The effect of exposure duration on visual character identification in single, whole, and partial report

The psychometric function of single-letter identification is typically described as a function of stimulus intensity. However, the effect of stimulus exposure duration on letter identification remains poorly described. This is surprising because the effect of exposure duration has played a central role in modeling performance in whole and partial report (Shibuya & Bundesen, 1988). Therefore, we experimentally investigated visual letter identification as a function of exposure duration. We compared the exponential, the gamma, and the Weibull psychometric functions, all with a temporal offset included, as well as the ex-Gaussian, the log-logistic, and finally the squared-logistic, which is a psychometric function that to our knowledge has not been described before. The log-logistic and the squared-logistic psychometric function fit well to experimental data. Also, we conducted an experiment to test the ability of the psychometric functions to fit single-letter identification data, at different stimulus contrast levels; also here the same psychometric functions prevailed. Finally, after insertion into Bundesen's Theory of Visual Attention (Bundesen, 1990), the same psychometric functions enable closer fits to data from a previous whole and partial report experiment.     

Development through interruptions and reparations – A case study of a dual challenging psychotherapy

The aim of this study was to understand how relational difficulties in psychotherapy may be handled to represent possibilities for change. Temporary interruptions and subsequent reestablishment of contact were chosen as the strategic focus in one severely challenging case of long term psychodynamic psychotherapy where outcome was known to be good. Interruptions and reestablishments were conceptualised by how the informants gave meaning to them. The choice of focus represented a strategic selection of events in the course of therapy where the regulation of the alliance by the therapist as well as by the patient was at stake. A detailed case record was studied and interviews with patient and therapist were conducted. A hermeneutical-phenomenological approach was used to analyse the material. The narrative dimension was important in structuring and interpreting the data. It was shown how important relational difficulties, such as mutual incompatible expectations and demands was handled both on a structural and interpersonal level, and some important steps and hallmarks of the healing process was identified. Close inspection of the course of events in psychotherapies is seen as a promising method for bringing a better understanding of how change processes unfold.     

Age Influences on Multi-Dimensional Set Switching

Using a task switching paradigm, we investigated age effects on switch costs as a function of the number of sets to be switched. In Experiment 1, younger and older subjects determined a color or shape of an object presented on the computer screen, responding either by moving the joystick or by pressing a button on the joystick. The switch costs were assessed with differences between switch trials (task-set switch, response-set switch, and double switch) and non-switch trials. Contrary to the prediction that age would negatively influence performance on the double switch trials, age effects on switch costs were observed only for the single switch trials (i.e., response-set switch condition). Additionally, both younger and older adults were capable of preparing for task and response-set switches in parallel. In Experiment 2, we manipulated the time available to prepare for a task and response-set switch. Both younger and older adults were able to utilize extra time to reduce switch costs. Furthermore, the age deficit found in Experiment 1 for response-set switching was eliminated in the second experiment in which preparation for task and response-set switching was temporally decoupled. The data are discussed in terms of task component coordination across the adult lifespan.     

“Heaven and Hell on Earth” A critical discourse analysis of religious terms in Norwegian autobiographies describing personal experience of mental health problems

This article explores the use of religious terms in six Norwegian autobiographies written between 1925 and 2005 by people who themselves have been patients in the mental health services. Through a critical discourse analysis, we discuss the functions of religious discourse in the texts and its position in contrast to the medical discourse predominant in today's mental health services. It was found that religious (predominantly Christian) terms were used to varying degrees in all autobiographies as a means to capture the immensity and inherent ambivalence characteristic of mental health problems. Despite the “medical turn” in professional mental health discourse, there is no clear evidence of a decrease in the use of religious terms from the oldest to the most recent text. We propose that professional mental health workers to a larger extent take into account the religious dimension in therapy, and reflect on its larger historical and sociocultural context.     

