 73% were found in woods and 27% in water. Offenders were familiar with disposal sites in over half of the cases. The victim's gender, close relationship with the offender, and the offender's violent crime history were associated with longer homicide‐scene‐to‐body‐disposal‐site distances. The number of inhabitants and offender's violent crime history were related to longer offender‐residence‐to‐body‐disposal‐site distances. Offender's age, intelligence, or psychopathology bore no significant association with the distance patterns. The results can be applied when searching missing persons in homicide investigations and in prioritising suspects in rural area homicides. Copyright © 2008 John Wiley & Sons, Ltd.     

语言表征的神经生物学理论

神经科学家F．Pulvermüller根据Hebb的“细胞群集”学说和相关性学习原理构建的“语言表征的神经生物学理论”首次试图基于皮层功能网络来解释语音、词汇和句法在大脑皮层的表征机制,不仅能较好地描述语言活动中经典语言脑区与其它参与活动脑区的相互关系,也对语言加工的大脑功能偏侧化与整合现象作了合适的说明。本文介绍了这一理论的主要观点和研究资料,并提出了一些尚需进一步研究的问题。     

认知失调引起的系列次序错误记忆初探

本实验借鉴认知失调领域自由范式的思路,以系列次序为对象,研究了错误记忆在认知失调影响下的产生特点和机制。结果表明：（1）选择操作对被试的次序回忆产生了显著影响：Z（有选择一无选择）=11．036,p〈0．01;（2）在有选择条件下,接受项目的喜好程度增加（X^2（2）=13．000,P〈0．005）,拒绝项目的喜好程度降低（X^2（2）=9．250．P=0．001）;在无选择的条件下,三种位置的频次分布无显著差异,表明认知失调引发了次序错误记忆;（3）预警变量对于次序回忆的相关程度有显著影响（Z（有提示一无提示）=3．535,P〈0．01）,对于接受项目和拒绝项目的位置回忆无显著影响（接受项目：X^2（2）=0．629,P=0．730;拒绝项目：70（2）=0．180,P=0．914）,表明错误记忆是由认知失调引起,并且难以抑制。     

内隐学习的人工神经网络模型

近年来,人工神经网络模型常被用来模拟各种心理活动,从而为心理学的一些相关理论提供丰富的证据,内隐学习也不例外。基于权重调整来学习正确反应的人工神经网络模型和内隐学习的两大本质特征间有着极为相应的匹配,因此,人工神经网络模型特别适用于内隐学习研究。到目前为止,针对两种较为普遍的内隐学习任务,已经相应地出现了两种使用较为广泛的神经网络模型——自动联系者和简单循环网络     

从达尔文医学看肛肠病与上唇系带的相关性

本文复习了应用上唇系带龈交穴诊治痔病的文献,并应用达尔文医学理论讨论其机制。从系统发生的角度看,上唇系带与肛垫的相关性源于摄食与排泄原始口肛结构功能的统一性;从个体发生的角度来看,其相关性源于原始咽与泄殖腔在发生中的系列同源性。从达尔文医学的角度来看,上述相关性是人体原始口肛同一结构设计演化留下的痕迹,痔病在上唇系带产生反应（结节、条索等）基本上是中性的,并不严重,还没有对我们的口腔造成摄食、发音不便,故并没有在自然选择中被淘汰。刺激上唇系带龈交穴治疗痔病利用了演化留下的神经联系的痕迹。