A Commodore 64-based interface system for the operant laboratory

A system of interfaces for the Commodore 64 (C-64) microcomputer for use in the operant laboratory is described. This system frees the experimenter from limitations on the number of I/O lines available on the user port of the C-64 and offers the control of operant chambers for a low cost. Subroutines in machine code to control the interfaces, offering millisecond timing of external events, are presented. A sample BASIC program demonstrates how the subroutines are called from BASIC to run a simple discrimination experiment.     

A computerized system for monitoring and controlling intracranial electrical self-stimulation behavior

An automated system for measuring intracranial self-stimulation behavior is described. The system consists of two Commodore 6502 microcomputers interfaced with a constant-current generator and a standard operant chamber. The system hardware allows sine- and square-wave stimulation. Stimulus intensity can be varied in 256 steps between 0 and 100, 0 and 500, or 0 and 1,000 /µA. The system programs, which are written in machine language, allow the control of various schedules of reinforcement, the counting of operant responses and reinforcements, the measurement of interresponse intervals, and the storage of the data on disk. The software is designed for the determination of the threshold of reinforcement, on the basis of the titration of postreinforcement pauses caused by changeover in schedule control between concurrent continuous reinforcement and fixed ratio schedules.     

Medicine as business and profession

This paper analyzes one dimension of the frequently alleged contradiction between treating medicine as a business and as a profession, namely the incompatibility between viewing the physician patient relationship in economic and moral terms. The paper explores the utilitarian foundations of economics and the deontological foundations of professional medical ethics as one source for the business/medicine conflict that influences beliefs about the proper understanding of the therapeutic relationship. It, then, focuses on the contrast and distinction between medicine as business and profession by critically analyzing the classic economic view of the moral status of medicine articulated by Kenneth Arrow. The paper concludes with a discussion of some advantages associated with regarding medicine as a business.     

Negative priming insame-different matching: Further evidence for a central locus of inhibition

Responses to recently ignored information may be slower or less accurate than responses to information not recently encountered. Such negative priming effects imply that the mechanism of selective attention operates on unattended, as well as attended, information. In the present experiment, subjects judged the second and fourth letters of five-letter strings (e.g., BABAB) as “same” or “different.” Responses were slower when a target letter was identical to the distractors presented in the immediately preceding trial. This effect did not depend on which response was required on the current or preceding trial. The results suggest that ignored information is functionally disconnected from the response system as a whole, rather than from a specific response.     

Connecting the Commodore 64 to the IBM PC

Hardware is described that permits bidirectional transfer of data between the Commodore 64 and an IBM-compatible PC. Commercial terminal programs can be used to transmit data. The hardware, which can be constructed for less than $15, opens up several opportunities for making good use of the cost-effective C64 computer.     

Abstracts

Integrative Psychological and Behavioral Science -     

Book reviews

The Word Speaks to the Faustian Man. Som Raj Gupta. Delhi, Motilal Banarsidass. 455+xvi pp., Rs. 500

A History of Indian Buddhism, From Sākyamuni to Early Mahāyāna. Hirakawa Akira, translated and edited by Paul Groner, 1990. Asian Studies at Hawaii, No. 36. Honolulu, HI, University of Hawaii Press. xix +402, £33.25

The Doctrine of the Upanisads and the Early Buddhism. Hermann Oldenberg, translated by Shridhar B. Shrotri, 1991. Delhi, Motilal Banarsidass. Rs. 225

Evil and the Mystics’ God: Towards a Mystical Theodicy. Michael Stoeber. London, Macmillan. x+225 pp., £40     

Affective responses to seeing oneself for the first time on unedited videotape

Despite the growing popularity of watching oneself on videotape, little systematic research has been conducted determine viewers' affective responses to video replay. This study addresses the question: what affective responses do women have when they view themselves for the first time on unedited videotape, in comparison to their responses when they view a peer or nature scenes on videotape? Affective responses were measured in three ways: self-report, physiological, and behavioral. Subjects who viewed themselves reported more negative feelings and anxiety, and smiled more frequently than subjects who watched another person or nature scenes on video. Subjects with high private self-consciousness had higher mean arterial blood pressures when viewing themselves than did subjects with low private self-consciousness. Overall, the implications for seeing oneself on video point to potential embarrassment but generally moderate effects.     

Toward a therapeutic jurisprudence analysis of medication refusal in the court review model

A therapeutic jurisprudence analysis attempts to discern the role of legal proceedings, lawyers and judges in producing therapeutic or anti-therapeutic consequences. This paper will attempt to use the therapeutic jurisprudence framework to analyze the legal and administrative aspects of court review as it was reported during a one year epidemiologic study of drug refusal. Characteristics of the review process, the effect on patient refusal, and the attitudes of treating psychiatrists are presented. To broaden the clinical context of the administrative findings, selected clinical characteristics of refusing patients, their attitudes toward mental illness, reasons for refusing medication and satisfaction with court review will be described. The discussion attempts to show how the initial administrative study findings may be interpreted in the broader context of their relationship to the achievement of therapeutic outcomes.