Given that as much as half of human thought arises in a stimulus independent fashion, it would seem unlikely that such thoughts would play no functional role in our lives. However, evidence linking the mind-wandering state to performance decrement has led to the notion that mind-wandering primarily represents a form of cognitive failure. Based on previous work showing a prospective bias to mind-wandering, the current study explores the hypothesis that one potential function of spontaneous thought is to plan and anticipate (...) personally relevant future goals, a process referred to as autobiographical planning. The results confirm that the content of mind-wandering is predominantly future-focused, demonstrate that individuals with high working memory capacity are more likely to engage in prospective mind-wandering, and show that prospective mind-wandering frequently involves autobiographical planning. Together this evidence suggests that mind-wandering can enable prospective cognitive operations that are likely to be useful to the individual as they navigate through their daily lives. (shrink)

A plethora of normative conservation concepts have recently emerged, most of which are ill-defined: biological diversity, biological integrity, ecological restoration, ecological services, ecological rehabilitation, ecological sustainability, sustainable development, ecosystem health, ecosystem management, adaptive management, and keystone species are salient among them. These normative concepts can be organized and interpreted by reference to two new schools of conservation philosophy, compositionalism and functionalism. The former comprehends nature primarily by means of evolutionary ecology and considers Homo sapiens separate from nature. The latter comprehends (...) nature primarily by means of ecosystem ecology and considers Homo sapiens a part of nature. Biological diversity, biological integrity, and ecological restoration belong primarily in the compositionalist glossary; the rest belong primarily in the functionalist glossary. The former set are more appropriate norms for reserves, the latter for areas that are humanly inhabited and exploited. In contrast to the older schools of conservation philosophy, preservationism and resourcism, compositionalism and functionalism are complementary, not competitive and mutually exclusive. As the historically divergent ecological sciences—evolutionary ecology and ecosystem ecology—are increasingly synthesized, a more unified philosophy of conservation can be envisioned. (shrink)

By a close examination of changes in analytical chemistry between the years 1920 and 1950, I document the case that natural science has undergone and continues to undergo a major revolution. The central feature of this transformation is the rise in importance of scientific instrumentation. Prior to 1920, analytical chemists determined the chemical constitution of some unknown by treating it with a series of known compounds and observing the kind of reactions it underwent. After 1950, analytical chemists determined the chemical (...) constitution of an unknown by using a variety of instruments which allow one to discriminate chemicals in terms of their physical properties. This transformation involved changes in the practice of analytical chemistry. It involved the development of a new family of scientific instrument-making companies, and a new level of capital expenditure necessary to do analytical chemistry. It involved the development of new means to disseminate information about scientific instruments. While I do not document the broader case, these changes have been widespread throughout the natural sciences. It is the rise in the importance of instrumentation which is the key conceptual change in what has been identified as the fourth big scientific revolution. (shrink)

The current research investigates the interaction between thought suppression and individuals’ explicit awareness of their thoughts. Participants in three experiments attempted to suppress thoughts of a prior romantic relationship and their success at doing so was measured using a combination of self-catching and experience-sampling. In addition to thoughts that individuals spontaneously noticed, individuals were frequently caught engaging in thoughts of their previous partner at experience-sampling probes. Furthermore, probe-caught thoughts were: associated with stronger decoupling of attention from the environment, more likely (...) to occur under cognitive load, more frequent for individuals with a desire to reconcile, and associated with individual differences in the tendency to suppress thoughts. Together, these data suggest that individuals can lack meta-awareness that they have begun to think about a topic they are attempting to suppress, providing novel insight into the cognitive processes that are involved in attempting to control undesired mental states. (shrink)

How could physicalism be true of a world in which there are no fundamental physical phenomena? A familiar answer, due to Barbara Gail Montero and others, is that physicalism could be true of such a world if that world does not contain an infinite descent of mentality. Christopher Devlin Brown has produced a counterexample to that solution. We show how to modify the solution to accommodate Brown’s example: physicalism could be true of a world without fundamental physical phenomena if that (...) world does not contain an infinite descent of mentally constituted mentality. This solution is independently plausible and is available to physicalists of virtually all significant varieties. (shrink)

Recent studies suggest that meta-learning may provide an original solution to an enduring puzzle about whether neural networks can explain compositionality – in particular, by raising the prospect that compositionality can be understood as an emergent property of an inner-loop learning algorithm. We elaborate on this hypothesis and consider its empirical predictions regarding the neural mechanisms and development of human compositionality.

