不同框架下的视觉定位

本实验探讨了对置于正方形、等边三角形和圆中的刺激点所进行的１点定位、２点定位、３点定位,并比较了在定位有框架和定位无框架时的情况。结果发现：（１）在刺激呈现时间为１００ｍｓ和３００ｍｓ时．在３种定位任务中,当定位有框架时被试定位的绝对误差均小于定位无框架的。（２）在两种呈现时间下被试在３种定位任务中的绝对误差均处于同一水平,表现出现了视觉定位中的结构效应,并且几个不同的框架没有不同的作用。     

风险决策中的参照点效应研究

本研究以展望理论和社会决策范式模型为基础,着重探讨三种参照点对个体和群体风险决策产生的影响。３００名被试经实验者设置参照点后分别在个体和群体条件下对不同风险度的博弈方案进行选择。结果表明：（１）个体决策中,损失参照点的被试和无得失经验者比得益者更冒险;（２）得益被试的决策受到社会比较的影响;（３）损失参照点的被试并未对群体决策有更大影响,决定群体决策结果的主要是多数原则。     

Delayed stimulus control: recall for single and relational stimuli.

In a discrete-trial symbolic matching-to-sample procedure, pigeons' left-key responses were reinforced following presentation of one center-key sample, and right-key responses were reinforced following presentation of another. Recallability was measured by the difference between log ratios of left to right responses following each sample. In Experiment 1, samples were successively presented same or different wavelengths in the relational discrimination, or individual wavelengths in the single discrimination. The rate at which recallability decreased with increasing delay since sample presentation was the same for single and relational discriminations, but the initial level of performance differed, indicating that the relational discrimination was more difficult. In Experiment 2, recall functions for easy and difficult discriminations between individual wavelengths also differed in levels of initial performance but not in rate of decrement of recallability over time. Recall for stimuli differing in complexity may therefore reflect differences in discrimination difficulty.     

Why do Alzheimer patients have difficulty with pronouns? Working memory, semantics, and reference in comprehension and production in Alzheimer's disease

Three experiments investigated the extent to which semantic and working-memory deficits contribute to Alzheimer patients' impairments in producing and comprehending referring expressions. In Experiment 1, the spontaneous speech of 11 patients with Alzheimer's disease (AD) contained a greater ratio of pronouns to full noun phrases than did the spontaneous speech produced by 9 healthy controls. Experiments 2 and 3 used a cross-modal naming methodology to compare reference comprehension in another group of 10 patients and 10 age-matched controls. In Experiment 2, patients were less sensitive than healthy controls to the grammatical information necessary for processing pronouns. In Experiment 3, patients were better able to remember referent information in short paragraphs when reference was maintained with full noun phrases rather than pronouns, but healthy controls showed the reverse pattern. Performance in all three experiments was linked to working memory performance but not to word finding difficulty. We discuss these findings in terms of a theory of reference processing, the Informational Load Hypothesis, which views referential impairments in AD as the consequence of normal discourse processing in the context of a working memory impairment.     

Exploring Connections of the Supervisors in Supervision

Four therapists have worked closely in a professional support group. More recently attention has been given to the group processes and internal experiences of the group itself. An observation of the four members of this group is that the group process has allowed for peer validation, fortuitously resulting in their professional identities shifting and evolving. They have become curious about the interface between and the integration of personal and professional facets of the therapist's self. A resulting discovery has been that the very mechanisms which disconnect the therapist out there may serve to promote connection in the support group.     

Reinventing the Self in the Face of Received Transgenerational Hatred in the African American Community

There are many clinical methods for understanding and transforming the impact of historical trauma, and reinventing the self in the clinical process. However, the approach advocated here requires that regardless of what clinical method of intervention is chosen, a particular strand must run through the process of treatment to produce durable and meaningful change. This strand must run through psychoanalysis, creative and expressive arts therapies, as well as many forms of intervention in aggrieved communities. The strand includes understanding human suffering, the way that particular suffering is mentalized by the victimized group and subsequently reenacted by generations to come. In technical terms there must first be many profiles of understanding of the historical injury. Then there must be an understanding of how the aggrieved community has stored in their communal memory those psychological hurts—those feelings of humiliation and changing historical accounts of the actual injuries. Subsequently those sendimentations of historical grievances are enacted within the transference in the clinical situation where the grievances are not only staged, but re-staged, distorted or extended. Then comes the most decisive obligation the clinician has towards the analysand, patient, client or community that is attempting to transform itself. That decisive obligation is to extract the errand or ambush towards extinction and to undergo the unpleasant drudgery of constantly engaging the mandate to die or destroy oneself in order to find new and more flexible forms of adaptation.     

