M.T.S.: An adaptable microcomputer-based testing system

An Apple II + computer-based human testing system is described. The system, which was developed using the Pascal language, provides library units of low-level procedures to rapidly access a clock, collect responses, control video output, control a touch-sensitive monitor, and display high-resolution graphics. Built-in hardware and software checks provide a high degree of system reliability. Use of easily altered text files for control of trials within a task and inclusion of and ordering of tasks within a session allows the system to be readily adapted.     

When experiments go wrong: the U.S. perspective

The view that once prevailed in the U.S.--that research is no more dangerous than the activities of daily life--no longer holds in light of recent experience. Within the past few years, a number of subjects (including normal volunteers) have been seriously injured or killed in research conducted at prestigious institutions. Plainly, when we are talking about research going wrong, we're talking about something very important. We have seen that experiments can go wrong in several ways. Subjects can be injured--physically, mentally, or by having other interests violated. Investigators can commit fraud in data collection or can abuse subjects. And review mechanisms--such as IRBs--don't always work. The two major issues when research goes wrong in any of these ways are, first: What will be done for subjects who have suffered an injury or other wrong? and second: How will future problems be prevented? The present system in the U.S. is better at the second task than the first one. Part of the difficulty in addressing the first lies in knowing what "caused" an apparent injury. Moreover, since until recently the problem of research-related injuries was thought to be a small one, there was considerable resistance to setting up a non-fault compensation system, for fear that it would lead to payment in many cases where such compensation was not deserved. Now, with a further nudge from the NBAC there is renewed interest in developing a formal system to compensate for research injuries. Finally, I have tried to show that our system of local oversight is only partially effective in improving the design of experiments and the consent process in light of "unexpected (adverse) results." As many observers, including the federal General Accounting Office (GAO), have reported, the requirement for "continuing review" of approved research projects is the weak point in the IRB system. The probable solution would be to more strictly apply the requirement that investigators report back any adverse results, de-emphasizing the "screen" introduced by the present language about "unexpected" findings. Yet, despite its weaknesses, there are good aspects to the local basis of our oversight system, and when problems become severe enough, OHRP is likely to evaluate a system and insist on local improvements. Thus, while the U.S. system is far from perfect in responding when research goes wrong, our experience may be useful to others in crafting a system appropriate to their own circumstances. One of the major tasks will be to adequately define what triggers oversight--that is, who reports what to whom and when? The setting of this trigger needs to balance appropriate incentives and penalties. Any system, including our own, will, in my opinion, work much better once an accreditation process is in place, which will offer much more current and detailed information on how each IRB is functioning and what steps are needed to help avoid "experiments going wrong."     

U.S. Employment Service Aptitude and Interest Testing for Occupational Exploration

A new system of aptitude and interest testing in relation to a psychologically meaningful structure of occupations is described. A variety of applications of the system is described, including an example of group assessment and occupational exploration for workers who were about to lose their jobs due to a reduction in the work force.     

Landmark-based spatial search in honeybees. I.

Honeybees were trained to find sugar water in the middle of an array of two landmarks of different colours. Unrewarded tests compared searching on the training array with searching on rotated arrays. On rotated tests, a system using the angles between landmarks would continue to search in the middle. A system using vectors to individual elements would search at locations outside the rotated array at which the distances and compass directions to a subset of landmarks matched. Results indicated that bees used both elements and interlandmark angles, but they relied most on one favourite landmark element. Results support the template model of landmark use in honeybees, with the minor parametric modification that weights given to different elements may be unequal. Received:6 July 1998 / Accepted after revision:7 December 1998     

斯腾伯格思维风格理论述评

通过对传统学校教育弊端的分析,引入了斯腾伯格的“思维风格”理论,即三个层面上13种不同风格的心理自我管理理论,同时阐述了该理论与智力的关系,以及对学校教学改革的影响。我们通过保存多种风格形式,提升学校教学和评估环爷,将多种教育方式匹配于不同的风格类型,并积极教授之来实现对传统教学体制的改革。     

The importance of I.P. Pavlov for the development of neuroscience.

By his experimental and theoretical work on the physiology and pathophysiology of the higher nervous activity I.P. Pavlov significantly influenced the development of Neuroscience. During the 1950 Pavlovian Conference in Moscow, Stalin and the Communist Party tried to dogmatize his and his pupils' fundamental theories. But the Pavlovian ideas were developed by his pupils in open discussions with representatives of other schools in a very creative way, opening the doors for a systemic approach to understanding the integrative functional systems of brain and behavior. Pavlov emphasized the high plasticity of the central nervous system, investigated the complex functional systems within the brain and between the organism and its environment, and designed models for pathological deviations of the higher nervous activity. During his last years, he freed himself from the strong deterministic view and characterized the organism and its environment as a self-organizing system.     

