Stimulus and reinforcer relativity in multiple schedules: Local and dimensional effects on sensitivity to reinforcement

Pigeons' responses in two successive components of multiple schedules were reinforced according to variable-interval schedules of reinforcement that varied over five different conditions. Within each session of all conditions, line orientations of 0°, 30°, or 45° in Component 1 alternated with orientations of 45°, 60°, or 90° in Component 2. Response rates were recorded in three successive subintervals of each component. Ratios were taken between the response rate in each Component 1 line orientation and the response rate in each Component 2 orientation. These ratios were found to be power functions of the corresponding ratios of obtained reinforcement rates. Sensitivity of response ratios to changes in reinforcer ratios, given by the value of the exponent of the power function, increased systematically with increasing disparity between the dimensional values of orientation stimuli. In addition, sensitivity decreased systematically over successive subintervals of components, that is, with increasing time since component alternation. Dimensional and local (subinterval) effects interacted in that sensitivity increased with stimulus disparity to a far greater extent in the first subinterval than later in components. The data could be described by a combination of rectangular hyperbolae which attributed the interaction between local and dimensional effects to limits set by local effects on the extent that stimulus differences could affect sensitivity.     

Confirmation of linear system theory prediction: Changes in Herrnstein's k as a function of changes in reinforcer magnitude

Eight human subjects pressed a lever on a range of variable-interval schedules for 0.25¢ to 35.0¢ per reinforcement. Herrnstein's hyperbola described seven of the eight subjects' response-rate data well. For all subjects, the y-asymptote of the hyperbola increased with increasing reinforcer magnitude and its reciprocal was a linear function of the reciprocal of reinforcer magnitude. These results confirm predictions made by linear system theory; they contradict formal properties of Herrnstein's account and of six other mathematical accounts of single-alternative responding.     

Applying the law therapeutically

Therapeutic jurisprudence is the study of the law as a therapeutic agent. Although much of therapeutic jurisprudence focuses on possible changes to the law, one important interdisciplinary dimension of the endeavor involves the therapeutic application of existing law. Examples are provided of therapeutic application of existing law, and this exercise is proposed as a promising path for applied psychology.     

论齐法家思想中国际法萌芽

春秋战国时期是第一个大变局时期。在政治格局上,亲缘政治开始瓦解而地缘政治开始兴起。诸侯国兴起,春秋的历史基本上都是围绕着“争霸”这个主题展开的:制度改革、学术争鸣以及兼并战争。齐法家在春秋时期通过一系列主张帮助齐国在争霸中强大起来。笔者认为,其主张中已经包含接近现代国际法的国际法理念。齐法家思想中的国际法要素主要体现在齐国主持的历次会盟的盟约,以及齐法家的代表人物的外交活动中所遵循的原则中,本文着重从这两个方面展开论述。     

Common Law Approaches to the Relationship Between Law and Morality

How are general relations of law and morality typically conceived in an environment of Anglo-saxon common law? This paper considers some classical common law methods and traditions as these have confronted and been overlaid with modern ideas of legal positivism. While classical common law treated a community and its morality as the cultural foundation of law, legal positivism's analytical separation of law and morals, allied with liberal approaches to legal regulation, have made the relationship of legal and moral principles more complex and contested. Using ideas from Durkheim's and Weber's sociology, I argue that the traditional common law emphasis on an inductive, empirical treatment of moral practices has continuing merit, but in contemporary conditions the vague idea of community embedded in classical common law thought must be replaced with a much more precise conceptualisation of coexisting communities, whose moral bonds are diverse and require a corresponding diversity of forms of legal recognition or protection.     

The International Significance of Human Rights

A comparative examination of four alternative ways of understandingwhat human rights are supports an institutional understanding assuggested by Article 28 of the Universal Declaration: Human rightsare weighty moral claims on any coercively imposed institutionalorder, national or international (as Article 28 confirms). Any suchorder must afford the persons on whom it is imposed secure accessto the objects of their human rights. This understanding of humanrights is broadly sharable across cultures and narrows the philosophical and practical differences between the friends ofcivil and political and the champions of social, economic, andcultural human rights. When applied to the global institutionalorder, it provides a new argument for conceiving human rights asuniversal – and a new basis for criticizing this order as tooencouraging of oppression, corruption, and poverty in the developing countries: We have a negative duty not to cooperatein the imposition of this global order if feasible reforms ofit would significantly improve the realization of human rights.     

