Towards a research programme for ethics and technology

In this editorial contribution, two issues relevant to the question, what should be at the top of the research agenda for ethics and technology, are identified and discussed. Firstly: can, and do, engineers make a difference to the degree to which technology leads to morally desirable outcomes? What role does professional autonomy play here, and what are its limits? And secondly, what should be the scope of engineers' responsibility; that is to say, on which issues are they, as engineers, morally obliged to reflect? The research agendas proposed by the authors contributing to this special section, implicitly, give different answers to these questions. We suggest that an explicit discussion of these issues would greatly help in constructing a common research agenda.     

Resistance to change of operant variation and repetition

A multiple chained schedule was used to compare the relative resistance to change of variable and fixed four-peck response sequences in pigeons. In one terminal link, a response sequence produced food only if it occurred infrequently relative to 15 other response sequences (vary). In the other terminal link, a single response sequence produced food (repeat). Identical variable-interval schedules operated in the initial links. During baseline, lower response rates generally occurred in the vary initial link, and similar response and reinforcement rates occurred in each terminal link. Resistance of responding to prefeeding and three rates of response-independent food delivered during the intercomponent intervals then was compared between components. During each disruption condition, initial- and terminal-link response rates generally were more resistant in the vary component than in the repeat component. During the response-independent food conditions, terminal-link response rates were more resistant than initial-link response rates in each component, but this did not occur during prefeeding. Variation (in vary) and repetition (in repeat) both decreased during the response-independent food conditions in the respective components, but with relatively greater disruption in repeat. These results extend earlier findings demonstrating that operant variation is more resistant to disruption than is operant repetition and suggest that theories of response strength, such as behavioral momentum theory, must consider factors other than reinforcement rate. The implications of the results for understanding operant response classes are discussed.     

透视医疗纠纷——辨析医患双方的权利和义务

发生医疗纠纷的一个重要原因是医患双方各自站在自己的立场上,维护自己的权利而产生的争端。由于我国卫生法制的滞后,患者被作为消费者伸张权利逐步成为趋势。但我国的医疗卫生事业的性质决定患者不能与消费者等同。医患双方应在更好的游戏规则下协调关系,减少纠纷。     

Betrayal And Paranoia: The Psychotherapist's Function as an Intermediary

We present an approach to the problem of structuring a therapeutic alliance with patients presenting paranoid symptoms, using both psychoanalytical and cognitive techniques. Initially, we focused on one of the main aspects of the paranoid worldview: the fear of being betrayed and the tendency to betray. This is a defense maneuver, through which patients deny their passivity, and the impotence in the relationship with their own internal needs and with the significant people in the external world, including the therapist. In our experience to build up a working relationship, both a psychoanalytical interpretation of unconscious conflicts and the cognitive analysis of dysfunctional beliefs are needed. Often, in more serious cases, the role of nonqualified object must be accepted at the beginning, due to the patient's need to be in control of the situation. Only then can a therapeutic phase begin, in most cases, through an integrated approach that includes pharmacological, psychodynamic, and cognitive modalities.     

Parent Perspectives on Family Involvement in Therapeutic Foster Care

There has been an increasing focus on family involvement in the treatment of children with serious emotional disorders, but it has received only limited attention in relation to out-of-home placements. I present the findings from a qualitative study of family involvement from the perspectives of parents whose children were placed in therapeutic foster care (TFC). Parents' perspectives on their involvement in placement decisions, relationships with professionals and TFC providers, practices related to family involvement, barriers to involvement, and strategies to enhance family involvement are described. Parents of children in TFC wanted to have contact with their children and to participate in decision making. They described relationships and practices that contributed to their involvement.     

Why? Versus Why Not?: Potentialities of Aging in Shaw's Back to Methuselah

Bernard Shaw's critique of society's sacred cows, as well as his participation in the social, cultural and political marketplace in which he lived, resemble the new historical/cultural materialism of contemporary theory. In Back to Methuselah, Shaw examines the notions of aging and illuminates the degree to which our chronological standards of old age are sociological not biological constructs. This tour de force on aging both dramatizes age as a function of societal and/or individual choice, not as a biological given, and juxtaposes opinions toward aging in such a way that flexible attitudes toward the subject emerge.     

Equivalence class establishment, expansion, and modification in preschool children

Preschool children were taught four two-choice match-to-sample conditional discriminations with 10 arbitrary visual stimuli. For 6 participants, 2 of the 10 stimuli served as the sample, or conditional, stimuli in all discriminations. For 5 additional participants, the same pair of stimuli served as the discriminative, or comparison, stimuli in all discriminations. Equivalence classes were established with more participants in the latter group, replicating prior research with participants with retardation. Four participants, in whom equivalence classes were established and who were available for further participation, were exposed to new conditional discriminations without trial-by-trial feedback and involving some novel and some familiar stimuli. Consistent conditional responding was observed, and tests for inclusion of the novel stimuli in the original classes showed class expansion. Training to reverse the unreinforced conditional performances produced a reversal of class membership in 3 of 4 participants, an outcome not consistent with other studies. The results are discussed with respect to the interaction of class structure and size.     

Effects of decision-making on reactions to an evaluational stressor

The present study tested the hypothesis that an opportunity to make decisions enhances perceived control. This hypothesis predicts that decision-making will reduce the adverse effects of stress. Subjects worked on an intellectual task and their stress reactions were assessed using subjective and behavioral measures. Decision-making improved the highly anxious subjects' persistence with the task. This finding supports the hypothesis. However, less anxious subjects persisted less after being allowed to make decisions. Several explanations positing possible cognitive and motivational processes of the less anxious subjects are offered.     

Effects of reinforcement magnitude on spontaneous recovery.

Extinction of operant behavior has been associated with a number of undesirable effects. One such effect is the temporary reappearance of behavior after responding appears to be completely extinguished, known as spontaneous recovery. In this report, the occurrence of spontaneous recovery and its attenuation with large amounts of reinforcement were examined during the treatment of disruption.