Certain predictions are such that their accuracy can be affected by their dissemination, by their being believed and acted upon. Examples of such reflexive predictions are presented. Various approaches to the precise delineation of this category of predictions are explored, and a definition is proposed and defended. Next it is asked whether the possible reflexivity of predictions creates a serious methodological problem for the social sciences. A distinction between causal and logical reflexivity helps support a negative answer. Finally, we consider (...) the thesis that "this characteristic of predictions is peculiar to human affairs" (Merton), and an attempted rebuttal (Grunbaum). It is argued that Grunbaum's rebuttal is ineffective. (shrink)

Previous research conducted in 1999 highlighted ethical concerns behind challenge studies inducing psychosis with ketamine and made recommendations to enhance ethical standards. Recently, a plethora of clinical trials have evaluated the efficacy of ketamine to treat mood disorders, which lead to complex ethical issues. Pharmaceutical companies and researchers hope to profit by developing patentable variations on ketamine for treating depression. Media have labeled ketamine as a “miracle” antidepressant. Some clinics offer expensive off-label use of ketamine to treat mood disorders. This (...) article examines the ecological validity of ketamine trials, measures to protect patients, informed consent procedures, financial inducements to participants and conflict of interest of researchers, therapeutic misconception, concealment, and deception. Further recommendations are purposed to improve ethical standard of clinical research involving ketamine. (shrink)

The inductive category formation framework, an influential set of theories of learning in psychology and artificial intelligence, is deeply flawed. In this framework a set of necessary and sufficient features is taken to define a category. Such definitions are not functionally justified, are not used by people, and are not inducible by a learning system. Inductive theories depend on having access to all and only relevant features, which is not only impossible but begs a key question in learning. The crucial (...) roles of other cognitive processes (such as explanation and credit assignment) are ignored or oversimplified. Learning necessarily involves pragmatic considerations that can only be handled by complex cognitive processes.We provide an alternative framework for learning according to which category definitions must be based on category function. The learning system invokes other cognitive processes to accomplish difficult tasks, makes inferences, analyses and decides among potential features, and specifies how and when categories are to be generated and modified. We also examine the methodological underpinnings of the two approaches and compare their motivations. (shrink)

This article discusses ways in which academics and concerned individuals committed to the faster eradication of extreme poverty might make a contribution. It argues that this discussion needs to be informed by examining the lessons of academics who have been working in the development field for many decades tell us about success and failures and possible ways forward. Following the introduction, section two attempts to draw out from the work of academics, researchers and policymakers in the “world of development” what (...) we know and have learned about how best to accelerate the process of reducing extreme poverty in the world, and what “doesn't work”. Against this backdrop, the third section discusses different ways that academics from outside the professional development community might effectively contribute to the faster or more effective eradication of global poverty. It considers in particular some current knowledge gaps in the development field which might be bridged by academic from the fields of moral and political philosophy. Finally, section four provides a brief discussion of the types of anti-poverty organizations concerned individuals might support, providing a check-list of questions to help assess their approaches, strengths and weaknesses. It suggests that as the faster eradication of poverty requires a series of interventions on many different fronts, academics need to approach poverty eradication through a multifocal lens and prioritize support to effective and transparent anti-poverty agencies working at the local, national and international levels. (shrink)

We present a theory of conversation comprehension in which a line of the conversation is “understood” by relating it to one of seven possible “points”. We define these points, and present examples where it seems plausible that the failure to “get the point” would indeed constitute a failure to understand the conversation. We argue that the recognition of such points must proceed in both a top down and bottom up fashion, and thus is likely to be quite complicated. Finally, we (...) see the processing of information in the conversation to be dependent upon which point classification the user decides upon. (shrink)

Rules of conversation are given that specify what can follow what. A system for deciding what makes a reasonable subject for a conversation is shown. Topics are discussed and rules for topic shift are presented.

