Haptic orientation perception benefits from visual experience: evidence from early-blind, late-blind, and sighted people

Early-blind, late-blind, and blindfolded sighted participants were presented with two haptic allocentric spatial tasks: a parallel-setting task, in an immediate and a 10-sec delay condition, and a task in which the orientation of a single bar was judged verbally. With respect to deviation size, the data suggest that mental visual processing filled a beneficial role in both tasks. In the parallel-setting task, the early blind performed more variably and showed no improvement with delay, whereas the late blind did improve, but less than the sighted did. In the verbal judgment task, both early- and late-blind participants displayed larger deviations than the sighted controls. Differences between the groups were absent or much weaker with respect to the haptic oblique effect, a finding that reinforces the view that this effect is not of visual origin. The role of visual processing mechanisms and visual experience in haptic spatial tasks is discussed.     

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Die Psychotherapie -     

Pappus in optical space

Optical space differs from physical space. The structure of optical space has generally been assumed to be metrical. In contradistinction, we do not assume any metric, but only incidence relations (i.e., we assume that optical points and lines exist and that two points define a unique line, and two lines a unique point). (The incidence relations have generally been assumed implicitly by earlier authors.) The condition that makes such anincidence structure into a projective space is the Pappus condition. The Pappus condition describes a projective relation between three collinear triples of points, whose validity can— in principle—be verified empirically. The Pappus condition is a necessary condition for optical space to be a homogeneous space (Lobatchevski hyperbolic or Riemann elliptic space) as assumed by, for example, the well-known Luneburg theory. We test the Pappus condition in a full-cue situation (open field, broad daylight, distances of up to 20 m, visual fields of up to 160° diameter). We found that although optical space is definitely not veridical, even under full-cue conditions, violations of the Pappus condition are the exception. Apparently optical space is not totally different from a homogeneous space, although it is in no way close to Euclidean.     

Julius Springer Psychotherapiepreis

Ohne Zusammenfassung Prof. Dr. med. M. Cierpka Universit?t Heidelberg, Abteilung für Psychosomatische Kooperationsforschung u. Familientherapie, Bergheimerstra?e 54, 69115 Heidelberg, E-Mail: Manfred_Cierpka@med.uni-heidelberg.de     

Die Psychotherapeutenausbildung aus Sicht der Teilnehmer

Background

A survey was performed to assess the current situation in education and to identify critical issues 10 years after the inception of the German law regulating the education of psychological psychotherapists and child and adolescent psychotherapists. The study reports the results of a nationwide survey of German psychological psychotherapists and child and adolescent psychotherapists currently in training. The aim of the survey was to evaluate the individual sections of training, desired alterations and structural and financial conditions.

Methods

All trainees were contacted via the training institutes and the umbrella organizations. A total of 3,223 trainees participated and answered questions mainly using an online questionnaire.

Results

Most respondents practiced their training part-time and in most cases the trainees thought that the training would last longer than initially expected. The practical training was rated most poorly, whereas practical education and individual supervision were rated as most useful. The survey revealed deficits concerning the evaluation of the quality of several components of the training.

Conclusions

From the perspective of the trainees there is a necessity to modify the financial conditions of the training. This result has been considered in the recommendations of a research expertise on psychotherapy training and should stimulate further research.     

Consumption experience of impulse buying in Indonesia: Emotional arousal and hedonistic considerations

Two studies focused on impulsive purchase experiences. Feelings, considerations and ratings of purchase impulsiveness were measured with respect to a recent purchase by means of interviews immediately after the purchase in the shopping environment (Study 1) and through shopping diaries (Study 2). Feelings and considerations were measured by open-ended questions, which yielded a wide range of responses in each category. These responses were subjected to multidimensional scaling. The results demonstrated a high versus low arousal dimension of positive emotions and a hedonic versus utilitarian dimension of considerations. Emotions and considerations were predicted by general impulse-buying tendency, and were related to the experience of impulsive purchases. In Study 2, impulse buying tendency was measured 2 months earlier. Structural equation modelling confirmed a model in which general impulse buying tendency predicts the feelings and considerations in the purchase environment, which in turn, determine the experience of making an impulsive purchase.     

Psychological and demographic correlates of career patterns

Recent years have witnessed a growing diversity of career patterns, resulting from the relative decline of stable employment. In the present study of 1368 employed and self-employed German adults career pattern diversity was assessed using nine pictograms. The goal was to identify psychological and demographic correlates of these patterns and to answer the question of whether they differed for participants from the former (communist) East and the capitalist West. Findings indicated that upward-pointing career patterns still connected to extrinsic criteria such as income and job security. With regard to psychological correlates, upward patterns connected to lower work-related demands imposed by social change and a higher level of personal and social resources. Only in the West, upward patterns related to male gender and high education, reflecting more traditional access to upwardly mobile career opportunities.     

Salient features in 3-D haptic shape perception

Shape is an important cue for recognizing an object by touch. Several features, such as edges, curvature, surface area, and aspect ratio, are associated with 3-D shape. To investigate the saliency of 3-D shape features, we developed a haptic search task. The target and distractor items consisted of shapes (cube, sphere, tetrahedron, cylinder, and ellipsoid) that differed in several of these features. Exploratory movements were left as unconstrained as possible. Our results show that this type of haptic search task can be performed very efficiently (25 msec/item) and that edges and vertices are the most salient features. Furthermore, very salient local features, such as edges, can also be perceived through enclosure, an exploratory procedure usually associated with global shape. Since the subjects had to answer as quickly as possible, this suggests that speed may be a factor in selecting the appropriate exploratory procedure.     

Haptic identification of curved surfaces

In two experiments, the active haptic identification of three-dimensional mathematically welldefined objects is investigated. The objects, quadric surfaces, are defined in terms of the shape index, a quantity describing the shape, and curvedness, a quantity describing overall curvature. Both shape index and curvedness are found to have a significant influence on haptic shape identification . Concave surfaces lead to a larger spread in responses than convex ones. Hyperbolic surfaces show a slight tendency to be identified with more difficulty than elliptic ones. Surfaces with a high curvedness are identified more easily than those with a low curvedness. Results from experiments with constant and with random curvedness are indistinguishable . It is concluded that shape index and curvedness are psychophysically not confounded.     

Studien über Psychotherapeutinnen und Psychotherapeuten

Zusammenfassung Psychotherapie ist in den industrialisierten L?ndern ein fester Bestandteil der modernen Heilkunst geworden. In diesen Gesellschaften übernehmen die Psychotherapeutinnen und Psychotherapeuten wichtige soziale und kulturelle Aufgaben. Zun?chst wird deshalb der Kontext dargestellt, in dem das Wissen über Psychotherapie als Methode akkumuliert wurde. Eine Betrachtung der impliziten, jedoch widersprüchlichen, Perspektiven, die offenbar die Forscher über Psychotherapeuten zu haben scheinen, ist zun?chst notwendig, um die Art und Weise der Fragestellungen in den Studien zu beleuchten. Nach einer Reflexion der gesellschaftspolitischen Aufgaben der Psychotherapie geht es dann in diesem übersichtsartikel darum, die unterschiedlichen Studien über die Psychotherapeutinnen und Psychotherapeuten und ihren Einflu? auf die Behandlung des Patienten zusammenzufassen. Der rote Faden ergibt sich aus der Fragestellung, welches forschungsbasierte Wissen über Psychotherapeuten auf welche Weise klinisch genutzt werden kann.