Descartes’ Dog: a Clock with Passions?

Although much has been written on Descartes’ thought on animals, not so much has originated in, or has taken full account of, Descartes’ views on (human) emotions. I explore here the extent to which the latter can contribute to the debate on whether he embraced, and to which extent, the doctrine of the bête machine. I first try to show that Descartes’ views on emotions can help offer new support to the skeptical position without necessarily creating new tensions with other central aspects of his philosophy. And second, I sketch the type of theory of animal passions which Descartes could have accepted. The general conclusion I draw is not that Descartes did not hold the view of the bête machine but rather that we can find within his thought a solid stream of ideas, which became stronger towards the end of his life, that points in the opposite direction.     

Genetic approaches to the study of synaptic plasticity and memory storage

Long-term memory is believed to depend on long-lasting changes in the strength of synaptic transmission known as synaptic plasticity. Understanding the molecular mechanisms of long-term synaptic plasticity is one of the principle goals of neuroscience. Among the most powerful tools being brought to bear on this question are genetically modified mice with changes in the expression or biological activity of genes thought to contribute to these processes. This article reviews how strains of mice with alterations in the cyclic adenosine monophosphate/protein kinase A/cyclic adenosine monophosphate-response element-binding protein signaling pathway have advanced our understanding of the biological basis of learning and memory.     

Developing cohesion in court-mandated group treatment of male spouse abusers

Cohesion in group treatment of spouse abusers plays an important and often overlooked role. Involuntary abuser groups can benefit from cohesion, but due to their unique structure, cohesion may develop differently than in voluntary psychotherapy groups. Initially, abuser groups may develop premature levels of cohesion that can make group members unwilling to express conflict, develop intimacy, and take responsibility for their actions. Understanding the abuser personality and the unique characteristics of involuntary abuser groups can shed light on why cohesion develops the way it does and the importance it plays in abuser groups. Developing effective interventions that target premature cohesion can help the group members express conflict, develop intimacy, and take responsibility for their actions, thus bringing about therapeutic levels of cohesion.     

Problem structuring heuristics in strategic decision making

In a laboratory experiment using 73 undergraduate students as subjects, comparisons were made between the use of a convergent, divergent, and limited heuristic for problem structuring under different stress levels. It was found that subjects using either the convergent or the divergent heuristic had lower satisfaction with the process and lower confidence in their results than those using the limited heuristic. There were no differences in the time used or the quality of results between subjects using the convergent and divergent heuristic. Stress reduced the quantity of results when using either the convergent or divergent heuristic. The subjects may have preferred the limited heuristic because the use of the convergent or divergent heuristic used more time, thus more energy, and resulted in more alternatives, thus increased uncertainty. It is also possible that the subjects preferred their future career plans to be more ambiguous than the use of either the convergent or divergent heuristic allowed.     

Biofeedback and reinforcement to increase heterosexual arousal in homosexuals

Relatively few procedures exist for developing heterosexual arousal in the treatment of sexual deviation (Barlow, 1973) although several recent studies suggest this is a necessary component of treatment (Feldman and MacCulloch, 1971; Bancroft, 1970; Barlow, 1974).In recent years, biofeedback techniques have been applied to many types of disorders (Blanchard and Young, 1974). Basic to biofeedback technology is the notion that providing a person with feedback (or immediate information) of a bioelectric response enables him to learn (gain) self-control of that response. These responses traditionally have been considered involuntary and include heart rate (Scott et al., 1973a). blood pressure (Benson et al., 1971), stomach acid pH (Welgan. 1972), and electroencephalographic activity (Sterman, 1972), In the present experiments, biofeedback and its attendant technology was applied to the problem of generating heterosexual arousal in homosexual males.Frequently, in biofeedback research, reinforcement has been used in addition to feedback in attempting to teach self-control of a response. In fact, an alternate way of conceptualizing and describing the biofeedback research is in terms of operant conditioning (e.g., Weiss and Engel, 1971: Scott et al., 1973b). In one sense, however, feedback and reinforcement are inextricably confounded: the delivery or non-delivery of a reinforcer provides the S with information about the rightness or wrongness of his response and hence, binary feedback about it. Likewise, if feedback or knowledge of whether the response has reached a criterion level or not is effective in leading to a change in the response, then feedback functions as a reinforcer. Reinforcement, however, may be viewed as providing both information about the response (feedback) plus an incentive to change it in the desired direction in addition to any incentive provided by successful performance of a task. Thus, if one provides Ss with a separate, functionally defined reinforcer in such a way that no additional information about the response is conveyed, it becomes possible to detect additive effects of reinforcement over feedback effects. Such was the second purpose of this study.Several recent analogue experiments with volunteers have reported success in modifying erections through feedback and/or reinforcement. Price (1973) found that heterosexual volunteers who received analogue visual feedback as well as binary feedback, provided by a colored light once the needle had passed a pre-set criterion, showed a shorter latency to peak erection and maintained criterion erection longer than a control group receiving no feedback. Both groups were listening to erotic audio tapes. Rosen (1973) demonstrated significant suppression of tumescence in a group of heterosexual volunteers provided with response contingent signal lights. A group receiving non-contingent feedback did not show this effect. In a technical paper, Laws and Pawlowski (1973) have suggested audio feedback of tumescence as a treatment for deficits in sexual arousal.In the clinic, Harbison, Quinn and McAllister (1970), in an uncontrolled case study, reported increasing heterosexual responsiveness in homosexuals through reinforcement of erection. In one of their homosexual patients they were able, over a long series of trials, to increase erection to a heterosexual stimulus (female slide) through rewarding progressively larger responses with sips of iced lime after the patient was water deprived. In addition to the reinforcement, this S was given feedback, of sorts, in that a light was flashed for each successful trial. A second homosexual patient was similarly rewarded for maintaining progressively longer and clearer fantasies of heterosexual behavior. Since other treatments were also applied and no experimental analysis was performed, it is not possible to evaluate the effectiveness of the procedure.In the present experiment the separate effects of feedback and reinforcement to increase heterosexual arousal in homosexuals was experimentally evaluated using single case experimental design methodology (Barlow and Hersen, 1973). Since each experiment was somewhat different in design and purpose, each will be described separately.