Discrimination training facilitates pigeons' performance on one-trial-per-day delayed matching of key location

Six pigeons were tested on a one-trial-per-day variant of delayed matching of key location. In one condition, a trial began with the illumination of a pair of quasi-randomly selected pecking keys in a large 10-key test box. Pigeons' pecks to one key (the sample) were reinforced with 8-second access to grain on a variable-interval 30-second schedule, whereas pecks to the other key (the distractor) had no scheduled consequences. In the second condition, the nonreinforced distractor was not presented. In both conditions, subjects were removed from the apparatus after 15 minutes and placed in a holding cage. Subjects were subsequently replaced in the box after a delay (retention interval) of 30 seconds and were reexposed to the illuminated sample and distractor keys for 1 minute. If a pigeon made more pecks to the sample during this interval, the distractor was extinguished and subsequent pecks to the sample were reinforced on the previous schedule for an additional 15 minutes. If, however, a pigeon made more pecks to the distractor, both keys were extinguished and the subject was returned to its home cage. For all subjects, matching-to-sample accuracy was higher in the first condition. In a second experiment, the retention interval was increased to 5, 15, and 30 minutes, and then to 1, 2, 4, 8, 12, and 24 hours. Most subjects remembered the correct key location for up to 4 hours, and in one case, up to 24 hours, demonstrating a spatial-memory proficiency far better than previously reported in this species on delayed matching tasks. The results are discussed in terms of the commonly held distinction between working and reference memory.     

De l'argumentation comme métamorphose

Linguistic rhetoric and argumentative reasoning are generally identified. Certain types of problems, however, make use of non-verbal systems of representation, and, among them, image. Image is not just matter but also form, and computer processing in AI makes it possible to grasp this form by linguistic means (logico-mathematical languages). The synthesis of animated images has made it possible to represent metamorphoses, the thought of the unexpected. The fact that language produces image (and conversely) does not fail to transform the standard ways of thinking about epistemology.

     

CRITICAL REALISM IN THEORY AND PRACTICE: RESPONSE TO ROBBINS, VAN HUYSSTEEN, AND HEFNER

Abstract. I read Robbins's essay as a hermeneutics of suspicion against the claims of critical realism, especially the tendency of critical realism to achieve correspondence with the world rather than participation in changing it. I read van Huyssteen's essay as an application of critical realism which tends toward correspondence in spite of his correct statement of the theory. I read Hefner's paper as an exposition of both claims and methods capable of conveying truth and genuine knowledge. As such, Hefner's paper illustrates an adequate application of the theory of critical realism and overcomes the suspicion suggested by Robbins.     

Transfer of matching performance in pigeons.

Three pigeons were given extensive training on three-key simultaneous matching problems using geometric-form and hue stimuli. After acquisition of matching, the birds were tested with pairs of stimuli involving one or both novel members. Matching during the test stimuli occurred less often than during the later stages of the acquisition phase, but more often than would occur if no transfer had taken place. Greater positive transfer was observed for problems that involved one, rather than two, novel stimuli. In the second phase of the experiment, previously trained birds were shifted to problems that required symbolic matching, i.e., the pigeons had to associate a particular center-key stimulus with a particular side-key stimulus. On each trial, one of two simuli was presented on the center key, and two other stimuli, different from those used on the center key, were displayed on the side keys. When the problem shift was introduced, correct responding was impaired, but remained considerably above chance level and quickly recovered in following sessions. The results were interpreted as favoring a stimulus-response-chaining account of matching behavior.