THE EQUIVALENCE COEFFICIENT AND THE KUDER-RICHARDSON COEFFICIENT 20

H enrysson , S. The equivalence coefficient and the Kuder-Richardson coefficient 20. Scand. J. Psychol ., 1962, 3 , 40–46.—The relation between the equivalence coefficient and the Kuder-Richardson coefficient 20 is discussed. Formulas, tables and graphs of the difference between the two coefficients are given. In most cases the difference between the two coefficients will be rather small.     

RATINGS OF ANXIETY-PRONENESS AND RESPONSES TO ELECTRICAL PAIN STIMULATION: Preliminary experiments in a group of young delinquents

A group of young delinquents clinically rated as manifesting a tendency to react with anxiety and tension was compared with a group from the same prison with predominantly 'psychopathic' traits according to clinical ratings. The delinquents were subjected to electrical pain stimulation and tested with a battery of tests and personality inventories. In line with the hypotheses, the more anxiety-prone delinquents showed greater sensitivity to pain, had lower scores in the Leg Persistence Test, shorter reaction times and more errors in an auditive choice reaction test. There were no significant differences with regard to the inventory variables.     

A PARADOX IN THE PERCEPTION OF LUMINANCE GRADIENTS. I

Under certain conditions subjects looking at a luminance gradient report a physically darker part of the gradient to be brighter than an adjacent area of higher luminance. This brightness paradox was studied in a series of experiments using a magnitude estimation method. The main results were that both the changing sign of the second derivative of the luminance function (Mach's hypothesis) and the higher or lower luminance of an adjacent area (McDougall's drainage theory) are critical conditions for the appearance of the paradox. In the present study none of these conditions per se resulted in a brightness paradox.     

Children's Assignment of Gender to Animal Characters in Pictures

Tests showed that 4- to 6-year-old children believe that people can be influenced or “controlled” both by thinking (e.g., both wishful thinking and magical behavior) and by realistic means (e.g., positive reinforcement, example, and group pressure). Belief in control by thinking did not vary by the subjects' sex or age, influence type (wishing or magical behavior), or target response (behavior, emotion, or thought). Quantitative measures, however, suggested that magical behavior was seen by subjects as being more efficient than wishing, and that emotion was considered easier to influence than thinking. Beliefs in control by thinking were not related to a measure of fantasy—reality differentiation (realism).     

Vicissitudes of ideas of cure in analysands and their analysts: a longitudinal interview study

This longitudinal prospective study focuses on analysands' and analysts' implicit ideas of how psychoanalysis might help analysands' psychological problems. Seven analysands and their analysts were periodically interviewed. Single ideas of cure from 75 interviews were inductively categorized. Nine distinct types of cures emerged, representing the wished-for goals of psychoanalysis, as well as the actions to achieve the wished-for changes. Each category might comprise more or less utopian ideas of wished-for cure as well as ideas of an attainable, more limited cure, or combinations of these. The utopian ideas of wished-for cures persisted throughout the psychoanalytic process for more than half the analysands and analysts. The abandonment of these ideas was related to the experienced outcome of psychoanalysis. The relation between the theories of one analysand and her analyst is explored in depth in a case study with special emphasis on the analytic process. The study suggests that the psychoanalytic process might profit from the analyst's observance of such incongruities and an openness to work through them.     

Cognitive sex differences: speed and problem-solving strategies on computerized neuropsychological tasks

Skill, strategy, and laterality measures obtained through computerized neuropsychological tasks, a reaction time (RT) test, and a visuospatial problem-solving test, the Perceptual Maze Test, were analyzed in relation to sex and handedness of 56 high-school students. Boys were significantly faster than girls on most RT subtasks (including a response-inhibition task) and made more two-choice RT response errors for right-sided stimuli, which may be interpreted as resulting from a less cautious strategy. In maze performance, boys were superior to girls. An analysis of separate phases of the maze-solution process suggested that boys preferentially used an impulsive-global strategy. Girls, using a more reflective-sequential task-solving strategy, were significantly slower, without hitting more targets. Compared to all other groups, left-handed girls (strongly left-handed) had lower performance on maze tasks with no target information, particularly in left-sided solution pathways. Results were interpreted as reflecting differences in hemispheric competence and activation patterns between the sexes. Signs of a less differentiated lateralization and slight dysfunction of visuospatial skills in the left-handed girls were discussed.     

Personality dimensions in patients with sleep-apnea syndrome: comparison with narcolepsy

Personality measures of Anxiety-Neuroticism, Extraversion and Socialization obtained from self-report questionnaires were studied in a group of sleep-apnea patients (15 males, 5 females), and compared with results from a normal control group (63 males, 21 females) and a group of narcoleptic patients (17 males, 32 females). Sleep-apnea patients were significantly higher in Anxiety-Neuroticism and slightly higher in Extraversion than controls. Although the main symptom, i.e. excessive daytime sleepiness, of sleep-apnea and narcoleptic patients is similar, there were distinct differences in pattern of personality measures. Sleep-apnea patients were lower in Anxiety-Neuroticism and higher in Extraversion. Thus, increased sleepiness alone did not induce uniform changes in personality traits in the two patient groups. It is suggested that the particular personality profile of the sleep-apnea patients is secondary to increased psychosocial strain and coping strategies to keep awake. In contrast, the high Somatic Anxiety scores and low Socialization scores in the narcoleptic group are assumed to reflect a constitutional lability which also involves autonomic and sleep functions.     

Impulsivity and speed and errors in a reaction time task: a contribution to the construct validity of the concept of impulsivity

Acting on the spur of the moment without considering the effects is one of the core attributes of the extraversion-impulsivity concept. Performance in a choice-reaction time task may reflect this tendency. Reaction time and number of errors were studied in a group of 55 boys (15–17 years). Extraversion-impulsivity, anxiety proneness and some other personality characteristics were measured by inventory scales. As hypothesized more impulsive subjects had shorter reaction times and made more errors than less impulsive. This relationship was rather stable over a period of one month. Subjects with higher scores in the Psychoticism scale of the Eysenck Personality Questionnaire tended to make more errors. A considerable amount (36%) of the variance in the number of errors variable could be predicted from the three personality variables Impulsiveness, Muscular Tension and Psychoticism.