DIMENSION ANALYSIS OF THE PERCEPTION OF INSTRUMENTAL TIMBRE

W edin L. & G oude G. Dimension analysis of the perception of instrumental timbre. Scand. J. Psychol ., 1972, 1 3 , 228–240.—The dimensionality of the perception of instrumental timbre for single tones was investigated through multidimensional scaling according to Ekman's vector model of similarity. Three factors were extracted and they were identified with certain characteristics of the spectrum envelopes. It was found that initial transients were important for the identifiability of instrumental tones but their presence or absence did not influence the dimensional structure. The "perceptual structure" was found to be different from the "cognitive structure" (= knowledge about the classification of the instruments), and the results are general for both trained and naive listeners.     

APPROACH AND WITHDRAWAL IN YOUNG OF TILAPIA MOSSAMBICA (CICHLIDAE, PISCES) AS A FUNCTION OF AGE AND SOCIAL EXPERIENCE

G oude G., E dlund B., E ngqvist -E dlund U. & A nderson M. Approach and withdrawal in young of Tilapia mossambica (Cichlidae, Pisces) as a function of age and Social experience. Scand. J. Psychol ., 1972, 13 , 89–97.—In an experiment with eight groups of young of Tilapia mossambica , approach and withdrawal behavior was registered during brief (5 min) periods of stimulation with a moving dummy; the experiment lasted twelwe days (towards the end and immediately after the sensitive period). Four of the groups comprised young which had been isolated from each other until the first stimulation period; in the other four groups the young had been kept together in the experimental tanks. The age of the young when first stimulated was varied experimentally. Changes in approach and withdrawal behavior over time were studied along with e.g. changes in group strength. Age at first stimulation was found to be of some consequence but no clear differences were obtained between groups with different environmental experiences.     

A COMPARISON OF LEARNING IN RATS AND MICE IN A HEBB-WILLIAMS PROBLEM BOX

A learning experiment was performed with rats and mice in a Hebb-Williams problem box, using Problem No. 12. A measure of the habit strength ( _n ) was calculated, using the same criterion for both groups. In addition, the habit strength was calculated for another criterion for the rats. With the common criterion the function of learning was _n = 2.49 (1–0.88 ⁿ ) and _n = 1.71 (1–0.94 ⁿ ) for rats and mice respectively. According to the other criterion for the rat experiments, the function of learning was _n = 2.35 (1–0.84 ⁿ ). The measure and learning function is chosen and discussed with reference to Björkman's model for the measurement of associative strength and theory of verbal rote learning.     

Comparing observational software with paper and pencil for time-sampled data: A field test of Interval Manager (INTMAN)

In this article, we describe the Interval Manager (INTMAN) software system for collecting timesampled observational data and present a preliminary application comparing the program with a traditional paper-and-pencil method. INTMAN is a computer-assisted alternative to traditional paper-and-pencil methods for collecting fixed interval time-sampled observational data. The INTMAN data collection software runs on Pocket PC handheld computers and includes a desktop application for Microsoft Windows that is used for data analysis. Standard analysis options include modified frequencies, percent of intervals, conditional probabilities, and kappa agreement matrices and values. INTMAN and a standardized paper-and-pencil method were compared under identical conditions on five dimensions: setup time, duration of data entry, duration of interobserver agreement calculations, accuracy, and cost. Overall, the computer-assisted program was a more efficient and accurate data collection system for time-sampled data than the traditional method.     

Cross-system concordance of personality disorder diagnoses of DSM-IV and diagnostic criteria for research of ICD-10

The aim in this study was to examine the cross-system concordance between the personality disorders (PDs) of DSM-IV and Diagnostic Criteria for Research of ICD-10 Classification of Mental and Behavioral Disorders, 10th rev. (ICD-10) PD diagnoses were made by a structured interview in a clinical psychiatric sample of 138 individuals. Both categorical and dimensional scores for each PD were established. The frequency of patients with a PD diagnosis on either classification who were also positive on the other varied from 26% for the schizoid PDs to 88% for the histrionic PDs. The chance-corrected agreement (Cohen's kappa) ranged from .37 to .94. The dimensional correlation (Pearson's r) between pairs of PD criteria sets was in the range of .79 to .98. In conclusion, when analyzed categorically, some of the PDs of DSM-IV and ICD-10-DCR were only moderately concordant. The reasons appear to be different criteria formulations and arbitrary thresholds for diagnoses. In contrast to categorical diagnoses, dimensional agreement was high, implicating similar trait-concept definitions. The least concordant pair of PD was antisocial (DSM-IV)-dissocial (ICD-10).     

Can this be evil? Evilness seen as intention or drive

This article was originally read as an introductory plenary paper at the German-Nordic Clinical Conference, September 2015 in Berlin. The heading of the conference was ‘On Cruelty and Destructiveness’. The paper takes as its starting point the composite figure of Dr Jekyll and Mr Hyde. It discusses the meaning of intentionality, or the lack of a conscious intention of being evil, in comparison to evil deeds caused by uninhibited drive satisfaction. Evilness is put into a social and a psycho-developmental context. Examples of contemporary atrocities are discussed, leading up to a formulation of a multi-factorial explanatory model of evil, taken from Michael Stones book ‘The Anatomy of Evil’.