EFFECTS OF DRUGS AND DRUG COMBINATIONS IN PIGEONS TRAINED TO DISCRIMINAT AMONG PENTOBARBITAL,DIZOCILPINE, A COMBINATION OF THESE DRUGS,AND SALIN

Drugs with multiple actions can have complex discriminative‐stimulus properties. An approach to studying such drugs is to train subjects to discriminate among drug combinations and individual drugs in the combination so that all of the complex discriminative stimuli are present during training. In the current experiments, a four‐choice procedure was used to train pigeons to discriminate among dizocilpine (noncompetitive NMDA receptor blocker), pentobarbital (GABA_A receptor agonist), a fixed‐dose combination of these two drugs, and saline. Following extended training, low doses of pentobarbital or dizocilpine administered alone produced saline‐appropriate responding. Higher doses of pentobarbital produced responding on the pentobarbital‐appropriate key and higher doses of dizocilpine produced responding on the dizocilpine key. Administering the lowest doses of pentobarbital and dizocilpine together resulted in responding on the saline‐appropriate key. Increasing the dose of pentobarbital in the presence of low doses of dizocilpine produced responding primarily on the pentobarbital‐appropriate key; increasing the dose of dizocilpine in the presence of the lowest dose of pentobarbital produced responding primarily on the dizocilpine‐appropriate key. Combining the higher doses of pentobarbital and dizocilpine resulted in responding primarily on the drug‐combination key. Low doses of phencyclidine or ethanol produced responding on the saline‐appropriate key, but intermediate doses resulted in individual subjects responding predominately on either the pentobarbital key, the dizocilpine key, or the drug‐combination key depending on the subject. After the highest dose of phencyclidine or ethanol, most subjects responded predominantly on the drug‐combination key. Low doses of other drugs tested produced responding on the saline‐appropriate key. With the highest diazepam doses responding was largely confined to the pentobarbital‐appropriate key. The highest doses of dextromethorphan or dextrorphan resulted in responding on the dizocilpine key more frequently than on other keys. Across a range of doses, morphine produced responding predominantly on the saline key. The results using the four‐key procedure emphasized the role of both GABA_A and NMDA receptors in the complex discriminative stimulus properties of phencyclidine and of ethanol.     

论孟子的“四维”人格理论及贫困生的人格自我培植与修复

从孟子的“四维”人格理论出发,分析贫困生人格的负性特征,探寻人格建构途径,试图为贫困生的人格培植与修复提供一条内在心性路向的人格建构路径。     

三到六年级汉语儿童英语拼写发展及其与正字法规则意识的关系

本研究对167名三到六年级的汉语儿童进行了英语拼写测验和英语正字法规则意识测验,结果发现:(1)汉语儿童在整个小学时期的英语拼写能力都基本处于字母名称拼写策略阶段,在四年级到五年级期间,其整体拼写水平有较显著提高;(2)汉语小学儿童的英语拼写水平与其正字法规则意识显著相关,四、五、六年级儿童的英语字母可双写位置规则对其英语拼写能力具有显著预测作用。     

Partially testing a process model for understanding victim responses to an anticipated worksite closure

This study partially tested a recent process model for understanding victim responses to worksite/function closure (W/FC) proposed by Blau [Blau, G. (2006). A process model for understanding victim responses to worksite/function closure. Human Resource Management Review, 16, 12-28], in a pharmaceutical manufacturing site. Central to the model are the Kubler-Ross [Kubler-Ross, E. (1969). On death and dying. New York: Macmillan] grieving stages, which have not been formally measured and applied to downsizing research. Following Blau (2006), individual grieving stages were successfully measured and clustered into more general grieving categories, i.e., negative (denial, anger, bargaining depression) and positive (exploration, acceptance). Across four waves of data 53 respondents constituted the complete data sample. The Time 1 personal factors had minimal impact on any type of response. However, Time 1 situational factors did have an impact, paced by higher perceived contract violation leading to greater strain, work incivility, organizational deviance, and intent to sue employer, and lower transactional obligations and employer endorsement. Earlier Time 2 grieving stages were used as individual antecedents in regression analyses to explain Time 3 (N = 77) victim responses (general strain, work incivility, interpersonal deviance, organizational deviance, transactional obligations, relational obligations) and also Time 4 (N = 53) prior to closure responses (intent to sue employer, employer endorsement). Within negative grieving, results indicated that greater anger was the most influential grieving stage, since it led to greater strain, work incivility, organizational deviance, and intent to sue, as well as lower transactional obligations and lower endorsement. Within positive grieving acceptance was the most influential, since it led to lower strain, lower work incivility, lower organizational deviance, and lower intent to sue. Study limitations and future research issues are discussed.     

