A study of how individuals solve complex and ill-structured problems

A number of factors cause individuals to use diverse strategies to solve problems. This paper presents a methodology for examining these differences in strategy. Verbal protocols are elicited to collect data on the cognitive processes occurring during problem solving. These data, codified into propositional representations, and non-parametric statistical comparisons are then used to evaluate the significance of strategy differences. These strategies are then mapped with dynamical graphs, with which we examine the task-independent and the task-specific cognitive representations the participants used. As an illustrative example we apply this methodology to study the influence of two contributing factors, professional training and national culture, on the strategies adopted by professionals to solve a complex and ill-structured problem (hunger in a country). The problem-solving strategies of professionals from different countries and trained in architecture, engineering, law or medicine are analyzed to show some intriguing differences in the general strategies adopted by individuals belonging to different professions, and the outcomes from using these strategies.     

Ocular findings in pediatric deaths under 2 years of age (1994-2004)

Abstract:  Our purpose is to highlight novel ocular findings of 102 forensic pediatric cases under 2 years of age who die suddenly. Forensic information, grossing, and microscopic eye protocol was followed. The most common diagnosis was Sudden Infant Death Syndrome (SIDS) (57/102). Novel cytoid bodies were present in the retina of 72/102 cases and they were located predominantly 90% (65/72) at the anterior part of the retina ( p  < 0.001). Of the SIDS cases, 85% (47/57) showed the presence of cytoid bodies, and among all diagnosis, SIDS was the most associated with cytoid bodies ( p  = 0.003). A second observation was extramedullary hematopoiesis (EMH) identified in 35/102 cases and 22 of the 57 SIDS cases. The most frequent EMH location was the choroids (29/35). This study is the first to demonstrate the presence of cytoid bodies and extramedullary hematopoiesis in the retinas of SIDS cases and children who die suddenly from other causes.     

Tribal or Indigenous? The Indian Dilemma

Abstract

Current Maoist struggles, resulting from deprivation of livelihood in the Central Indian tribal belt and for autonomy in Northeast India, focus on the rights of tribes who claim to be indigenous In the Northeast the demand is to be considered the ‘original’ inhabitants of the region and, in the rest of India, it is the first inhabitants of India as a whole. Most conflicts today are around identity, central to which is indigenous status and tribal sustenance. Much resource has been alienated for ‘national development’ since independence in 1947. A national failure to recognise the importance of community-based sustenance facilitates its alienation. Intensified alienation, resulting from globalisation, causes more conflicts and greater state suppression. This article discusses the link between development and indigenous status, and implications for human rights.     

Territorial dispossession: dynamics of capitalist expansion in rural territories in South America

The rural territories of the Agrarian South have been occupying a central role as epicentres for the recent dynamics of capitalist expansion. Over the last years this has led to an increase in the process of control and extraction of natural common goods by different mechanisms such as agribusiness, mining-energetic projects, mega-infrastructure building, cultural dispossession and so on. Taking the territory as the central analytical approach that involves different dimensions and scales, we analyse the recent transformations in several rural sceneries from South America where various forms of dispossession of natural goods have been presented. With this perspective, we hope to contribute to the analysis and understanding of the agrarian transformations in the Agrarian South.     

Psychometric Proprieties and Construct Validity of the Brother-Sister Questionnaire in a Sample of Portuguese Adolescents

The Brother-Sister Questionnaire (BSQ; Graham-Bermann and Cutler 1994) is an instrument designed to measure qualities of sibling relationships. Aim: In the present study the main objective was to examine the psychometric properties and validity construct of BSQ - Portuguese version. Data were collected among 197 adolescents. The Cronbach’s alpha of the four domains ranged from .58 to .84. The psychometric characteristics of BSQ Portuguese version were found to be adequate. The results confirm the multi-dimensional model composed of four factors proposed by the authors of this instrument, as well as their suitability to assess quality of Portuguese sibling relationships. The BSQ offers a reliable and valid measure to be used within Portuguese population.     

Estimating intersectoral technology spillovers for Brazil

This paper aims to evaluate the main intersectoral R&D flows in the Brazilian economy, determining their direction and magnitude. Unlike other studies that focus exclusively on rent spillovers flows of R&D, this paper also calculates spillovers with total spending on innovation in addition to R&D expenditure. In the case of developing countries, where R&D is of lower relative importance, we assume that technological effort is measured more accurately if it is considered as different types of innovative expenditure. We used data from the Technological Innovation Survey, conducted by the Brazilian Institute of Geography and Statistics with the support of Ministry of Science and Technology and data from an input–output matrix for the Brazilian economy, calibrated by Laboratório de Analises Territoriais e Setoriais—LATES of the Federal University of Juiz de Fora. The analysis is from the year 2011 and covers 32 sectors of economic activity resulting from the compatibility of the two databases. The main results show a mapping of the intersectoral flow of knowledge embodied both by the total expenditure on innovation and by in-house R&D to Brazil for the year 2011. It is important to highlight the wealth of detail of such a mapping, as it characterizes not only by sectoral interdependence of these aspects, but it also shows the direction of flows, the sectoral hierarchy in terms of “donation” of technical knowledge and the intersectoral flows in terms of technological intensity.     

Dyadic Types of Sibling Sexual Coercion

Sibling sexual abuse seems to be the most prevalent form of sexual abuse in the family context. This study used the Sexual Coercion Scale of the Revised Conflict Tactics Scales – Sibling Version (Straus et al. 1995) to measure the extent of sibling sexual coercion in a sample of 590 Portuguese university students. Prevalence: 11% of male students and 5% of female students had sexually coerced a sibling in the year when the participant was about 13 years old or in another year. Chronicity: When there was sexual coercion in a sibling relationship, it was perpetrated an average of 22.4 (mean) times by males and 9.1 times by females. Dyadic Concordance Types (DCT’s) revealed that in 26% there was only one perpetrator who was Male-Only, in 19% the perpetrator was Female-Only and more than half (55%) Both coerced. From the perspective of female respondents, in 50% of the cases the perpetrator was a Male-Only, in 31% Female-Only and in 19% Both coerced. Conclusions: Sexual coercion of siblings is probably more frequent than generally realized. Males had higher rates of perpetration, but the percentage of females was substantial. These results suggest a need to expand research to understand the etiology of sibling sexual coercion by females as well as males, understand causes, risk factors and to expand efforts to reduce sexual coercion in sibling relationships.     

Fatal intoxication with a selective serotonin reuptake inhibitor, lorazepam, and codeine

Selective serotonin reuptake inhibitors were introduced in 1987 as an alternative treatment option for patients with depression or certain anxiety disorders. Unfortunately, this greater use has prompted a corresponding increase in reports of more severe side effects and fatalities, with a majority of fatalities occurring due to coingestion of selective serotonin reuptake inhibitors with other substances or serotonergic drugs. We report a case which exemplifies one such fatality related to sertraline, lorazepam, and codeine coingestion. A brief discussion of the presumed mechanism by which death occurred will be offered.