Leveling the Field: Talking Levels in Cognitive Science

Talk of levels is everywhere in cognitive science. Whether it is in terms of adjudicating longstanding debates or motivating foundational concepts, one cannot go far without hearing about the need to talk at different ‘levels’. Yet in spite of its widespread application and use, the concept of levels has received little sustained attention within cognitive science. This paper provides an analysis of the various ways the notion of levels has been deployed within cognitive science. The paper begins by introducing and motivating discussion via four representative accounts of levels. It then turns to outlining and relating the four accounts using two dimensions of comparison. The result is the creation of a conceptual framework that maps the logical space of levels talk, which offers an important step toward making sense of levels talk within cognitive science

The Philosophy and Neuroscience Movement

A movement dedicated to applying neuroscience to traditional philosophical problems and using philosophical methods to illuminate issues in neuroscience began about twenty-five years ago. Results in neuroscience have affected how we see traditional areas of philosophical concern such as perception, belief-formation, and consciousness. There is an interesting interaction between some of the distinctive features of neuroscience and important general issues in the philosophy of science. And recent neuroscience has thrown up a few conceptual issues that philosophers are perhaps best trained to deal with. After sketching the history of the movement, we explore the relationships between neuroscience and philosophy and introduce some of the specific issues that have arise

Correlated emission and spin-down variability in radio pulsars

The recent revelation that there are correlated period derivative and pulse shape changes in pulsars has dramatically changed our understanding of timing noise as well as the relationship between the radio emission and the properties of the magnetosphere as a whole. Using Gaussian processes we are able to model timing and emission variability using a regression technique that imposes no functional form on the data. We revisit the pulsars first studied by Lyne et al. (2010). We not only confirm the emission and rotational transitions revealed therein, but reveal further transitions and periodicities in 8 years of extended monitoring. We also show that in many of these objects the pulse profile transitions between two well-defined shapes, coincident with changes to the period derivative. With a view to the SKA and other telescopes capable of higher cadence we also study the detection limitations of period derivative changes.Comment: 4 pages, 2 Figures, Proceedings of IAU Symposium 337 "Pulsar Astrophysics - The Next 50 Years" held at Jodrell Bank Observatory, UK Sept. 4-8 201

Longitudinal Analysis of Antibody Responses to Trachoma Antigens Before and After Mass Drug Administration.

Blinding trachoma, caused by the bacteria Chlamydia trachomatis, is a neglected tropical disease targeted for elimination by 2020. A major component of the elimination strategy is mass drug administration (MDA) with azithromycin. Currently, program decisions are made based on clinical signs of ocular infection, but we have been investigating the use of antibody responses for post-MDA surveillance. In a previous study, IgG responses were detected in children lacking clinical evidence of trachoma, suggesting that IgG responses represented historical infection. To explore the utility of serology for program evaluation, we compared IgG and IgA responses to trachoma antigens and examined changes in IgG and IgA post-drug treatment. Dried blood spots and ocular swabs were collected with parental consent from 264 1-6 year olds in a single village of Kongwa District, central Tanzania. Each child also received an ocular exam for detection of clinical signs of trachoma. MDA was given, and six months later an additional blood spot was taken from these same children. Ocular swabs were analyzed for C. trachomatis DNA and antibody responses for IgA and total IgG were measured in dried bloods spots. Baseline antibody responses showed an increase in antibody levels with age. By age 6, the percentage positive for IgG (96.0%) was much higher than for IgA (74.2%). Antibody responses to trachoma antigens declined significantly six months after drug treatment for most age groups. The percentage decrease in IgA response was much greater than for IgG. However, no instances of seroreversion were observed. Data presented here suggest that focusing on concordant antibody responses in children will provide the best serological surveillance strategy for evaluation of trachoma control programs

The livelihood impacts of cash transfers in sub-Saharan Africa: beneficiary perspectives from six countries