ľInformatisation des Tests au Service de Psychologie de la S.N.C.F

ľauteur expose la génèse de ce système et sa réalisation matérielle. Dans un premier chapitre, il fait ľinventaire des méthodes psychologiques à informa-tiser selon la nature des tests, leur exploitation et leur gestion. Il évoque, dans un deuxième chapitre, les différentes solutions envisagées en fonction de ľévolution des technologies et des méthodes psychologiques utilisées, en particulier entre un système en réseau ou un système autonome. C'est finale-ment un système autonome qui a été retenu à la S.N.C.F. et qui est décrit dans un troisième chapitre. II s'agit ďun matériel modulable pouvant s'adapter sur les différents postes de travail: tests textes, tests graphiques, et tests de liaison psycho-moteurs. Pour conclure, ľauteur dresse un premier bilan et évoque les developpements futurs.
The author presents the development of the computerised test information system operated by the French national railways. In the first part, he draws up an inventory of the psychological methods that can be computerised according to the kinds of tests, their application, and their management. In the second part, he demonstrates the different solutions considered possible, these being related to the evolution of technologies and to the psychological methods used, particularly between a network system and an autonomous system. An autonomous system, selected by the S.N.C.F., is decribed in the third part. The system can be adapted to the different work posts. Finally, the author gives a list of the first results obtained and envisages future developments.     

Biology of elderly suicide.

Most studies of suicide in younger patients have demonstrated significant alterations in the serotonin system. Although a high percentage of completed suicides occur in late-life, to date very few studies of the biology of suicide have focused on this age group. This chapter describes age-related changes in the central nervous system pertinent to the biology of suicide, then reviews post-mortem biological studies of the brains of suicides and suicide attempters. As suicide attempts in the elderly are characterized by the use of violent means, biologic studies of impulsive violence are discussed. Finally we describe data on the effect of degenerative diseases on the serotonin system and the possible link to increased suicidal behavior in affected patients. This review underscores the need for further study of the biology of suicide in the geriatric age group.     

Maintaining patients' improvements in a token economy.

Eighteen long stay male patients (diagnosis chronic schizophrenia) were involved in a six month token economy prior to random assignment to one of three experimental groups to investigate the importance of social reinforcement and other token-related variables in maintaining improvements brought about by the token system. Assessment included standardised psychiatric rating scales, nurse rating scales, and behavioural measures. Analysis of variance suggests the full token economy system produced significant improvements, but that the social factors involved in token exchanges were not demonstrably important sources of reinforcement. and that none of the variables studies at the experimental phase were critical factors. Once patients returned to a complete token system, results indicate that this may have more value in the promotion of work activities rather than social responding. It is argued that the token system provides a necessary clear structure within which nurses can encourage continuous improvements with long stay patients.     

Cephalic mechanism for social control of fissioning in planarians: III. Central nervous system centers of facilitation and inhibition.

Previous studies have indicated that asexual reproduction (fissioning) in the planarian Dugesia dorotocephala is socially controlled through a cephalic mechanism: Isolation releases fissioning; grouping inhibits it; decapitation, at the level of the auricles, releases it even in grouped subjects. The brain is not necessary for programming the actual events of fissioning; these are orchestrated by the segmental plexus fissioning (SPF) system. Various surgical cuts were made to ablate selected portions of the central nervous system of isolated and grouped planarians in order to ascertain the inhibitory or facilitatory effects of these in the physiological mediation of such control on the SPF system. These results were synthesized into a model of this control system; the anterior lobes and optic regions of the brain inhibit the SPF system, and the anterior and caudal segmental plexuses facilitate it. These influences are partially tonic and partially contingent upon social stimulation.     

The time it takes to stratify two phenomenal surfaces.

The time the perceptual system takes to generate two overlapping phenomenal surfaces is estimated to be about 60 ms by a recognition task and 200-250 ms by a primed matching task. Here, a reaction-time task was used to test these estimates. It is plausible that when two overlapping phenomenal surfaces appear abruptly in the visual field the perceptual system sends a signal to the response system when the localisation of the parts of these surfaces begins. The perceptual system should send a subsequent signal when the phenomenal overlapping of the surfaces is achieved. The reaction times to these signals were estimated in two experiments. The difference between these estimates confirms the time estimate provided by the primed matching task.     

Toward a theory of visual consciousness.

