Individual Differences in Diving: Intelligence,Personality, and Underwater Adaptation

Diving is an activity that is carried out in an extreme environment with extraordinary psychophysical demands. It requires the divers to undergo an adaptive process in order to survive, to be able to take advantage of their capabilities, and to achieve an efficient performance. In this ex post facto study, data from a sample of military personnel participating in scuba diving courses (N = 649) were analyzed. Our aim was to verify the role of individual differences in the adaptation to an extreme and hostile environment. The results indicate the existence of psychological variables that differentiate between divers and the general population, those who pass or fail the diving course, and between groups of divers who obtain differential levels of performance in underwater tasks. These findings support that dispositional characteristics have utility for the identification of suitable personnel for professional diving.     

Successive negative contrast in one-way avoidance learning in rats

In three experiments, successive negative contrast was examined in one-way avoidance learning. Reward magnitude in first (pre-shift) and second (post-shift) phases was manipulated by time spent in the safe compartment. Experiment 1 demonstrated that when time in the danger compartment was held constant, a group shifted from a large reward--30 sec spent in the safe compartment--to a small reward--1 sec--showed poor performance and longer response latency than a group conditioned with the small reward in both phases. Experiment 2 replicated this effect with a less intense shock and also demonstrated that a group shifted from large to small reward performed more poorly than a group exposed to large reward--30 sec--in both phases. Finally, Experiment 3 showed that changes in intertrial interval, defined as total time spent in the safe compartment and the danger compartment before the onset of the warning signal, were not responsible for this contrast effect. These results suggest that time spent in a safe place can act as appetitive incentive during one-way avoidance learning.     

Dependency in consumer media relations: an application to the case of teleshopping

• This paper analyses the teleshopping issue in terms of the Media Dependency Theory. The objective is to verify whether dependency relations between television shoppers and the television medium and television shopping are key variables to explain watching and buying behaviour. A model is proposed that integrates the dependency‐viewing‐purchase relation, tested on a sample of Spanish television shoppers. The results of the study confirm the direct relationship between the antecedents of dependency, dependency and future intentions of behaviour.

Copyright © 2006 John Wiley & Sons, Ltd.     

A new model of sportive cooperation and its evaluation by means a questionnaire

We present in this paper the sportive cooperation as a theoretical framework for the teams' dynamics, and as an alternative to others theories, specially the sportive cohesion. This theory has a double basis: 1) The rational and utilitarist decision taking upon the personal cooperation or not, with the team's goal, based on the internal teammates interaction, and the environmental stimuli; and 2) A personal, and more stable, disposition to cooperate, despite the possibility of obtain any counterparts for this behavior. From this framework, we have build--in a three phase process--a questionnaire addressed to evaluate the sportive cooperation. The final version--composed of 15 items with standard psychometric propierties--shows two kinds of factors. First, we have two dispositional, traitlike, factors: The Conditional cooperation, and the Unconditional cooperation. Second, we have three situational factors: the Cooperation with the Coach, with the teammates, and the Cooperation outside the game and the training. Lastly, we discuss the maining of this theory respect to the sportive team's dynamics, and its relevance for the applied psychology, both for the evaluation and the interventions on the teams.     

The Many Senses of Imagination and the Manifestation of Fiction: A View from Husserl’s Phenomenology of Phantasy

The systematic importance of the eidetic account of phantasy for Husserlian phenomenology in general is undisputed, but whether this account can be relevant for Aesthetics has often been put into question. In this paper I argue that Husserl’s rich phenomenology of phantasy, and in particular his account of perceptual phantasy, can nevertheless significantly enhance our understanding of how we recognize and imaginatively participate in artistic fictions. Moreover, I show how Husserl’s peculiar formulation of a non-intuitive phantasy at stake in artistic representation anticipates some uses of the imagination in Aesthetics suggested by Ernst Gombrich and Kendall Walton.     

El tiempo de tránsito del pulso: un índice de cambios en la presión arterial

Resumen

Los propósitos de este trabajo fueron: primero, evaluar el grado con el cual el tiempo de tránsito del pulso (TTP) covería con la presión sistólica; segundo, estimar la influencia del período de preeyección sobre el TTP; tercero, probar un índice de reactividad en la presión arterial, y cuarto, estudiar el decremento en la actividad cardiovascular a lo largo del tiempo.

Los resultados revelan una alta correlación entre el TTP y la presión sistólica (¯=—. 866), aunque el TTP probablemente no sólo refleje cambios de la presión arterial, sino también del período de preeyección.

La respuesta ante una tarea de aritmética mental, en contraste con una linea base de relajación, se mostró como un buen índice de la reactividad en la presión sistólica.

El cuarto propósito no pudo realizarse por no producirse el decremento esperado en la actividad cardiovascular.     

Diagonalisation and Church's Thesis: Kleene's Homework

In this paper we will discuss the active part played by certain diagonal arguments in the genesis of computability theory.

These enigmatical words by Kleene were our point of departure:

When Church proposed this thesis, I sat down to disprove it by diagonalizing out of the class of the λ–definable functions. But, quickly realizing that the diagonalization cannot be done effectively, I became overnight a supporter of the thesis. (1981, p. 59)     

Facilitation and interference of behavioral responses by task-irrelevant affect-laden stimuli

Emotional interference on behavior is commonly observed when task-irrelevant negative stimuli appear before behavioral targets. One explanation postulates that affect-laden stimuli readily capture attention, interfering with the processing of the upcoming target. Emotional stimuli might also preactivate motor programs incompatible with the demanded response. Using a cued go/no-go procedure we showed that task-irrelevant unpleasant stimuli cause interference or facilitation depending on their onset asynchrony relative to the target. We observed interference with short (200 ms) stimulus-target asynchronies and facilitation for longer ones (600 ms), both for key press (Experiment 1) and key release (Experiment 2) responses. The interference effect is compatible with an attentional explanation, but the behavioral facilitation is hard to accommodate within either attentional or motor accounts. This interference-facilitation pattern can be explained assuming that once the attentional effect subsides, emotional processing may enhance the perceptual processing of the stimuli, or lower the decision threshold, thereby facilitating the response selection process.     

the relationship between pain and coping styles among hiv-positive men and women

Abstract

Pain in HIV/AIDS patients is associated with compromised quality of life and emotional adjustment. Although previous findings support a relationship between coping styles and subjective pain for various groups of chronically-ill persons, little research has examined the associations between coping and pain in HIV-positive or AIDS patients. The purpose of this study was to explore the relationship between pain and coping styles among 105 HIV-positive participants (32 women and 73 men) in a randomized clinical trial designed to examine the effect of group psychotherapy on quality of life and health behavior. Participants completed the Brief COPE, the pain scale from the Medical Outcomes Study-HIV, and a demographic and medical questionnaire. Multiple regression analysis, with pain as the dependent variable, showed that participants who reported coping through denial reported greater pain severity (p < 0.0001). These results suggest that denial as a coping strategy appears to be signficantly associated with pain for persons with HIV/AIDS. However, further research is necessary to determine the causal relationship between pain and coping through denial. These findings also point to the possibility of psychological intervention in order to modify maladaptive coping styles and to ameliorate pain in this population.