This paper outlines some of the issues and basic philosophy that have guided my work and that of my students in the last ten years. It describes the progression of conceptual representational theories developed during that time, as well as some of the research models built to implement those theories. The paper concludes with a discussion of my most recent work in the area of modelling memory. It presents a theory of MOPs (Memory Organization Packets), which serve as both processors (...) and organizers of information in memory. This enables effective categorization of experiences in episodic memory, which in turn enables better predictive understanding of new experiences. (shrink)

In the author's words: "This book is an honest attempt to understand what it means to be educated in today's world." His argument is this: No matter how important science and technology seem to industry or government or indeed to the daily life of people, as a society we believe that those educated in literature, history, and other humanities are in some way better informed, more knowing, and somehow more worthy of the descriptor "well educated." This 19th-century conception of the (...) educated mind weighs heavily on our notions on how we educate our young. When we focus on intellectual and scholarly issues in high school as opposed to issues, such as communications, basic psychology, or child raising, we are continuing to rely on outdated notions of the educated mind that come from elitist notions of who is to be educated and what that means. To accommodate the realities of today's world it is necessary to change these elitist notions. We need to rethink what it means to be educated and begin to focus on a new conception of the very idea of education. Students need to learn how to think, not how to accomplish tasks, such as passing standardized tests and reciting rote facts. In this engaging book, Roger C. Schank sets forth the premises of his argument, cites its foundations in the Great Books themselves, and illustrates it with examples from an experimental curriculum that has been used in graduate schools and with K-12 students. Making Minds Less Well Educated Than Our Own is essential reading for scholars and students in the learning sciences, instructional design, curriculum theory and planning, educational policy, school reform, philosophy of education, higher education, and anyone interested in what it means to be educated in today's world. (shrink)

Our purpose in this paper is to characterize the methodological role of judges in clinical psychology. What, methodologically speaking, do the judges do for the experimenter in this area? Why, and in what ways, are the experimenter's procedures more respectable, his results more valid, when he employs judges? In order to present a concrete example of the use of judges we begin by describing in some detail a procedure actually employed in the testing of an hypothesis. Next we contrast this (...) procedure with a prima facie analogous one from chemistry, noting that an appeal to judges here would be clearly superfluous. Our problem then presents itself in the form: “Why these sorts of differences between chemistry and clinical psychology?”. As the argument develops it becomes clear that the methodological significance of what is called “clinical insight” must be carefully considered in any attempt to understand the peculiar importance of the judges’ role in psychology. It is argued that the absence of precise criteria for typical concepts of clinical psychology is closely connected with the frequent appeals to clinical insight. And it is urged that the full significance of the employment of judges emerges only when seen in the light of this conceptual uncertainty, and of the clinician's attempt to operate scientifically in spite of that uncertainty. (shrink)

Depue & Collins's (D&C's) work relies on extrapolation from data obtained through studies in experimental animals, and needs support from studies of the role of dopamine (DA) neurotransmission in human behaviour. Here we review evidence from two sources: (1) studies of patients with Parkinson's disease and (2) positron emission tomography (PET) studies of DA neurotransmission, which we believe lend support to Depue & Collins's theory, and which can potentially form the basis for a true neurochemistry of personality.

In this book, Roger C. Schank sets the stage for sparking conversations and innovative changes in schools to help make school experiences relevant to students and prepare them for the future. By implementing new literacies, globally connected technology, and career-based curricula, teachers can provide students with the tools they need to succeed during and after high school.

Based on his experience as an educator, the author criticizes current methods and philosophies of learning and teaching. Learning should be geared towards practice ; teaching should be about exciting students and helping them perform meaningful tasks, rather than having them passively absorb knowledge that they cannot see the use of. Feedback from former students allows the author to posit a few simple rules for teaching and learning, and identify some of the major misconceptions about the role of the teacher (...) and the nature of the learning process. A pragmatics of learning starts from naturally occurring learning situations and emphasizes teaching that is based on the learner’s own experiences, where mistakes are seen as a major source of insight into what is needed in order to achieve success in education and to remake the broken educational system that we are trying to cope with in today’s schools. (shrink)