Instrumental and expressive violence in Belgian homicide perpetrators

The present study aimed to examine offender types in a sample of Belgian single‐perpetrator/single‐victim homicide cases. First, it was investigated if the distinction between instrumental and expressive aggression could be documented in crime scene and offender background characteristics. Second, the instrumental and expressive themes from the first analysis were examined in relation to the motives the perpetrators themselves provided for their offence. A sample of 97 solved homicide cases was analysed using the non‐metric multidimensional scaling procedure Proxscal. The results revealed that 62% of the homicide crime scenes and 67% of the offender backgrounds could be classified as either expressive or instrumental. The self‐reported motives did not correspond with the themes according to the Proxscal analysis. Copyright © 2010 John Wiley & Sons, Ltd.     

Instrumental cardiovascular conditioning: A review

This paper reviews experiments, hypotheses, and current controversies about instrumental cardiovascular conditioning. Demonstrations of such conditioning in curarized animals challenged a differentiation between instrumental and classical learning on the basis of their respective effector systems but did not prove direct operant learning by the autonomic nervous system. In humans, ethical prohibition of curarization and lack of adequate controls for respiration and muscle tension have resulted in incomplete understanding of the roles of voluntary, somatic mediators. Despite a variety of potential clinical applications of biofeedback, the available literature lacks studies of its efficacy compared to more standard modes of therapy. The physiological mechanisms and central neural pathways involved ininstrumental cardiovascular conditioning remainalmost totally unknown.     

A closer look at self-reported suicide attempts: false positives and false negatives

The validity of self-reported suicide attempt information is undermined by false positives (e.g., incidences without intent to die), or by unreported suicide attempts, referred to as false negatives. In a sample of 1,385 Austrian adults, we explored the occurrence of false positives and false negatives with detailed, probing questions. Removing false positives decreased the rate of suicide attempters from 4.3% to 2.7%. Probing questions also revealed 0.8% false negatives. We recommend using probing questions with both those who report a suicide attempt and those who do not report a suicide attempt to increase the validity of self-reported suicide-related information.     

A cautionary note: Parents' socialization of boys and girls

Thirty-six families with one toddler child were observed for 7 hr in their own homes with both parents and the child present. The parents interacted less in the first two sessions than in the last five and were more negative and less positive when they did interact in the early sessions. There was also a sex of child by time interaction, with boys receiving many more negative interactions early in the observations. It was suggested that observation data should be checked for stability prior to interpretation and that care should be taken to collect enough data to ensure stability.Parts of this study were supported by a grant from the Office of Scientific and Scholarly Research, Graduate School, University of Oregon.     

Adolescents' perceptions of national identification and socialization: A grounded analysis

This paper examines the perceived influence of parents and family and the construction of national and religious identification amongst adolescents theoretically sampled from along the border between the Irish Republic and the Northern Ireland. Two hundred and sixty‐one young people wrote essays on the meaning of their national identity and the influence of parents, families and the border on national and religious identities. Lengthy and detailed responses were subjected to a grounded analysis. Results revealed the complexity of young people's identification processes and their opinions and experiences of religious and national socialization. The majority of respondents attached a great deal of significance to their national identity. Identity was represented across a range of meanings including sport, government policy, culture, folklore and characteristics thought typical of a given nationality. Diversity was valued though national and religious categories were defined exclusively. Parents and family were viewed as important sources of socialization and the intergenerational transmission of identity was viewed as natural and inevitable. There was a widespread belief that national and religious identity overlapped and though many asserted that religion could promote tolerance and inclusion there was an implicit acceptance that it could also fuel intergroup hostilities.     

Benefits of expressive writing and expressive talking about life goals

This study employed a 2 (writing vs. talking) × 2 (life goals vs. daily schedule) fully crossed, factorial design to examine whether health benefits might accrue for talking and/or writing about life goals. Participants assigned the life goals topic had fewer illness-related health center visits, regardless of mode of expression, compared to participants assigned the non-emotional topic. Counter to expectation, optimism did not moderate the effect of topic on illness-related health center visits. Participants in talking groups rated post-intervention mood as less negative than those in writing groups and participants rated talking about life goals as more difficult than writing about life goals.     

Native American religion versus archaeological science: A pernicious dichotomy revisited

Adversarial relations between science and religion have recurred throughout Western History. Archaeologists figure prominently in a recent incarnation of this debate as members of a hegemonic scientific elite. Postmodern debates situate disagreements in cosmological differences between innocent, traditional, native peoples and insensitive, career-mad, colonialist scientists. This simplistic dichotomy patronizes both First Peoples and archaeologists, pitting two economically marginal groups in a political struggle that neither can win. Although a few scholars have discussed the tyrannical nature of anthropological models of tradition and culture, little consideration has been given to the fact that archaeology as a scientific discipline is drastically under-funded, with little research support and few jobs. Reconsideration of which political and economic groups actually benefit from the dramatization of a dichotomy between traditional and academic perspectives indicates some interesting patterns. The search for common ground is shown to have ethical implications for both the futures of First Peoples and the future of archaeology. An earlier version of this paper was presented at a symposium entitled “Ethics in Science: Special Problems in Anthropology and Archaeology” held at the 1998 Annual Meeting of the American Association for the Advancement of Science (AAAS), Philadelphia, PA, 15 February, 1998.     

The socialization of sex-differentiated skills and academic performance: A mediational model

Using a multifactorial model, sex differences in academic performance were examined in a sample of 347 elementary school children. As expected, girls' academic performance averaged higher than boys'. Path analysis confirmed initial hypotheses that girls' advantage is partially due to their characteristic of greater responsiveness to social cues and compliance with adult direction. This advantage was partially offset in this model by boys' greater visual-spatial skill, which also was a predictor of academic success. Access to stereotypic masculine toys and activities at home was, for both sexes, a predictor of children's visual-spatial ability. As expected, socioeconomic variables, including mothers' occupation and fathers' level of education, also influenced the environmental, social, and cognitive factors predicting academic success. These results indicate that boys' and girls' differential development of specific cognitive and social skills may play an important role in establishing sex differences in academic performance.     

Decoding emotions in expressive music performances: A multi-lab replication and extension study

With over 560 citations reported on Google Scholar by April 2018, a publication by Juslin and Gabrielsson (1996) presented evidence supporting performers’ abilities to communicate, with high accuracy, their intended emotional expressions in music to listeners. Though there have been related studies published on this topic, there has yet to be a direct replication of this paper. A replication is warranted given the paper’s influence in the field and the implications of its results. The present experiment joins the recent replication effort by producing a five-lab replication using the original methodology. Expressive performances of seven emotions (e.g. happy, sad, angry, etc.) by professional musicians were recorded using the same three melodies from the original study. Participants (N?=?319) were presented with recordings and rated how well each emotion matched the emotional quality using a 0–10 scale. The same instruments from the original study (i.e. violin, voice, and flute) were used, with the addition of piano. In an effort to increase the accessibility of the experiment and allow for a more ecologically-valid environment, the recordings were presented using an internet-based survey platform. As an extension to the original study, this experiment investigated how musicality, emotional intelligence, and emotional contagion might explain individual differences in the decoding process. Results found overall high decoding accuracy (57%) when using emotion ratings aggregated for the sample of participants, similar to the method of analysis from the original study. However, when decoding accuracy was scored for each participant individually the average accuracy was much lower (31%). Unlike in the original study, the voice was found to be the most expressive instrument. Generalised Linear Mixed Effects Regression modelling revealed that musical training and emotional engagement with music positively influences emotion decoding accuracy.