Automation and cognition in air traffic control: An empirical investigation

Several investigators have expressed concern that the imminent automation of air traffic control may have negative consequences on cognitive functioning, and ultimately on performance. We investigated these possibilities empirically by comparing normal, conventional air traffic control with an experimental condition designed to resemble an extreme version of automation. Overall, measures of performance were comparable between conditions. Most of the cognitive measures (attentional demands, visual search, recall of flights, recall of flight data) were not impaired by the automation analogue. Instead, two prospective measures (prospective memory, planning) showed improved performance. The prospective memory advantage is particularly surprising given that the automation-analogue group was unable to manipulate external memory aids. Possible reasons for the prospective memory advantage include a reduced workload, which allows the controller to get the necessary information in other ways, and a change in the nature of the task resulting from the “automation” of the strip management module.     

Individual differences in responses of untrained observers to stroboscopic apparent motion

Two large groups of inexperienced subjects (n = 208 and n = 50) and a small group of experienced subjects (n = 5) were tested using time-till-breakdown as a measure of long-range apparent motion across a range of temporal frequencies. One group of inexperienced subjects was retested after one week and demonstrated quite stable patterns of response. Large intersubject variability was observed in terms of the amount of motion seen, with most inexperienced subjects reporting very little apparent motion. A raster display produced a peak frequency 1 Hz higher than a standard tachistoscope display. The role of experience was also examined with a small group of inexperienced subjects (n = 8) tested once daily over five consecutive days. There was high intersubject variability and intrasubject consistency, demonstrating little influence of learning and experience. The results are discussed in terms of current ideas on the breakdown effect.     

Neuropsicología cognitiva: Consideraciones metodológicas

Resumen

El presente trabajo es teórico y pretende ofrecer una revisión metodológica en una rama de la psicología que está en pleno auge, la neuropsicología cognitiva. El trabajo consta de los siguientes puntos: definición de la neuropsicología cognitiva y delimitación del concepto frente a la neuropsicología tradicional; relaciones entre la neuropsicología y la psicología cognitivas; métodos actuales en neuropsicología cognitiva, esto es, descripción y consideraciones de las distintas aproximaciones metodológicas; razones para el estudio de caso único, el método de la coherencia con el paciente, el método de la disociación en base a la hipótesis de la modularidad, el método de las constelaciones de síntomas y, por último, los requisitos necesarios para el sistemático estudio de caso único; críticas y conclusiones.     

Dependencia-Independencia de Campo y Diferenciación Hemisférica en tareas de escucha dicótica

Resumen

En una muestra de 60 estudiantes voluntarios, se ha examinado la relación existente entre el estilo perceptivo «dependencia-independencia de campo» medido a través del R FT, EFT y GEFT y el grado de diferenciación hemisférica auditiva operativizado mediante dos tareas de escucha dicótica, una verbal y otra musical. Los resultados revelan un procesamiento claramente lateralizado en los sujetos independientes de campo frente a una bilateralización en los dependientes de campo.     

Functions of External Cues in Prospective Memory

Abstract

A simulation of an air traffic control task was the setting for an investigation of the functions of external cues in prospective memory. External cues can support the triggering of an action or memory for the content of the action. We focused on memory for the content, and manipulated the temporal characteristics of the external cue to disentangle two possible functions the cue can support: (1) an external cue visible during a retention interval could support rehearsal of the to-be-performed action; (2) an external cue visible at the end of a retention interval could support retrieval of the to-be-performed action. Two experiments were conducted that converge on the same conclusion: the primary function of an external cue is to support retrieval. Implications for the design of a computer interface to present prospective cues are discussed.     

Interpretation,Reasons, and Facts

Donald Davidson argues that his interpretivist approach to meaning shows that accounting for the intentionality and objectivity of thought does not require an appeal, as John McDowell has urged it does, to a specifically rational relation between mind and world. Moreover, Davidson claims that the idea of such a relation is unintelligible. This paper takes issue with these claims. It shows, first, that interpretivism, contra Davidson's express view, does not depend essentially upon an appeal to a causal relation between events in the world and speakers' beliefs. Second, it shows that interpretivism essentially, if implicitly, depends upon interpreters' appealing to facts taken in in perception, and that such facts are suited to provide a rational connection between mind and world. The paper then argues that none of Davidson's legitimate epistemological arguments tell against the idea that experience, in the form of the propositional contents of perception, can play a role in doxastic economy. Finally, it argues that granting experience such a role is consistent with Davidson's coherentist slogan that nothing can count as a reason for holding a belief except another belief.     

