The effect of punishment on free-operant choice behavior in humans

During Phase I, three female human subjects pressed a button for monetary reinforcement in five variable-interval schedules specifying different frequencies of reinforcement. On alternate days, responding was also punished (by subtracting money) according to a variable-ratio 34 schedule. In the absence of punishment, response rates conformed to Herrnstein's equation for single variable-interval schedules. Punishment suppressed responding at all frequencies of reinforcement. This was reflected in a change in the values of both constants in Herrnstein's equation: the value of the theoretical maximum response-rate parameter was reduced, and the parameter describing the reinforcement frequency corresponding to the half-maximal response rate was elevated. During Phase II, the same five schedules (A) were in operation (without punishment), but in addition, a concurrent variable-interval schedule (B) of standard reinforcement frequency was introduced. On alternate days, responding in Component B was punished according to a variable-ratio 34 schedule. In the absence of punishment, absolute response rates conformed to equations proposed by Herrnstein to describe performance in concurrent schedules; the ratios of the response rates in the two components and the ratios of the times spent in the two components conformed to the Matching Law. When responding in Component B was punished, response rates in Component B were reduced and those in Component A were elevated, these changes being reflected in distortions of the matching relationship.     

The symmetrical law of effect and the matching relation in choice behavior

In a concurrent-chains procedure, pigeons chose between outcomes that differed in the rate of response-independent delivery of food and electric shocks. The application of functional measurement techniques confirmed the matching relation—between choice and rate of reinforcement value—for two of three pigeons. Scale values of the outcomes were extracted for the two birds that conformed to matching, and the value of a single occurrence of shock per minute—in terms of negative food units—was estimated. A second experiment with concurrent chains provided a test of these parameter estimates. The close correspondence between predicted and obtained choice behavior found in Experiment II indicated that the estimates of outcome value were indeed reliable. Both experiments together support the contention that the effects on choice behavior of positive and aversive stimuli appear to be equal, though opposite in sign.     

专业人员价值取向的现状研究

对8省市的428位专业人员所进行的价值取向研究表明,我国专业人员的价值取向总体倾向是积极向上,与社会期待相符合的,重视社会责任、工作、公众利益、法律规范、感情和家庭的价值;性别、文化程度和年龄等人口统计学因素显著影响专业人员的价值取向的个别侧面,但收入水平、婚姻状况和家庭结构的作用不显著。     

人类行为的刺激-心理活动-反应的数学公式

在一些简单情况下 ,人可由对刺激的主观体验和简单的心理加工 ,作出决定并产生反应。在假设简单心理加工的幂定律后 ,可以用一组数学公式 ,即文中的式 ( 1 ) ,( 2 ) ,( 3 ) ,( 4) ,来定量描述人类行为的刺激—心理活动—反应关系。     

INTERRELIGIOUS DIALOGUE AS AN EVOLUTIONARY PROCESS

Abstract. I explore the contributions of Ibrahim Moosa, a Muslim legal scholar, to a Muslim‐Christian dialogue on religion and science. Moosa begins from the context of Shari'a, Islamic law, and not from the usual issues of the religion‐science dialogue. Beginning as it does from a legal tradition, the approach suggests a perspective on science and religion that is particular to Islam and provides insight into how an authentic dialogue between Muslims and Christians would proceed—and thereby an alternative model for a religion‐science dialogue.     

正义王国的理想--柏拉图政治哲学评析

柏拉图以思辨哲学为主的思想体系中包含着丰富的实践哲学,以正义为核心的政治哲学便是其集中表现。柏拉图所设计的理想的城邦国家是以“贤人政制”作为标准模式的。这种政制以理念论为指导思想,以正义为根本原则,以智慧、勇敢、节制为伦理基础,以善为最高目的;实施这种政制的社会是以奴隶制为基础的严格的等级制、等级分工的社会,通过特制的教育制度培养一批身心健全、德才兼备、有知识有政治智慧的贤能的统治者、“哲学王”,由他们来执掌政权,在统治者集团内部实行财产公有,妇女和子女共有,男女平等,防止统治者腐败变质,以确保这种政制世代相传。     

关于知情同意的伦理与法律意义之辨析

尊重和自主是知情同意的伦理底线,行善是知情同意的伦理基础。知情同意并不是评判医疗行为是否符合伦理的金标准。伦理上的知情同意与法律上的知情同意,既有区别又相互联系,德法并济是有效履行知情同意的前提。     

Believing in Miracles

Classical Christian definitions of miracle speak of events transcending the natural powers of objects. A personal creator, I argue, might well cause such events in order to achieve a supernatural purpose—bringing creatures to eternal life. Miracles—events transcending natural powers, disclosing and realizing the divine purpose—would then be integral to the rational order of nature. David Hume' arguments against believing reports of miracles are shown to be very weak. Laws of nature, I suggest, are best seen not as exceptionless rules but as context–dependent realizations of natural powers. In that context miracles transcend the natural order not as "violations" but as intelligible realizations of a divine supernatural purpose. Miracles are not parts of scientific theory but can be parts of a web of rational belief fully consistent with science.     

Psychologists' perceptions of legal and ethical requirements for breaching confidentiality

This paper outlines the legal and ethical duties of psychologists in relation to preserving as well as breaching confidentiality in therapeutic relationships. It analyses the results of a questionnaire examining psychologists’ perceptions of the legal and ethical constraints on confidentiality and their likelihood of breaching confidentiality in different situations. The vast majority of participants indicated that the law permits them to disclose confidential information and that there is an ethical duty to disclose information to a third party when the patient is perceived to be dangerous. The results suggest that there is some uncertainty as to when confidentiality should be breached in practice and it is argued that the law is overly complex in this area and that guidelines are needed to assist psychologists in their clinical practice.