Author Index Volume 6

Authors Index

Author Index Volume 6     

Who is responsible for employability? Student perceptions and practices

The paper examines to whom Portuguese students attribute responsibility for the development of employability, and what extra-curricular activities they undertake to improve their employability. Particular focus lies upon how far students internalise responsibility for employability and if/how they seek to position themselves in the job market. The data was obtained through a survey of 828 Portuguese students. The analysis explored differences among student groups (higher education sector, gender, age and discipline). The attribution of responsibility was primarily to students themselves and to higher education institutions as key vehicles for employability development, echoing the theoretical conceptualisation which sees employability as an individual ability/responsibility. Yet, the observed variations provide empirical support for the conceptualisation of employability as complex and multi-dimensional. The study also revealed relatively high engagement with extra-curricular activities, evidencing that students not only assume responsibility for employability, but are proactively seeking to gain positional advantage in the job market.     

Expression of emotions and physiological changes during teaching

We investigated the expression of emotions while teaching in relation to a teacher’s physiological changes. We used polyvagal theory (PVT) to frame the study of teaching in a teacher education program. Donna, a teacher-researcher, experienced high levels of stress and anxiety prior to beginning to teach and throughout the lesson we used her expressed emotions as a focus for this research. We adopted event-oriented inquiry in a study of heart rate, oxygenation of the blood, and expressed emotions. Five events were identified for multilevel analysis in which we used narrative, prosodic analysis, and hermeneutic-phenomenological methods to learn more about the expression of emotions when Donna had: high heart rate (before and while teaching); low blood oxygenation (before and while teaching); and high blood oxygenation (while teaching). What we learned was consistent with the body’s monitoring system recognizing social harm and switching to the control of the unmyelinated vagus nerve, thereby shutting down organs and muscles associated with social communication—leading to irregularities in prosody and expression of emotion. In events involving high heart rate and low blood oxygenation the physiological environment was associated with less effective and sometimes confusing patterns in prosody, including intonation, pace of speaking, and pausing. In a low blood oxygenation environment there was evidence of rapid speech and shallow, irregular breathing. In contrast, during an event in which 100 % blood oxygenation occurred, prosody was perceived to be conducive to engagement and teacher expressed positive emotions, such as satisfaction, while teaching. Becoming aware of the purposes of the research and the results we obtained provided the teacher with tools to enact changes to her teaching practice, especially prosody of the voice. We regard it as a high priority to create tools to allow teachers and students, if and as necessary, to ameliorate excess emotions, and change heart rate, oxygenation levels, and breathing patterns.     

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.     

Peculiaridades de la lectura táctil del braille. Un estudio empírico

Resumen

Este artículo ofrece una discusión sobre las posibles causas que pueden explicar por qué el desarrollo cognitivo de los ciegos presenta retrasos importantes en el período de las operaciones concretas, mientras que no presenta diferencias respecto a los videntes en tareas de tipo proposicional. Para ello se examinan tres posibles explicaciones: la influencia del modo de escolarización, las características del tacto y la remediación verbal. Se acaba concluyendo que estas dos últimas hipótesis son las que ofrecen una explicación más convincente. Los datos que aquí se aportan pare?en sostener la hipótesis dual sobre la representación de la información en la memoria.