SILHOUETTE EFFECTS IN NIGHT DRIVING

JOHANSSON, G. & RUMAR, K. Silhouette effects in night driving. Scand. J. Psychol. , 1971, 12, 80–89.–In order to investigate within what areas on the road silhouettes, as framed by the light from a meeting car, can be of help to the driver, a series of experiments has been performed. The experiments employed two stationary opposing cars standing at given distances from each other, these distances (100–400 m) being determined by pre-experiments. On the area between the cars "iso-silhouette" curves were measured using a special method for a number of silhouette relevant conditions. Factors favouring silhouette effects were found to be: narrow road, short distance between the cars, high road surface reflectance, inner bend, the driver's eyes being high above the road, particles in the atmosphere, large spread of the meeting headlight beams.     

Liquid-specific stimulus properties can be used for haptic perception of the amount of liquid in a vessel put in motion

We investigated whether people can use haptic liquid-specific information made available by shaking the vessel containing the liquid. In experiment 1 we studied to what extent people can discriminate between liquid and solid substances and determine the amount of substance in the shaken vessel, as well as the effects of exploratory procedures on these abilities. Exploratory procedures including horizontal shaking of the vessel produced accurate identification of the content and more precise judgments for a liquid than for a solid, but vertical lifting produced an overestimation of the amount of liquid. In experiment 2 we demonstrated that people can discriminate between the amount of liquid and the amount of solid in the same vessel. Three theories of what liquid-specific stimulus properties are picked up by shaking the vessel are preliminarily examined.     

Peer groups and substance use: examining the direct and interactive effect of leisure activity

This paper explores the relationships among adolescent leisure activities, peer behavior, and substance use. We suggest that peer group interaction can have a differential effect on adolescent deviant behavior depending on the type of leisure pattern adolescents engage in. We analyze data from a representative national sample of Icelandic adolescents, exploring the variations in the use of alcohol and illegal drugs among three different patterns of leisure activity, controlling for parental ties and school commitment. The findings show that alcohol and substance use varies significantly across the three leisure patterns. Moreover, it was found that the well-known relationship between adolescent substance use and having substance-using friends is significantly contingent on the type of leisure pattern. Our findings suggest that it is important to take into account different peer leisure activities in order to understand adolescent substance use. Finally, we discuss the implications of the findings for prevention work with adolescents.     

Perceived angle of oscillatory motion

The general background of these experiments was the fact, known from e.g. trapezoidal window experiments, that rotary motion under certain conditions is perceived as oscillation. The aim was to identify the variables that determine the perceived angle of this oscillatory motion. Different shapes and different methods of generating the stimulation were used. No effect was obtained when varying the degree of trapezoidality of trapezoids, the location of the axis of rotation, the size of the stimulus pattern and the speed of the change. Both the occurrence and the perceived angle of oscillation was effected, however, by the width-height ratio of the stimulation, a decreasing ratio giving increasing occurrence of oscillation and decreasing perceived angle.     

MEASUREMENT OF EYE MOVEMENTS DURING A MICHOTTE LAUNCHING EVENT

The verbal responses and the eye movements of subjects viewing a Michotte launching event were recorded. The subjects were divided into two main groups: those reporting launching on every exposure and those giving no launching response at all. These two groups were compared with regard to several eye movement variables. They did not differ on the first exposure but did so on repeated exposures, indicating that what a subject perceives on the first exposure influences his eye movements on the following exposures.     

Cortisol Reactivity and Socially Anxious Behavior in Previously Institutionalized Youth

Research on Child and Adolescent Psychopathology - The current study investigated the association between cortisol stress reactivity to a social stressor and observed socially anxious behaviors...     

Outcome of psychodynamic child psychotherapy in routine practice

The aim of the present naturalistic study was to explore the effectiveness of psychodynamic child psychotherapy in routine practice. The sample comprised 207 psychotherapies with children 4–12?years of age with a broad range of mental health problems. Data on two measures, children’s global assessment scale (CGAS) and strength and difficulties questionnaire (SDQ), were collected pre-post therapy. Within-group changes were analysed using repeated measures mixed-models ANOVA. Individual changes were examined by means of clinical significance. The analyses revealed improvement in general functioning, decrease in problem severity and problem impact on the child’s everyday life, as well as an increase in prosocial behaviour. For CGAS, an interaction effect was discovered suggesting a larger improvement for younger children (4–6?years) than for older children (10–12?years). After therapy, 38% (n 76) achieved clinically significant improvement. Time-limited psychotherapy proved favourable for children assigned to that particular treatment modality. The study generated similar results as previous well-controlled trials, revealing statistically significant results in a large sample and in spite the use of non-specific outcome measures. The study provides everyday evidence to the effectiveness of child psychodynamic treatment with parallel parental work for a broad range of child mental health problems.     

Luthers Geschichtsauffassung

Luther's theological reputation took a severe blow throughout the course of twentieth-century Swedish academic theology. In this paper, I seek to show that a major reason for the increasingly negative evaluation of Luther in Swedish theology had to do with widespread misgivings over Luther's rejection free choice in De servo arbitrio (1525). I give an account of the emergence of these misgivings, trace them through a number of prominent Swedish theologians, and show how they eventually led to severe criticisms of Luther.     

Children With Conduct Problems and Co-occurring ADHD: Behavioral Improvements Following Parent Management Training

To scale up evidence-based treatment of conduct problems, parent management training, Oregon model (PMTO) has been disseminated throughout Norway. This study examined whether Attention Deficit Hyperactivity Disorder (ADHD) predicted the outcomes of PMTO. Of 253 children and families, 97 were reported to have an ADHD diagnosis. Although different at intake, the groups with and without ADHD had close to an equal change in behavioral status following treatment. Maternal depression and family income predicted the combined group's behavior following PMTO. The study indicates that reductions in conduct problems following PMTO are of the same magnitude in children with or without ADHD. However, some characteristics may differentially predict outcomes for children with combined problems.