Effects of changes in size, speed, and distance on the perception of curved 3-D trajectories

Previous research on the perception of 3-D object motion has considered time to collision, time to passage, collision detection, and judgments of speed and direction of motion but has not directly studied the perception of the overall shape of the motion path. We examined the perception of the magnitude of curvature and sign of curvature of the motion path for objects moving at eye level in a horizontal plane parallel to the line of sight. We considered two sources of information for the perception of motion trajectories: changes in angular size and changes in angular speed. Three experiments examined judgments of relative curvature for objects moving at different distances. At the closest distance studied, accuracy was high with size information alone but near chance with speed information alone. At the greatest distance, accuracy with size information alone decreased sharply, but accuracy for displays with both size and speed information remained high. We found similar results in two experiments with judgments of sign of curvature. Accuracy was higher for displays with both size and speed information than with size information alone, even when the speed information was based on parallel projections and was not informative about sign of curvature. For both magnitude of curvature and sign of curvature judgments, information indicating that the trajectory was curved increased accuracy, even when this information was not directly relevant to the required judgment.     

Differences in cognitive control in children and adolescents with combined and inattentive subtypes of ADHD

The aim of the present study was to investigate the ability of children with attention deficit/hyperactivity disorder-combined subtype (ADHD-C) and predominantly inattentive subtype (ADHD-PI) to direct their attention and to exert cognitive control in a forced attention dichotic listening (DL) task. Twenty-nine, medication-naive participants with ADHD-C, 42 with ADHD-PI, and 40 matched healthy controls (HC) between 9 and 16 years were assessed. In the DL task, two different auditory stimuli (syllables) are presented simultaneously, one in each ear. The participants are asked to report the syllable they hear on each trial with no instruction on focus of attention or to explicitly focus attention and to report either the right- or left-ear syllable. The DL procedure is presumed to reflect different cognitive processes: perception (nonforced condition/NF), attention (forced-right condition/FR), and cognitive control (forced-left condition/FL). As expected, all three groups had normal perception and attention. The children and adolescents with ADHD-PI showed a significant right-ear advantage also during the FL condition, while the children and adolescents in the ADHD-C group showed a no-ear advantage and the HC showed a significant left-ear advantage in the FL condition. This suggests that the ADHD subtypes differ in degree of cognitive control impairment. Our results may have implications for further conceptualization, diagnostics, and treatment of ADHD subtypes.     

Psychodynamic milieu-therapy and changes in personality – what is the connection? 1

This article refers to the results of a prospective effect evaluation study of three psychodynamic milieu-therapeutic institutions for children, which included cognitive and projective testing. After introducing milieu-therapy and explaining its roots in psychoanalytic and developmental thinking, the specific results of the research evaluation are outlined. It is found that environmental therapy is very efficient on the level of ego-functioning, but concern is expressed in regards to the relational abilities of the children. These findings are discussed in relation to the practical, organisational and theoretical principles of the actual treatment in order to find ways to improve our understanding of how milieu-therapy works and how it can be improved. Finally, we discuss the ways in which recent theoretical and empiric research emphasising the importance of the affect regulation and mentalisation can contribute to the psychoanalytic theories in the milieu-therapy.     

Luck Egalitarianism,Universal Health Care,and Non-Responsibility-Based Reasons for Responsibilization

In recent literature, there has been much debate about whether and how luck egalitarianism, given its focus on personal responsibility, can justify universal health care. In this paper we argue that, whether or not this is so, and in fact whether or not egalitarianism should be sensitive to responsibility at all, the question of personal responsibilization for health is not settled. This is the case because whether or not individuals are responsible for their own health condition is not all that is relevant when considering whether we should somehow hold them responsible for their own health condition, e.g. cost-wise. There may also be efficiency-based reasons to hold them responsible, and there may even be egalitarian reasons. Defining universal health care as an insurance system where everyone’s deductible and premium is 0, we will argue that efficiency-based reasons for cost-responsibilization are not convincing, but that there are egalitarian reasons for cost-responsibilization. Luck egalitarianism, therefore, cannot, at least not on its own term, justify universal health care.