Behavioral momentum in computer-presented discriminations in individuals with severe mental retardation

Behavioral momentum was examined in 2 individuals with severe mental retardation via within-subject manipulations of obtained reinforcer rates. Subjects performed self-paced discrimination problems presented on a touch screen computer monitor. Two different problems, Tasks A and B, alternated in blocks of 15 trials on a multiple schedule. Reinforcers were snack foods. The reinforcement schedule for Task A was continuous (fixed-ratio 1) and the schedule for Task B was continuous in some conditions and variable ratio in other conditions. Behavioral momentum was assessed in test sessions by prefeeding, presenting response-independent food, and making available alternatives to the tasks. When the obtained reinforcer rate for Task A was at least twice that for Task B, resistance to change was greater for Task A. When both reinforcer rates and response rates were a pproximately equal for the two tasks, resistance to change was approximately equal. These results are consistent with behavioral momentum effects. They extend previous findings with humans by examining momentum in self-initiated discrete-trial discrimination tasks with ratio schedules, and by isolating relative reinforcer rates as a controlling variable via within-subject manipulations.     

The Perceptions of Lutheran Pastors Toward Prenatal Genetic Counseling and Pastoral Care

The purpose of this study is to explore a theological perspective toward genetic counseling. A survey was sent to 207 ministers within the Evangelical Lutheran Church of America (ELCA), to determine their perspectives toward four different scenarios in a prenatal genetic counseling setting. The four different scenarios included situations involving Huntington disease, Down syndrome, trisomy 18, and anencephaly. Nearly all ELCA Lutheran pastors perceived genetic counseling as beneficial and useful and wanted to be involved in the decision-making process for whether or not to terminate the pregnancy. Their views toward termination of pregnancy varied depending on the severity of the genetic abnormality. Severity in this study was based upon life compatibility. As the severity of the genetic abnormality increased, the percentage of Lutheran pastors who viewed termination as an option increased from 23% (Down syndrome) to 62% (anencephaly). A better understanding of how spiritual leaders view genetic counseling would provide an insight into how genetics and religious beliefs together play a significant role in shaping the decisions of those faced with abnormal pregnancies.     

Antenatal Genetic Testing and the Right to Remain in Ignorance

As knowledge increases about the human genome,prenatal genetic testing will become cheaper,safer and more comprehensive. It is likelythat there will be a great deal of support formaking prenatal testing for a wide range ofgenetic disorders a routine part of antenatalcare. Such routine testing is necessarilycoercive in nature and does not involve thesame standard of consent as is required inother health care settings. This paper askswhether this level of coercion is ethicallyjustifiable in this case, or whether pregnantwomen have a right to remain in ignorance ofthe genetic make-up of the fetus they arecarrying. While information gained by genetictesting may be useful for pregnant women whenmaking decisions about their pregnancy, it doesnot prevent harm to future children. It isargued that as this kind of testing providesinformation in the interests of the pregnantwomen and not in the interests of any futurechild, the same standards of consent that arenormally required for genetic testing should berequired in this instance.     

产前超声检查的相关伦理学思考

超声检查是产前诊断的一项主要检查技术,应坚持将患者的利益放在首位的原则,并且在检查前充分告知孕妇超声检查的安全性及局限性。对知情同意、人工流产及性别鉴定等伦理问题进行了分析。医生应告知孕妇胎儿的异常情况。以便其做出决定。     

The personal myth: A re‐evaluation

This paper presents a re‐evaluation of Kris's personal myth. The notion has been used rather sparingly despite the Delphi Symposium in 1984 on the question of its clinical usefulness. After framing the notion of myth, some difficulties related to the question are identified. A clinical vignette exemplifies some of the ambiguities in its definition but stresses its clinical relevance. A discussion expands on these situations so as to propose three various aspects of personal myths to account for the two variants identified by Kris. The actualization of the underlying fantasy in the character organization is a third form and the technical aspect associated with it is reviewed from a new perspective. The family romance is revisited to reassess its role as the basis of the personal myth in the face of studies favouring an earlier development of the myth.     

THE IMPACT OF DEPRESSION ON MATERNAL RESPONSES TO INFANT FACES IN PREGNANCY

Research has suggested that prenatal depression may be associated with disrupted maternal responses to infant stimuli, with depressed pregnant women not showing the bias toward distressed infants as that observed in nondepressed pregnant women. The current study examined the effects of depression on self‐ reported responses to infant stimuli, in early pregnancy. Women with clinical depression (n = 38), and nondepressed women (n = 67) were recruited from a wider cognitive behavioral therapy trial. They completed Maternal Response Scales in which they were presented with images of distressed, neutral, and happy infant faces, with no time limit. The women rated their responses to these images along three dimensions—wanting to comfort, wanting to turn away, and feelings of anxiety—using Likert scales via a computerized task. There was evidence that women with depression in pregnancy showed different responses than did women without depression. Women with depression were substantially more likely to be in the highest quartile for ratings of wanting to turn away, odds (OR) ratio = 4.15, 95% confidence intervals (CIs) = 1.63–10.5, p = .003, and also were substantially less likely to be in the highest quartile for wanting to comfort a distressed infant face, OR = 0.22, 95% CIs = 0.09–0.54, p < .001. Findings are consistent with there being both a heightened avoidant and a reduced comforting response toward distressed infants in depressed pregnant women, providing some support that depression disrupts maternal preparations at a conscious level.     

也论朱子对《周易参同契》的整理

本文系对"朱子删改《参同契》文本说"的回应。该说法认为,朱子以宋代之后才出现的"先天方位"思想作为诠释《参同契》思想的基本方向,为弥合其注释与正文之间的矛盾,朱子有选择地删改了《参同契》的文本。本文对该说的几个主要论据做出回应:针对在朱子之前《参同契》文本不稳定的观点,本文指出,《参同契》文本在唐代已经基本稳定,而唐宋之际阐发《参同契》的文献大量出现,导致了《参同契》与之相混同的现象;针对朱子首次把《参同契》所本无的"先天方位"思想强加到对《参同契》的解释中的说法,本文指出,在朱子之前已有先例以"乾坤坎离"释《参同契》的"牝牡四卦"的说法,而《参同契》本身也是陈抟、邵雍"先天方位"说的思想来源之一;最后,本文还就"朱子删改《参同契》文本说"的具体条目做出了分析,指出其判断多有失误。