Civil Ethics and the Validity of Law

This paper aims to clarify the nature and contents of 'civil ethics' and the source of the binding force of its obligations. This ethics should provide the criteria for evaluating the moral validity of social, legal and morally valid law. The article starts with observing that in morally pluralist Western societies civil ethics already exists, and has gradually started to play the role of guiding the law. It is argued that civil ethics should not be conceived as 'civic morals' which is in fact rather 'state ethics', nor as 'public ethics' which is said to reach its perfection when it becomes law, nor as ethics applicable primarily to the basic structure of a society (political liberalism), but instead as a citizens' ethics. Subsequently the paper attempts to show what the contents of this ethics are, and which ethical theory would be able to ground its obligations.     

Scientia Iuris - An Unsolved Philosophical Problem

Legal dogmatics in Continental European law (scientia iuris, Rechtswissenschaft) consists of professional legal writings whose task is to systematize and interpret valid law. Legal dogmatics pursues knowledge of the existing law, yet in many cases it leads to a change of the law. Among general theories of legal dogmatics, one may mention the theories of negligence, intent, adequate causation and ownership. The theories produce principles and they also produce defeasible rules. By means of production of general and defeasible theories, legal dogmatics aims at obtaining a system of law that is both internally coherent and harmonized with its background in morality and (political) philosophy. Legal dogmatics is necessary in the context of constitutional constraints on the majority rule. Only if the courts act on the basis of Reason they can be a legitimate counterpart of the majority rule. And Reason cannot be exhausted by particular decision making. It also needs a more abstract deliberation, given by expert jurists. However, legal dogmatics has been a target of several kinds of criticism: empirical, morally-political, epistemological, logical, and ontological. The position taken in this article is to answer such criticism by mutually adjusting philosophy and the practices of the law.     

Resurgence as Choice in Context: Treatment duration and on/off alternative reinforcement

Resurgence as Choice (RaC) is a quantitative theory suggesting that an increase in an extinguished target behavior with subsequent extinction of an alternative behavior (i.e., resurgence) is governed by the same processes as choice more generally. We present data from an experiment with rats examining a range of treatment durations with alternative reinforcement plus extinction and demonstrate that increases in treatment duration produce small but reliable decreases in resurgence. Although RaC predicted the relation between target responding and treatment duration, the model failed in other respects. First, contrary to predictions, the present experiment also replicated previous findings that exposure to cycling on/off alternative reinforcement reduces resurgence. Second, RaC did a poor job simultaneously accounting for target and alternative behaviors across conditions. We present a revised model incorporating a role for more local signaling effects of reinforcer deliveries or their absence on response allocation. Such signaling effects are suggested to impact response allocation above and beyond the values of the target and alternative behaviors as longer-term repositories of experience. The new model provides an excellent account of the data and can be viewed as an integration of RaC and a quantitative approximation of some aspects of Context Theory.     

All Behavior is choice: Revisiting an evolutionary theory's account of behavior on single schedules

The axiomatic principle that all behavior is choice was incorporated into a revised implementation of an evolutionary theory's account of behavior on single schedules. According to this implementation, target responding occurs in the context of background responding and reinforcement. In Phase 1 of the research, the target responding of artificial organisms (AOs) animated by the revised theory was found to be well described by an exponentiated hyperbola, the parameters of which varied as a function of the background reinforcement rate. In Phase 2, the effect of reinforcer magnitude on the target behavior of the AOs was studied. As in Phase 1, the AOs' behavior was well described by an exponentiated hyperbola, the parameters of which varied with both the target reinforcer magnitude and the background reinforcement rate. Evidence from experiments with live organisms was found to be consistent with the Phase-1 predictions of the revised theory. The Phase-2 predictions have not been tested. The revised implementation of the theory can be used to study the effects of superimposing punishment on single-schedule responding, and it may lead to the discovery of a function that relates response rate to both the rate and magnitude of reinforcement on single schedules.