Sustained attention, a key cognitive skill that improves during childhood and adolescence, tends to be worse in some emotional and behavioural disorders. Sustained attention is typically studied in non-affective task contexts; here, we used a novel task to index performance in affective versus neutral contexts across adolescence (N = 465; ages 11–18). We asked whether: (i) performance would be worse in negative versus neutral task contexts; (ii) performance would improve with age; (iii) affective interference would be greater in younger adolescents; (...) (iv) adolescents at risk for depression and higher in anxiety would show overall worse performance; and (v) would show differential performance in negative contexts. Results indicated that participants performed more poorly in negative contexts and showed age-related performance improvements. Those at risk of depression performed more poorly than those at lower risk. However, there was no difference between groups as a result of affective context. For anxiety there was no difference in performance as a function of severity. However, those with higher anxiety showed less variance in their reaction times to negative stimuli than those with lower anxiety. One interpretation is that moderate levels of emotional arousal associated with anxiety make individuals less susceptible to the distracting effects of negative stimuli. (shrink)

About one third of patients with epilepsy have seizures refractory to the medical treatment. Electrical stimulation mapping is the gold standard for the identification of “eloquent” areas prior to resection of epileptogenic tissue. However, it is time-consuming and may cause undesired side effects. Broadband gamma activity recorded with extraoperative electrocorticography during cognitive tasks may be an alternative to ESM but until now has not proven of definitive clinical value. Considering their role in cognition, the alpha and beta bands could further (...) improve the identification of eloquent cortex. We compared gamma, alpha and beta activity, and their combinations for the identification of eloquent cortical areas defined by ESM. Ten patients with intractable focal epilepsy participated in a delayed-match-to-sample task, where syllable sounds were compared to visually presented letters. We used a generalized linear model approach to find the optimal weighting of each band for predicting ESM-defined categories and estimated the diagnostic ability by calculating the area under the receiver operating characteristic curve. Gamma activity increased more in eloquent than in non-eloquent areas, whereas alpha and beta power decreased more in eloquent areas. Diagnostic ability of each band was close to 0.7 for all bands but depended on multiple factors including the time period of the cognitive task, the location of the electrodes and the patient’s degree of attention to the stimulus. We show that diagnostic ability can be increased by 3–5% by combining gamma and alpha and by 7.5–11% when gamma and beta were combined. We then show how ECoG power modulation from cognitive testing can be used to map the probability of eloquence in individual patients and how this probability map can be used in clinical settings to optimize ESM planning. We conclude that the combination of gamma and beta power modulation during cognitive testing can contribute to the identification of eloquent areas prior to ESM in patients with refractory focal epilepsy. (shrink)

Volume 39 of the Tanner Lectures on Human Values includes lectures initially scheduled during the academic year 2019-2020. Owing to the global coronavirus pandemic, some were delivered at a later date. The Tanner Lectures are published in an annual volume. In addition to permanent lectures at nine universities, the Tanner Lectures on Human Values funds special one-time lectures at selected higher educational institutions in the United States and around the world.

Several variants of Lewis's Best System Account of Lawhood have been proposed that avoid its commitment to perfectly natural properties. There has been little discussion of the relative merits of these proposals, and little discussion of how one might extend this strategy to provide natural property-free variants of Lewis's other accounts, such as his accounts of duplication, intrinsicality, causation, counterfactuals, and reference. We undertake these projects in this paper. We begin by providing a framework for classifying and assessing the variants (...) of the Best System Account. We then evaluate these proposals, and identify the most promising candidates. We go on to develop a proposal for systematically modifying Lewis's other accounts so that they, too, avoid commitment to perfectly natural properties. We conclude by briefly considering a different route one might take to developing natural property-free versions of Lewis's other accounts, drawing on recent work by Williams. (shrink)

Interpretations of Poetry and Religion is the third volume in a new critical edition of the complete works of George Santayana that restores Santayana's original text and provides important new scholarly information.Published in the spring of 1900, Interpretations of Poetry and Religion was George Santayana's first book of critical prose. It developed his view that "poetry is called religion when it intervenes in life, and religion, when it merely supervenes upon life, is seen to be nothing but poetry." This statement (...) and the point of view it espoused contributed significantly to the debate between science and religion at the turn of the century, and its eloquence and clearsightedness continue to have an impact on current discussions about the nature of religion.Interpretations of Poetry and Religion affronted Santayana's peers with its assault on literary and religious pieties of the cultivated classes. William James called its philosophy of harmonious and integral ideal systems nothing less than "a perfection of rottenness."In his insightful introductory essay, Joel Porte observes that while Santayana's theory of correlative objects, his espousal of the "ideal" - the normal human affinity for abstraction - and exaltation of the imagination may have offended some at Harvard, these ideas had a significant influence on other Harvard scholars T.S. Eliot and Santayana's "truest disciple," Wallace Stevens.Herman J. Saatkamp, Jr., heads the Department of Philosophy and Humanities at Texas A & M University. William G. Holzberger is a Professor of English at Bucknell University. Joel Porte is Whiton Professor of American Literature at Cornell University. (shrink)

If the world itself is metaphysically indeterminate in a specified respect, what follows? In this paper, we develop a theory of metaphysical indeterminacy answering this question.