Client perceptions of effective and ineffective therapeutic alliances during treatment for stuttering

The treatment components that contribute to and account for successful therapeutic outcomes for people who stutter are not well understood and are debated by many. The purpose of this phenomenological study was to describe in detail the underlying factors that contribute to a successful or unsuccessful therapeutic interaction between clients and their clinicians. Twenty-eight participants, 19 men and 9 women, who had received from 6 months to more than 12 years of therapy for stuttering were studied. The participants were asked to consider their experience with one or more speech-language pathologists with whom they had received fluency therapy and to describe the characteristics that made that individual effective or ineffective in promoting successful change in their ability to communicate. Analysis of these data resulted in 15 primary categories. Finally, the essential structure of an effective and ineffective therapeutic interaction was described. Results highlighted the importance for effective therapy of understanding the stuttering experience, forming a positive client-clinician, alliance, and being knowledgeable about stuttering and its treatment. Educational objectives: The reader will be able to: (1) describe, from the perspective of a select group of adults who stutter, the themes associated with an effective therapeutic interaction, (2) describe, from the perspective of a select group of adults who stutter, the themes associated with an ineffective therapeutic interaction, and (3) describe the ways in which an effective or ineffective therapeutic interaction could impact a person who stutters.     

Adolescent alcohol use in context: the role of parents and peers among African American and European American youth

African American youth are less likely to use alcohol than their European American counterparts; however, the greater consequences of use for African American youth highlight the need for greater research attention to this group. Two social contexts that have been linked with adolescent alcohol use are parents and peers, yet these studies have rarely included African American youth or failed to examine potential racial differences. This study examined the main and interactive effects of parents and peers, as well as the moderating role of race on alcohol use, in African American and European American rural adolescents (n=71) identified as at high-risk for alcohol use. Contrary to study hypotheses, however, parents were not a more robust moderator for African American than European American youth. Clinical implications for prevention and intervention programming for both African American and European American youth are discussed.     

Explain this: explaining childhood events inflates confidence for those events

To examine whether explaining hypothetical childhood events makes people more confident that the events really happened, we used a method similar to the imagination inflation procedure devised by Garry, Manning, Loftus, and Sherman (1996). First, participants rated how confident they were that a list of events occurred in their childhood. Two weeks later, participants explained how four of the eight target events could have happened to them before the age of 10. Finally, participants made confidence ratings about the list of childhood events for a second time. Participants were more confident that the explained hypothetical childhood events really did happen compared to events they did not explain. We discuss both theoretical and practical implications of these results. Copyright © 2004 John Wiley & Sons, Ltd.     

Documenting changes in adult speakers' locus of causality during stuttering treatment using Origin and Pawn scaling

The concepts of locus of control and locus of causality are similar and refer to the degree to which a person perceives daily occurrences to be a consequence of his or her own behavior. Locus of control is considered to be a unidimensional construct indicating an inverse relationship between the polls of internality and externality. The locus of control is generally determined by using questionnaires with a limited number of items. Locus of causality is considered to be a two-dimensional construct where Origin and Pawn values, which are similar to internality and externality, respectively, are not necessarily inversely related. Locus of causality is determined by content analysis of freely spoken or written narratives. In the current study Origin and Pawn scores were obtained from twenty adults prior to and following a three-week intensive stuttering treatment program. Brief narratives written by the participants were analyzed to obtain Origin and Pawn values. These scores were compared with traditional measures of therapeutic outcome (Locus of Control, OASES, PSI, percentage of syllables stuttered). Results indicated statistically significant increases in pre- to post-treatment Origin scores (p = .001; Cohen's d = 1.44) and statistically significant decreases in pre- to post-treatment Pawn scores (p = .003; Cohen's d = 1.11). Origin and Pawn scores showed significant relationships with other measures of stuttering, indicating concurrent and construct validity. Origin and Pawn scaling procedures appear to provide a valid, sensitive, and nonreactive indicator of the speaker's locus of causality and ability to develop an autonomous and agentic lifestyle.Educational objectives: After reading this article, the readers will be able to: (1) distinguish between the concepts of locus of control and locus of causality, (2) describe the characteristics of individuals behaving as an Origin and a Pawn, (3) differentiate patterns of change for Origin and Pawn scores prior to and following treatment, and (4) describe the clinical advantages using Origin and Pawn scaling procedures for individuals who stutter.