The invariance of sentence performance structures across language modality

Native users of American Sign Language were asked to manipulate sentences in four different ways: sign them at slow rate, parse them, make relatedness judgments of pairs of signs taken from each sentence, and recall the sentences. The data obtained from these four tasks (pause durations, parsing values, indices of relatedness and probe latencies) were used to construct hierarchical performance structures for each of the sentences. The resulting structures were highly similar across tasks; that is, performance structures are not task specific. The four measures at each sign boundary in each sentence were well predicted by a performance model, elaborated by Grosjean, Grosjean, and Lane for speech, that combines a parsing measure with a symmetry measure. Thus performance structures appear to be founded in the processing of language, be it visual or oral, and not in the properties of any particular communication modality.     

Preventing Reading Difficulties: Reading Between the Lines

Preventing Reading Difficulties in Young Children, the report of the Committee on the Prevention of Reading Difficulties in Young Children sponsored by the National Research Council, provides a comprehensive examination of the reading process and of reading instruction in the early grades. Although lacking in several areas, such as the development of fluency, appropriate practices for students with learning disabilities, and recommendations for teacher education, the report is based on sound research and is likely to have a substantial impact on the field of reading.     

The Narcissistic Injury and Psychopathology of Migration: The Case of a Nicaraguan Man

Cultural and ethnic issues commonly surface as important therapeutic themes among many minority patients. Identity formation, self-concept, perception, and the effects of migration on the aetiology of psychiatric symptomatology are reviewed. Trauma resulting from migration, stress, and prolonged affect-laden situations in the precipitation and onset of physical disease and illness is discussed. A clinical presentation of a 68-year-old Nicaraguan man is presented to highlight the aforementioned issues, i.e., traumatization, the development of psychopathology, and the onset of physical illness as a result of forced migration.     

Auditory attention switching: a developmental study

The developmental course of the ability to rapidly allocate attention was studied using a dichotic listening task with 8-year old, 11-year old and college age subjects. In this task, subjects were instructed to listen to one ear for predescribed targets and then were later signaled (on some trials) to switch their attention to the other ear. Reorientation was assessed by comparing the pattern of subjects' omission and intrusion errors on trials following a command to switch ears with the pattern of errors on no-switch trials. Older subjects were better able to reallocate their attention in accordance with task demands, with the greatest gains in performance occurring between ages 8 and 11. This developmental change appears to be generally continuous and quantitative in nature. Since successful performance of this task requires flexibility in subjects' ability to control their focus of attention, these results support the hypothesis that the basis of the developmental improvement in the ability to ignore irrelevant information is linked to the ability to use active attentional strategies.     

Psychoanalytic perspectives on the treatment of early adolescent girls

Psychotherapy of girls between the ages of 10and 14 years presents specific difficulties which originate in the rapid physiological changes and intrapsychic demands for psychological differentiation, causing considerable anxiety and inner turmoil. The introduction of therapeutic intervention at this juncture is discussed along with its risks, benefits, limitations, possibilities, and implications for psychoanalytic theory.     

Autoerotism in patients with borderline personality organization: A case of wristcutting and bulimia

This paper is an investigation of some manifestations of autoerotism in patients with borderline personality organization. Symptoms involving somatic sensations and experiences are prominent in Kernberg's list of presumptive diagnostic elements for borderline conditions. It is postulated here that many such symptoms are autoerotic attempts to represent and resolve the difficulties around primitive aggression and associated lack of self-other differentiation that are central to borderline pathology. This is illustrated using case material from the treatment of a young woman who presented with symptoms of wristcutting and bulimia.Early versions of this paper were presented at the Eleventh Annual Symposium of the New York Center for Psychoanalytic Training in April, 1986, and the Mid-Winter Meeting of the Division of Psychoanalysis, American Psychological Association, April, 1987.     

Locus and persistence of capacity limitations in visual information processing

Although there is considerable evidence that stimuli such as digits and letters are extensively processed in parallel and without capacity limitations, recent data suggest that only the features of stimuli are processed in parallel. In an attempt to reconcile this discrepancy, we used the simultaneous/successive detection paradigm with stimuli from experiments indicating parallel processing and with stimuli from experiments indicating that only features can be processed in parallel. In Experiment 1, large differences between simultaneous and successive presentations were obtained with an R target among P and Q distractors and among P and B distractors, but not with digit targets among letter distractors. As predicted by the feature integration theory of attention, false-alarm rates in the simultaneous condition were much higher than in the successive condition with the R/PQ stimuli. In Experiment 2, the possibility that attention is required for any difficult discrimination was ruled out as an explanation of the discrepancy between the digit/letter results and the R/PQ and R/PB results. Experiment 3A replicated the R/PQ and R/PB results of Experiment 1, and Experiment 3B extended these findings to a new set of stimuli. In Experiment 4, we found that large amounts of consistent practice did not generally eliminate capacity limitations. From this series of experiments we strongly conclude that the notion of capacity-free letter perception has limited generality.     

On the discriminative control of concurrent responses: the relations among response frequency, latency, and topography in auditory generalization

Human subjects were used in a study of auditory generalization following multiple-response discrimination training. The relations observed among stimulus intensity, response probability, and response latency were invariant with respect to whether the two vocal responses conditioned were topographically discrete, as in one experiment, or topographically continuous, as in another. The major findings were:

1. The probabilities associated with a specific response were maximal over several stimulus values at the extreme ends of the continuum, then dropped sharply at stimuli intermediate to the initial S^D's as the probability of the alternative response increased.

2. Overall response latency was inversely related to the relative frequency of the two responses at each stimulus value. When the two responses were most nearly equal in probability, latencies were maximal; when one response had close to unit or zero probability, latencies were minimal.

3. Analysis of the latencies of the two responses, taken separately, revealed: (a) an increase in latency as the difference between the test stimulus and the initial S^D increased; (b) a sharp discontinuity in the latency gradient and reversal in trend at intermediate stimulus intensities; and (c) at a given stimulus value, latencies associated with the stochastically dominant response were consistently shorter than those of the nondominant response.

4. No changes in response topography (fundamental frequency) were correlated with the characteristic changes in probability and latency during stimulus generalization.

     

Verbal self-reports of emergent relations in a stimulus equivalence procedure.

During a preliminary training phase, college students were taught to categorize each of their responses accurately in a conditional discrimination task as either correct or incorrect. Next, in the absence of self-reports, subjects acquired conditional discriminations (involving novel stimuli) prerequisite to the formation of two four-member equivalence classes. The self-report procedure was reinstated during probe sessions that tested for untrained relations indicative of equivalence class formation. Interspersed trials involving trained relations provided a positive control, and trials with no class-consistent comparison provided a negative control. Eight of 10 subjects demonstrated equivalence class formation; all accurately reported their performance on trained relations and on trials with no class-consistent comparison. Subjects also reported their performance on most untrained (emergent) relations accurately, but in several instances self-reports indicated failure or uncertainty despite nearly perfect emergent-relations performance. These inconsistencies add to a growing body of literature that suggests there are differences between individual types of emergent relations. We suggest that the present procedure may be helpful in understanding these differences and other equivalence-related effects.