Comparing detailed and less detailed pre-lineup instructions

It is generally agreed that proper pre-lineup instructions can reduce the rate of mistaken identifications of innocent suspects. However, the exact nature of these instructions has not been empirically established. We compared the effects of the detailed pre-lineup instructions recommended by the US Department of Justice to a simple instruction that the perpetrator may or may not be present. Both forms of unbiased instructions significantly reduced mistaken identifications when compared with biased instructions. Comparison of performance using the utility-based analysis deviation from perfect performance demonstrated that unbiased instructions are to be preferred under assumptions of low base rates or high costs of mistaken identifications and do as well as biased instructions under assumptions of high base rates or low cost of misidentification.     

Social cognition models and health behaviour: A structured review

Abstract

A number of social cognition models have been developed to account for socio-demographic variations in health behaviour. This paper distinguishes between: (a) motivational, (b) behavioural enaction, and (c) multi-stage models of health behaviour. The models are evaluated in terms of advancement of existing knowledge and - where appropriate - predictive utility. Common themes that appear within- and between- these categories are discussed, with consideration of ways in which theory may be advanced by future research. Each approach has associated strengths and weaknesses, suggesting that a “consensus” approach to the study of health behaviour may prove fruitful. Identification of the key constructs across different model types would allow coherent integration and promote further understanding of the psycho-social determinants of health behaviour.     

Body Psychotherapy with Couples

SUMMARY

Bodynamic Analysis combines depth cognitive psychotherapy and an emphasis on relationship with an understanding of the body based on an empirical study of the psychological function of each muscle. The resulting developmental understanding has been elaborated in the form of Seven Developmental Stages, each having specific themes and issues. These themes and issues are often found to be at the core of the conflictual dynamics presented by couples who are seeking therapy. Thus, while addressing the issues of one person, we can simultaneously be eliciting and working with the interpersonal dynamics of the couple.     

Tool use by chimpanzees (Pan troglodytes) of the Arnhem Zoo community

Abstract: Chimpanzees have a large repertoire of tool-use behaviors. This study reports on the variety and the extent of tool use exhibited by the chimpanzees of the Arnhem Zoo community in The Netherlands, living in an enriched captive setting since 1971. The use of tools by 29 chimpanzees aged from 0 to 37 years was observed. We identified 13 types of tool use comparable to those found in the wild. Some of these types of tool use seem to be specific to this community, and can be explained by the ecological characteristics of this captive setting. Chimpanzees started to use tools from the age of 2 years. Young chimpanzees, from 5 to 9 years old, showed a greater repertoire of tool use than infants and adults. All types of tool use in the community have appeared by the age of 10, the age of puberty for chimpanzees. Multivariate analysis was applied for the 29 individuals by 13 types of tool use in a one-zero matrix. The results show two major categories of tool use, one in a practical or substantial context and the other in a nonpractical or play context. The subjects clustered into groups reflecting developmental stages, although there are great individual differences. In conclusion, this captive community provides a unique opportunity to clarify the details of tool use by chimpanzees.     

Generation Identity and the Reminiscence Bump: Memory for Public and Private Events

Participants ranging in age from 30 to 70 years free-recalled when they had learned public and private items of news. When responses were plotted in terms of age of participant at time of encoding, it was found that peak recall for public items of news was in the period when participants were aged 10 to 19 years whereas peak recall of private items of news occurred in the period when participants were aged 20 to 29 years. A second study confirmed this pattern of an early reminiscence bump for public news. It is proposed that these two components of the reminiscence bump reflect, respectively, a period of formation of generation identity in the second decade of life and a period of formation of intimate relationships in the third decade.