The visual brain consists of several parallel, functionally specialized processing systems, each having several stages (nodes) which terminate their tasks at different times; consequently, simultaneously presented attributes are perceived at the same time if processed at the same node and at different times if processed by different nodes. Clinical evidence shows that these processing systems can act fairly autonomously. Damage restricted to one system compromises specifically the perception of the attribute that that system is specialized for; damage to a given node of a processing system that leaves earlier nodes intact results in a degraded perceptual capacity for the relevant attribute, which is directly related to the physiological capacities of the cells left intact by the damage. By contrast, a system that is spared when all others are damaged can function more or less normally. Moreover, internally created visual percepts-illusions, afterimages, imagery, and hallucinations-activate specifically the nodes specialized for the attribute perceived. Finally, anatomical evidence shows that there is no final integrator station in the brain, one which receives input from all visual areas; instead, each node has multiple outputs and no node is recipient only. Taken together, the above evidence leads us to propose that each node of a processing-perceptual system creates its own microconsciousness. We propose that, if any binding occurs to give us our integrated image of the visual world, it must be a binding between microconsciousnesses generated at different nodes. Since any two microconsciousnesses generated at any two nodes can be bound together, perceptual integration is not hierarchical, but parallel and postconscious. By contrast, the neural machinery conferring properties on those cells whose activity has a conscious correlate is hierarchical, and we refer to it as generative binding, to distinguish it from the binding that might occur between the microconsciousnesses.     

Effector system mechanisms of coordination.

Current interest in motor learning has prompted researchers to develop models that explain the events or mechanisms underlying skill acquisition. For the most part these models have focused on sensory and perceptual mechanisms. This commentary presents a theoretical explanation of effector system mechanisms of coordination. Options are available in the central control centers and their peripheral components, tonic and phasic motor units. Implications for the methodology of motor learning are discussed as they relate to a paramount factor responsible for prompting individuals to select the most efficacious effector system mechanism option.     

Automatic classification of dysfunctional thoughts: a feasibility test.

The identification of dysfunctional thoughts is a central effort in cognitive therapy. This paper describes the first version of a computer module that classifies dysfunctional thoughts automatically. It is part of COGNO, a system we are developing to give automatic feedback on dysfunctional thoughts. The system uses rules that were developed from language markers identified in a sample of 149 dysfunctional thoughts. The system was tested with an independent set of 112 example thoughts. The system detects the majority of dysfunctional thoughts, but works reliably only for some thought categories. Automatic thought classification may be a first step toward developing natural dialogue systems in cognitive therapy.     

Integration of women into the U.S. military

This study reports male attitudes toward women beginning with the admission of women in 1976 to the U.S. Coast Guard Academy. It assesses these attitudes as a consequence of the norms of the military system and notes a trend toward more positive attitudes by successive classes since the Class of 1979. Programmatic measures to nurture and facilitate this positive trend are recommended.The author gratefully acknowledges the contribution of Dr. Steven P. Gunn, formerly of Connecticut College, to the development of this research.     

The importance of I. P. Pavlov for the development of neuroscience

By his experimental and theoretical work on the physiology and pathophysiology of the higher nervous activity I.P. Pavlov significantly influenced the development of Neuroscience. During the 1950 Pavlovian Conference in Moscow, Stalin and the Communist Party tried to dogmatize his and his pupils’ fundamental theories. But the Pavlovian ideas were developed by his pupils in open discussions with representatives of other schools in a very creative way, opening the doors for a systemic approach to understanding the integrative functional systems of brain and behavior. Pavlov emphasized the high plasticity of the central nervous system investigated the complex functional systems within the brain and between the organism and its environment, and designed models for pathological deviations of the higher nervous activity. During his last years, he freed himself from the strong deterministic view and characterized the organism and its environment as a self-organizing system. Lecture at the Annual Meeting of the Pavlovian Society, November 1, 1998, Dusseldorf, Germany.     

Sequential development of cognitive complexity.

It has been demonstrated by Bieri and others that cognitive complexity is a meaningful personality construct for adults and older adolescents. The present study investigated by use of the Adapted Modified Role Repertory Test and the Modified Role Repertory Test possible developmental change in a child's system of role constructs, i.e., a child's ability to construe social behavior in a multi-dimensional way. Subjects were 90 third, 99 fifth, 90 seventh, and 89 ninth grade children, and 83 adults. Data suggest that with time a child's system of constructs becomes more differentiated. Therefore, development is accompanied by greater cognitive complexity.     

Ecosystemic epistemology: an alternative paradigm for diagnosis.

An alternative paradigm for diagnosis based on cybernetics, ecology, and systems theory is proposed. This paradigm, termed "ecosystemic epistemology," suggests that diagnosis focus on knowing problematic situations in an ecological and systemic way. Theoretical statements concerning this approach are delineated with specific references to major family therapists. This discussion provides a foundation for an ecosystemic epistemology for diagnosis that addresses the following issues: (a) the meaning of system; (b) the symptom's presence in the system; (c) the therapist's presence in the system; (d) the ecological relationship system that emerges in diagnosis; and (e) the relation between ecosystemic epistemology and the process of diagnosis. In effect, this paper attempts to formally describe the underlying epistemology inherent in the work of therapists who approach diagnosis in an ecological and systemic way.