All of the chapters have been written especially for the book by the leading scholars in the field.Michael I. Posner is Professor of Psychology at the ...

We divided the many diverse comments on our book into categories. These are: theory, scope and goals of our project, methods, comments on specific anatomical areas, the concept of attention, consciousness and cognitive control, and finally other issues. Although many of the points of the critics are certainly well taken, we believe studies that have emerged since our book provide strong evidence that the general approach taken in our book is now yielding important new data on the relation of cognitive (...) processes to underlying brain activity. (shrink)

ERP studies have shown modulation of activation in left frontal and posterior cortical language areas, as well as recruitment of right hemisphere homologues, based on task demands. Furthermore, blood-flow studies have demonstrated changes in the neural circuitry of word processing based on experience. The neural areas and time course of language processing are plastic depending on task demands and experience.

Current phylogenies show that paired fins and limbs are unique to jawed vertebrates and their immediate ancestry. Such fins evolved first as a single pair extending from an anterior location, and later stabilized as two pairs at pectoral and pelvic levels. Fin number, identity, and position are therefore key issues in vertebrate developmental evolution. Localization of the AP levels at which developmental signals initiate outgrowth from the body wall may be determined by Hox gene expression patterns along the lateral plate (...) mesoderm. This regionalization appears to be regulated independently of that in the paraxial mesoderm and axial skeleton. When combined with current hypotheses of Hox gene phylogenetic and functional diversity, these data suggest a new model of fin/limb developmental evolution. This coordinates body wall regions of outgrowth with primitive boundaries established in the gut, as well as the fundamental nonequivalence of pectoral and pelvic structures. BioEssays 20:371–381, 1998. © 1998 John Wiley & Sons Inc. (shrink)

Many of the most skilled and educated citizens of developing countries choose to emigrate. How may those societies respond to these facts? May they ever legitimately prevent the emigration of their citizens? Gillian Brock and Michael Blake debate these questions, and offer distinct arguments about the morality of emigration.

This article examines the anatomy and circuitry of skills that, like reading, calculating, recognizing, or remembering, are common abilities of humans. While the anatomical areas active are unique to each skill there are features common to all tasks. For example, all skills produce activation of a small number of widely separated neural areas that appear necessary to perform the task. These neural areas relate to internal codes that may not be observed by any external behavior nor be reportable by the (...) performer. There is considerable plasticity to the performance of skills. Task components can be given priority through attention, which serves to increase activation of the relevant brain areas. Attention can also cause reactivation of sensory areas driven by input, but usually only after a delay. The threshold for activation for any area may be temporarily reduced by prior activation . Skill components requiring attention tend to cause interference resulting in the dual tasks effects and unified focus of attention described in many cognitive studies. Practice may change the size or number of brain areas involved and alter the pathways used by the skill. By combining cognitive and anatomical analyses, a more general picture of the nature of skill emerges. (shrink)

In our view, a central issue in relating brain development to education is whether classroom interventions can alter neural networks related to cognition in ways that generalize beyond the specific domain of instruction. This issue depends upon understanding how neural networks develop under the influence of genes and experience. Imaging studies have revealed common networks underlying many important tasks undertaken at school, such as reading and number skills, and we are beginning to learn how genes and experience work together to (...) shape the development of these networks. The results obtained appear sufficient to propose research-based interventions that could prove useful in improving the ability of children to adjust to the school setting and to acquire skills like literacy and numeracy. (shrink)

How should we understand the political morality of migration? Are travel bans, walls, or carrier sanctions ever morally permissible in a just society? This book offers a new approach to these and related questions. It identifies a particular vision of how we might apply the notion of justice to migration policy - and an argument in favor of expanding the ethical tools we use, to include not only justice but moral notions such as mercy.

This paper examines the manner through which the Philippine government has utilized free trade in pursuing its development-oriented national security policies and strategies in the twenty-first century. It argues that against the backdrop of uneven economic development being perpetuated by a deeply entrenched oligarchic system and patronage culture, the primary referent of Philippine national security is its diminishing development space. Despite the government rhetoric with regard to the role of inclusive development in enhancing national security, the Philippine political economy remains (...) highly oligarchic and patrimonial. Such a condition has resulted in institutionalized inequality and structural poverty that undermine the country's supposedly development-based security model. The ability of the very few yet very powerful Filipino elites to transform the country into an oligarchipelago underscores the inefficiencies emanating from this type of politico-economic arrangement. In light of this, the paper evaluates the impacts of the Philippines' free trade activities on its overall level of development space by focusing on several crucial aspects of free trade that the government has failed to properly consider. Moreover, it scrutinizes the key factors that affect the utility of free trade for securing and enhancing the Philippines' development space. The paper concludes by arguing that the Philippine government's attempts at linking its development-centric security interests and free trade objectives have resulted not only in the preservation of uneven economic development and but also the further reinforcement of the existing oligarchic system and patronage culture in the country. (shrink)