Pelé, racial discourse and the 1958 World Cup

The aim of this essay is to map out the racial discourses of the 1950s, particularly those pertinent to the 1958 Soccer World Cup, in order to better understand the main ideas about race, which were in vogue at the time when Edson Arantes do Nascimento (Pelé) became (inter)nationally famous as a great sports star. The essay argues that Pelé’s statements regarding race and race relations in Brazil were inherently based on the discourses prevalent among academics and Brazil’s black activists during the 1950s. Pelé’s professional asceticism and his belief in individualism, cultivated during his youth in the city of Bauru, were further reinforced by the racial discourses of the 1950s. These views led him to believe that any discrimination he might encounter due to his colour and class could be overcome with a disciplined and professional attitude. Today, this sort of ascetic view of the world has been accused by certain segments of Brazil’s black movements as being insufficient to overcome the supposedly irresolvable inequalities that exist between Brazil’s black and white populations. Pelé, however, has not changed his position regarding anti-black discrimination, choosing to continue to emphasize professionalism and discipline as the two most formidable tools in the fight against racial discrimination and inequality.     

Experimental evidence for improved neuroimaging interpretation using three-dimensional graphic models

Three-dimensional (3D) or volumetric visualization is a useful resource for learning about the anatomy of the human brain. However, the effectiveness of 3D spatial visualization has not yet been assessed systematically. This report analyzes whether 3D volumetric visualization helps learners to identify and locate subcortical structures more precisely than classical cross-sectional images based on a two dimensional (2D) approach. Eighty participants were assigned to each experimental condition: 2D cross-sectional visualization vs. 3D volumetric visualization. Both groups were matched for age, gender, visual-spatial ability, and previous knowledge of neuroanatomy. Accuracy in identifying brain structures, execution time, and level of confidence in the response were taken as outcome measures. Moreover, interactive effects between the experimental conditions (2D vs. 3D) and factors such as level of competence (novice vs. expert), image modality (morphological and functional), and difficulty of the structures were analyzed. The percentage of correct answers (hit rate) and level of confidence in responses were significantly higher in the 3D visualization condition than in the 2D. In addition, the response time was significantly lower for the 3D visualization condition in comparison with the 2D. The interaction between the experimental condition (2D vs. 3D) and difficulty was significant, and the 3D condition facilitated the location of difficult images more than the 2D condition. 3D volumetric visualization helps to identify brain structures such as the hippocampus and amygdala, more accurately and rapidly than conventional 2D visualization. This paper discusses the implications of these results with regards to the learning process involved in neuroimaging interpretation.     

Environmental education technologies in a social void: the case of ‘Greendrive’

This article is based on a case study that follows the trajectory of a technological device aimed at environmental education from the engineering laboratory in which it was designed into the contexts in which it is used. ‘Greendrive’ is a driving simulator that accurately reproduces the performance of a vehicle in terms of fuel consumption and greenhouse gases emissions, in order to instill the principles of safe and environmentally friendly driving. The text is divided into three parts. The first part introduces the issue of transport behavior as one of the causes of climate change and the role of eco-driving in reducing emissions. The second part describes how a team of Portuguese engineering researchers developed the driving simulator and how a local authority and a consulting and training company are using it. Finally, the discussion part aims to show that despite the intentions of its creators and their clients, the driving simulator is unlikely, by itself, to generate changes in behavior. An information-deficit approach to environmental education that fails to consider the social embeddedness of human action and disregards the engagement of citizens has a very limited chance of success.     

Solving arithmetic word problems: an analysis of classification as a function of difficulty in children with and without arithmetic LD

This study was designed to determine a word problem difficulty classification in children with arithmetic learning disabilities (ALD; n = 104) in comparison with typically achieving students (n = 44). We tested variables such as (a) semantic structure (Change, Combine, Compare, and Equalize), (b) operation (subtraction and addition), and (c) position of the unknown quantity in the problem. Facet theory with multidimensional scaling techniques (MINISSA) was used to analyze the underlying dimensions in the responses of each group of participants. Our results indicate that although the word problem difficulty classifications for the 2 groups of children were different, the position of the unknown quantity had a greater influence on the level of difficulty of story problems than other variables. The noncanonical problems--specifically, those with the unknown term in the first place--although difficult for both groups of children, were the most difficult problems for children with ALD.