Ästhetische Befriedigung und Unbestimmtheitsreduktion

Zusammenfassung Vpn mußten unter standardisierten Bedingungen zweidimensionale Farbmuster herstellen, die ihrer Meinung nach ästhetisch maximal befriedigend, bzw. maximal unbefriedigend waren. Die beiden Gruppen von Bildern wurden untersucht, wobei sich eine Gruppe von ästhetisch befriedigenden und zwei Gruppen von ästhetisch unbefriedigenden Bildern zeigten. Eine weitere Analyse ergab, daß sich die ästhetisch befriedigenden Bilder von den ästhetisch unbefriedigenden statistisch darin unterscheiden, daß bei den ästhetisch befriedigenden Bildern die Farbelemente in hohem Maße zum Aufbau komplizierter und tiefer Hierarchien von Zeichen höherer Ordnung verwendet wurden, wohingegen bei den ästhetisch unbefriedigenden Mustern übergeordnete Konfigurationen entweder nur in einfacher Form und flachen Hierarchien auftreten (1. Gruppe) oder Zeichen höherer Ordnung gar nicht vorhanden sind (2. Gruppe). Aufgrund der empirischen Ergebnisse wird die Hypothese aufgestellt, daß ästhetische Befriedigung auf Unbestimmtheitsreduktion gegen Widerstand zurückgeführt werden kann. In einem nachfolgenden Experiment wurde diese Hypothese geprüft und bestätigt.

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Aesthetical appreciation and the reduction of uncertainty

Summary Subjects were asked to construct colored pictures which they considered to be aesthetically maximally pleasing or unpleasing. These two groups of pictures were analyzed and it was found that the aesthetically pleasing pictures showed a statistically significant increase in the number of higher order configurations of color elements and a greater hierarchical organization of such configurations. Furthermore, the higher order configurations of the aesthetically pleasing pictures were of a more complicated structure than the higher order configurations of the aesthetically unpleasing pictures. Considering these results, the hypothesis was raised that aesthetical appreciation may be based on the reduction of uncertainty against the resistance of a complicated system of ordering relations within a stimulus. This hypothesis was tested and verified in a subsequent experiment.

     

Process traces of binary choices: Evidence for selective and adaptive decision heuristics

While previous research has shown that human decision processes adjust to the characteristics of choice situations and task demands, the present study examined whether information processing would even adapt to the characteristics of an individual choice pair. By a process tracing method it was found that the amount of inspected information systematically depended upon the particular choice pair. In order to specify the selective and adaptive information processing, criterion-dependent choice models were introduced. These models postulate that information processing continues until the accumulated amount by which one alternative is better than the other reaches or exceeds a certain criterion. These models are strongly supported by the empirical data of the present study. Deviations between model predictions and observed data are explained in terms of fluctuating feature values of the choice alternatives.     

Extending the classical view of representation

Representation has always been a central part of models in cognitive science, but this idea has come under attack. Researchers advocating the alternative approaches of perceptual symbol systems, situated action, embodied cognition, and dynamical systems have argued against central assumptions of the classical representational approach to mind. We review the core assumptions of the representational view and these four suggested alternatives. We argue that representation should remain a core part of cognitive science, but that the insights from these alternative approaches must be incorporated into models of cognitive processing.     

Results of treatment of leg paraspasm cases following longitudinal frontal myelotomy

Follow-up examinations of 14 patients on whom longitudinal frontal myelotomy had been performed because of extreme leg spasms, showed consistently good results as far as spasm removal was concerned. Effective rehabilitation is possible only if the basic condition is stationary, if the operation is made at an early stage and followed by a comprehensive rehabilitation programme. For patients with an advancing condition the operation can alleviate the subjective discomfort felt, and it can make care easier.     

Dimensionality and the dynamics of human unstable equilibrium

Maintaining an unstable equilibrium requires that multiple joints be coordinated so that the center of mass is kept above the base of support. The authors' aim in the present study was to discover the underlying dynamics of local (foot, hip, or head) and global (center of mass) components involved in balance control and how those dynamics are affected by changes in the available information. Participants (N = 6) had to maintain their balance on an unstable platform. Using dimensional analyses (largest Lyapunov exponent and correlation dimension), the authors examined the active degrees of freedom involved in balance control. Results indicated a similarity in dimension between local (joints) and global (center of mass) components, between a fixed point and a limit cycle. The behavior of the center of mass was found to be more predictable than the behavior of its local constituents. In addition, the available visual information affected the predictability of the postural behavior, which suggests that vision is used in the stabilization of the low-dimensional dynamics underlying balance control.     

Cognitive style in attainment of an upside-down posture in water with and without vision

It is well known that adopting a posture required by the central nervous system takes into account a frame of reference. This frame of reference is built on sensory information and, more particularly, on vision, which is often considered to be the main input. The contribution of vision varies by participant and defines their cognitive style. This study investigates the contribution of visual information and cognitive style to postural strategy and, more precisely, to the construction of an upside-down posture in an underwater condition. Eight synchronized swimmers performed the Rod-and-Frame Test (RFT) to assess their cognitive style and practiced upside-down posture in water to measure their body inclination. The Rod-and-Frame Test scores did not distinguish the participants, as the results of the test showed that most of them were visual-field independent. However, in a closed-eyes condition, participants achieved a more precise vertical position than when using translucent goggles.