Cash transfers (CTs) are a social protection mechanism to reduce the poorest households’ vulnerability to shocks and build human capital by smoothing consumption and sustaining expenditure on education and social welfare. Our study examines whether and how CTs go beyond welfare objectives to promote livelihoods. Presenting a cross-case analysis using original qualitative data on beneficiary perspectives from six African countries - Kenya, Ethiopia, Malawi, Lesotho, Zimbabwe and Ghana – we explore CT livelihood impacts within household economies and social networks, paying attention to gender issues. We find that a small but predictable flow of cash improves strategic livelihood choices and stimulates productive investments, including through positive effects on beneficiary entry into risk-sharing arrangements and networks for economic collaboration. Levels of household vulnerability and labour constraint nevertheless significantly mediate the ability of CTs to consolidate present livelihood outcomes. The varying availability of economic opportunities and effective programme implementation also shape livelihood impact. Incorporating beneficiary perspectives brings to the fore the multi-dimensionality of CT effects on experiences of poverty and deprivation, including gender dynamics and intangibles such as dignity and respect; they add powerful realism to the influence of the CT on both immediate survival and livelihood choices. Beyond this, they confirm wider knowledge on productive impact and bring nuance to the conditions under which, and mechanisms by which beneficiaries’ use CTs to build productive capability and assets and to make strategic livelihood choices

Cognitive Science and Two Images of the Person

A certain indecisiveness and lack of common purpose seems to be a feature of cognitive science at the moment. W e are in this paper that it can be explained in part by cognitive science's lack of success so far in connecting its scientific, computational image (better, images) of cognition to what we experience of people in ordinary life: in society, law, literature, etc. Following Sellars (1963), we call these two ways of representing cognizers the scientific image and the manifest image. The scientific image sees persons, and also artificial cognitive systems, as vast assem?blages of postulated units of some kind. In the manifest image by contrast, persons are seen as unified centre of representation, deliberation and action, able to reach focused, unified decisions and take focused, unified actions. Since the manifest image is the murkier of the two, more of the paper is devoted to it than to the scientific image. The manifest image is richer and more diverse than might at first be thought

Kant and Cognitive Science

Some of Kant's ideas about the mind have had a huge influence on cognitive science, in particular his view that sensory input has to be worked up using concepts or concept-like states and his conception of the mind as a system of cognitive fubnctions. We explore these influences in the first part of the paper. Other ideas of Kant's about the mind have not been assimilated into cognitive science, including important ideas about processes of synthesis, mental unity, and consciousness and self-consciousness. They are the topic of the second part of the paper

Does philosophy offer cognitive science distinctive methods?

Philosophy has never settled into a stable position in cognitive science and its role is not well understood. One reason for this is that the methods philosophers use to study cognition look quite peculiar to other cognitive scientists. This paper explores the methods of philosophy, laying out some of the main kinds and looking at some examples, and makes some remarks about their value to cognitive science

Mandated data archiving greatly improves access to research data

The data underlying scientific papers should be accessible to researchers both now and in the future, but how best can we ensure that these data are available? Here we examine the effectiveness of four approaches to data archiving: no stated archiving policy, recommending (but not requiring) archiving, and two versions of mandating data deposition at acceptance. We control for differences between data types by trying to obtain data from papers that use a single, widespread population genetic analysis, STRUCTURE. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscript improve the odds of finding the data online almost a thousand-fold compared to having no policy. However, archiving rates at journals with less stringent policies were only very slightly higher than those with no policy at all. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscript improve the odds of finding the data online almost a thousand fold compared to having no policy. However, archiving rates at journals with less stringent policies were only very slightly higher than those with no policy at all. We also assessed the effectiveness of asking for data directly from authors and obtained over half of the requested datasets, albeit with about 8 days delay and some disagreement with authors. Given the long term benefits of data accessibility to the academic community, we believe that journal based mandatory data archiving policies and mandatory data availability statements should be more widely adopted