Machine learning for human learners: opportunities,issues, tensions and threats

Educational technology research and development - Machine learning systems are infiltrating our lives and are beginning to become important in our education systems. This article, developed from a...     

Grounding Second Language Vocabulary Instruction in Cognitive Science

Cognitive neuroscience has gained significant insight into the mechanisms underlying the mental lexicon and their impact on second language vocabulary learning. However, relatively little effort has been put into understanding how these mechanisms may impact instructional practices. We attempt to bridge this gap. Towards that end, we first describe three main properties of the mental lexicon: words have distinct form and meaning representations; these representations are organized in multilingual network structures organized by similarity; and the representations differ in strength. Next, we translate the properties into a visual framework that we use to reflect upon how this knowledge affects three important choices in vocabulary instruction: composing word lists, selecting an instruction method, and consolidating newly acquired words. Lastly, we discuss opportunities for both science and practice, highlighting the importance of improving the ecological validity of scientific models and theories, and of developing instructional methods grounded in cognitive science.     

Bodies as objects of pedagogic power relations

This paper is based on a study titled ‘Enacting Feminisms in Academia’, which engaged five feminist lecturers teaching English at five different multilingual universities in Southern Africa. The study explored: (1) the complexity of sociolinguistic and feminist identity construction in multilingual seascapes, and by extension (2) how feminist educators' interpretation and enactment of their personal world-view informs their language teaching in terms of what they teach, how they teach, and why they teach what they do. The participants who hail from a diverse range of ideological landscapes were identified either by themselves or others as feminist teachers. Through a suite of data sources which comprised autobiographical essays, interviews and lecture observations, this paper explores how the female teacher's educative and pedagogic expertise and interactions are framed in relation to her race, gender, and age. Accepting the fluidity and complexity of identity positionalities, the paper explores the identity constructions of the feminist teachers in their communities of practice.     

CHARGE Association: Symptoms,behaviour and intervention

This paper reviews current knowledge on CHARGE Association. CHARGE is a relatively recently identified, heterogeneous, condition about which there is a good deal of medical information concerning the developmental anomalies involved. These include coloboma, heart defects, atrestia, retardation of development or growth, genital hypoplasia and ear problems including deafness. There is far less published material concerning the psychological and educational implications. The severity, impact and interaction between the six developmental anomalies characterising the condition can vary greatly. The paper considers aspects related to social behaviour and factors to be considered when planning educational interventions with this low incidence group of children who have more significant additional needs. Given the relatively low incidence of children with dual sensory impairment in the population and the wide range of demands made on educational psychologists' time, it is perhaps not surprising that most have little knowledge or experience of CHARGE Association. The purpose of this short paper, therefore, is to describe the main features of the condition, to note the incidence, to look at its impact upon learning and behaviour, and to consider the implications for intervention.     

Reinforcer and response specificity in appetitive transfer of control

Three experiments examine transfer from appetitive Pavlovian conditioning to appetitive instrumental responding by varying the similarity between conditions of Pavlovian reinforcement and instrumental reward. After conditioning with rats confined in a restraining device, a CS for electrical stimulation of the brain (ESB) produced substantial facilitation of operant responding for ESB, while a CS for food facilitated operant responding for food. However, no effects on rate of responding for food were seen during a CS for ESB. In a fourth experiment, four groups of rats were trained to barpress for rewarding electrical stimulation of the brain (ESB) and then given discriminative Pavlovian conditioning with ESB. The groups differed in the degree of similarity between the stimulus-response sequences present during Pavlovian conditioning and those occurring in instrumental responding. As similarity increased, so did the degree of conditioned facilitation in subsequent transfer tests. These results indicate that conditioned incentive responses or reinforcer-derived expectancies are specific to the conditions under which they develop, rather than generalized emotional or motivational responses.     

Exploring student beliefs and understanding in elementary science and mathematics

This study had the goal of investigating the association among elementary students' (N = 276) science and math beliefs and the relationship between those beliefs and teachers' ratings of mathematical and science understanding. Results of structural path analysis indicate that in science, intellectual risk‐taking (IRT; the willingness to share tentative ideas, ask questions, attempting to do, and learn new things) was positively related to teachers' ratings of science understanding, while creative self‐efficacy (CSE) beliefs (i.e., students' confidence in their ability to generate ideas and solutions in science) were indirectly related (working through IRT). Results also indicate that students' scientific certainty beliefs (i.e., the belief that science knowledge is stable, fixed, and represented by correct answers) were negatively related to teachers' ratings of science understanding. With respect to math, results indicate that students' CSE beliefs were positively related to teachers' ratings of math understanding; whereas students' mathematical source beliefs (i.e., believing that math knowledge originates from external sources) were negatively related. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 942–960, 2012     

How can organisations learn: an information systems development perspective

This article sets out to argue that organisations can learn but that they cannot do so in their own right without infrastructural support. This article further examines the notion that individuals in organisations also require the cognitive participation of the organisation itself as a learning entity to learn. The close reliance and affiliation required between individuals and organisations to enable their learning from one another are discussed. In continuation of this, specific examples are provided through the industry sector of information systems development (ISD) projects to illustrate of how organisations can learn. Finally, the question of how one identifies organisational learning is analysed. Following on from the ISD and its use in the analogy of organisational learning, the article discusses an organisational empirical research project currently being undertaken by the authors, which utilises blogs. Though there are many potential organisational learning connotations associated with blogs, they could be perceived as a type of information system. The ongoing research being undertaken with the company using the blogs will attempt to identify indicators of learning at the individual, group and organisational levels. The significance of the issues explored in this article lies in the fact that it addresses an ISD approach to study how an organisation learns, and why this perspective is useful towards understanding the process of organisational learning. This article contributes to the organisational learning debate through an illustrative industry example of ISD projects. In doing so, we wish to argue that though individual learning can occur in ISD projects, the collective nature of projects primarily engenders the interpretive aspect of organisational learning. We further believe that it is the interactive nature of an ISD project that allows an organisation to learn in tandem with project members as exemplified through the stages of a project life cycle. We feel that this article contributes to the ISD and organisational learning literature in terms of linking both concepts together.     

Biological Sensitivity to Context: The Interactive Effects of Stress Reactivity and Family Adversity on Socioemotional Behavior and School Readiness

This study examined the direct and interactive effects of stress reactivity and family adversity on socioemotional and cognitive development in three hundred and thirty-eight 5- to 6-year-old children. Neurobiological stress reactivity was measured as respiratory sinus arrhythmia and salivary cortisol responses to social, cognitive, sensory, and emotional challenges. Adaptation was assessed using child, parent, and teacher reports of externalizing symptoms, prosocial behaviors, school engagement, and academic competence. Results revealed significant interactions between reactivity and adversity. High stress reactivity was associated with more maladaptive outcomes in the context of high adversity but with better adaption in the context of low adversity. The findings corroborate a reconceptualization of stress reactivity as biological sensitivity to context by showing that high reactivity can both hinder and promote adaptive functioning.