Omnipresent calls for more women in university administration assume these women will prioritize using resources and power to increase female representation, especially in STEM fields where women are most underrepresented. However, empirical evidence is lacking for systematic differences in female versus male administrators’ attitudes. Do female administrators agree on which strategies are best, and do men see things differently? To answer this question, we explored United States college and university administrators’ opinions regarding policies, strategies, and structural changes in their organizations (...) designed to increase women professors’ representation and retention in STEM fields. A comprehensive review of past research yielded a database of potentially-effective, recommended policies (e.g., increasing emphasis on teaching, service, and administration during promotion reviews; stopping the tenure clock for childbearing; providing on-campus childcare; couples-hiring; sharing tenure lines; having more women chair search committees; setting gender quotas for promotion). A survey based on these recommended policies was sent to provosts, deans, associate deans, and department chairs of STEM fields at 96 public and private research universities (formerly called R1s) across the U.S. These administrators were asked to rate the quality and feasibility of each recommended policy; 474 provided data, of which 334 contained complete numerical data used in the analyses, so our results are based on a large, geographically diverse group of administrators at research universities. Our data revealed that female administrators perceived the 44 strategies to be higher in quality overall than did male administrators--but not higher in feasibility--with 9 policies perceived differently when rated by women versus men administrators, after imposing conservative statistical controls. There was broad general agreement on the relative rankings of the 44 policies in terms of their perceived quality. Overall, our national survey of U.S. administrators supported the assertion that placing women in administrative roles creates greater emphasis on the importance of enacting policies to attract and retain women in STEM. Topics of disagreement between women and men regarding strategy quality are important focuses of future policy and planning, because female administrators may have insights into how to retain women professors that male administrators do not share. (shrink)

Information can be public among a group. Whether or not information is public matters, for example, for accounts of interdependent rational choice, of communication, and of joint intention. A standard analysis of public information identifies it with (some variant of) common belief. The latter notion is stipulatively defined as an infinite conjunction: for p to be commonly believed is for it to believed by all members of a group, for all members to believe that all members believe it, and so (...) forth. This analysis is often presupposed without much argument in philosophy. Theoretical entrenchment or intuitions about cases might give some traction on the question, but give little insight about why the identification holds, if it does. The strategy of this paper is to characterize a practical-normative role for information being public, and show that the only things that play that role are (variants of) common belief as stipulatively characterized. In more detail: a functional role for “taking a proposition for granted” in non-isolated decision making is characterized. I then present some minimal conditions under which such an attitude is correctly held. The key assumption links this attitude to beliefs about what is public. From minimal a priori principles, we can argue that a proposition being public among a group entails common commitment to believe among that group. Later sections explore partial converses to this result, the factivity of publicity and publicity from the perspective of outsiders to the group, and objections to the aprioricity of the result deriving from a posteriori existential presuppositions. (shrink)

High-spin states in the odd-odd N = Z nucleus Co-54 have been investigated by the fusion-evaporation reaction Si-28(S-32,1 alpha 1p1n)Co-54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1 pi neutron detector array. A significantly extended excitation scheme of Co-54 is presented, which includes a candidate for the isospin T = 1, 6(+) state of the 1f(7/2)(-2) multiplet. The results are compared to large-scale shell-model (...) calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations. (shrink)

Two rotational bands have been identified and characterized in the proton-magic N = Z + 1 nucleus Ni-57. These bands complete the systematics of well-and superdeformed rotational bands in the light nickel isotopes starting from doubly magic Ni-56 to Ni-60. High-spin states in Ni-57 have been produced in the fusion-evaporation reaction Si-28(S-32, 2p1n)Ni-57 and studied with the gamma-ray detection array GAMMASPHERE operated in conjunction with detectors for evaporated light charged particles and neutrons. The features of the rotational bands in Ni-57 (...) are compared to those of neighbouring isotopes and interpreted by means of configuration-dependent cranked Nilsson-Strutinsky calculations. The two observed high-spin bands are considered signature partners and assigned to configurations with one 1g(9/2) proton and one 1g(9/2) neutron, resulting in an unambiguous understanding of the energetically favoured signature alpha = -1/2 band but a somewhat less satisfactory description of the signature alpha = +1/2 band. (shrink)

Overzicht van de rationalistische traditie in de filosofie van de kunst sinds Kant door een hoogleraar aan de Leuvense universiteit.