Background: Both the Council for International Organization of Medical Sciences and the Helsinki Declaration emphasize that the potential benefits of research should outweigh potential harms; consequently, some work has been conducted on participants' perception of benefits in therapeutic research. However, there appears to be very little work conducted with participants who have joined non-therapeutic research. This work was done to evaluate participants' perception of benefits in a genetic epidemiological study by examining their perception of the potential benefits of enrollment.Methods: In-depth (...) interviews lasting between 45 and 60 minutes were conducted with a convenient sample of 25 ill patients and 25 healthy accompanying relatives enrolled in a genetic epidemiological study of tuberculosis. Recorded interviews were transcribed and analyzed using content analysis.Results: Participants perceived that research was beneficial and some of the benefits included the generation of new knowledge, finding the cause of diseases, as well as the control, eradication and prevention of disease. Some thought that research was risky whilst others thought that the benefits outweighed the risks.Conclusion: Participants perceived research to be beneficial and most of them thought that, though it was risky, the benefits outweighed the risks. It is our view that researchers need to give serious consideration to participant's perception of benefits in designing their consent forms, to see to the fulfillment of achievable goals. (shrink)

According to Peter Galison , science has a highly fractionated structure with multiple sub-sub-disciplines, each with its own agenda. Cooperative trading between groups is necessary for most scientific work to move forward, and it is this trading that preserves the stability of science. We argue that it is not trading per se, but trading in a gift economy that guarantees stability. We support our claims with an examination of contemporary work on magnetic resonance imaging instrumentation. Specifically, we consider: How a (...) feature improvement, intended to reduce scan time, led to substantial medical mis-diagnosis; How a technical error, when corrected, created a consumer crisis in which radiologists preferred technically flawed instruments; How new magnetic resonance theory radically altered the physical interpretation of MRI images; How the MRI instrument at first was financially supported by, and--ironically--ultimately invalidated, the accepted understanding of the nature, source and management of chronic back pain. Ultimately there are three reasons stability requires gifting. First, without a general sense of shared purpose traders will not be committed to mutual engagement; profit does not provide an adequate shared purpose for the MRI community. Second, stability requires trust, and profits are not an adequate foundation for trust. Finally, knowledge is a gift that will not keep on giving if treated simply as a source of profit. (shrink)

The tendency for individuals to interpret ambiguous information in a threatening way is theorised to maintain anxiety disorders. Recent findings suggest that positive and negative interpretation bi...

Diogenes Laertius begins Lives of the Eminent Philosophers thus: “There are some who say that the study of philosophy had its beginning among the barbarians.” He goes on to review possible claims on behalf of the Persians, Babylonians, Indians, “Druids,” and Egyptians granting that each such peoples have wisdom traditions, but no true philosophy. Think what you may of Diogenes’ blunt Greek chauvinism, there is, indeed, something peculiar and unique about Greek philosophy. It begins in the early sixth century BCE (...) with speculation about the stuff of the world (water, air, fire); the forces moving that stuff around (Love and Strife, Mind); its beautiful-order (κοσμος) and the law(s) governing the moving cosmos (Justice, Logos). It rapidly develops by way of a diachronic dialectical process. That is, succeeding philosophers respond to the speculations of their predecessors with, often implicit, but always incisive criticism followed by ever subtler speculation. (shrink)

A sample of 259 South African managers completed a survey originally administered by Nel (1992). The results of the current study indicated a favourable move on four of the 15 questionable actions used to assess each group's ethical predisposition. Furthermore, the grand means for the two temporal-based samples also provided anecdotal evidence of a positive transition. Virtually identical results were in evidence when the segment of 89 top managers was compared to the sample of its higher level peers from the (...) earlier study by Nel. The results support the premise that today's South African managers have a more ethical predisposition than did their peers of some 20 years prior to them. However, the study concurrently documents the reality that there is ample room for further improvement. (shrink)

Journal of Mathematical Logic, Ahead of Print. We prove the first unconditional consistency result for superpolynomial circuit lower bounds with a relatively strong theory of bounded arithmetic. Namely, we show that the theory [math] is consistent with the conjecture that [math], i.e. some problem that is solvable in non-deterministic exponential time does not have polynomial size circuits. We suggest this is the best currently available evidence for the truth of the conjecture. The same techniques establish the same results with [math] (...) replaced by the class of problems decidable in non-deterministic barely superpolynomial time such as [math]. Additionally, we establish a magnification result on the hardness of proving circuit lower bounds. (shrink)

Aldo Leopold's 1949 Land Ethic is seminal in academic environmental ethics and the environmental-ethic-of-choice among professional conservationists and environmentalists. After sixty years, the sciences (evolutionary biology and ecology) that inform the land ethic have undergone much change. The land ethic can be revised to accommodate changes in its scientific foundations, but it cannot be scaled up to meet the challenge of global climate change. Fortunately, given the prominent place of Leopold in all circles environmental, he also faintly sketched an Earth (...) Ethic in a paper written in 1923 and published posthumously in 1979. The Earth Ethic is informed less by ecology and evolutionary biology than by biogeochemistry and anticipates the Gaia Hypothesis, viz., that the Earth (or biosphere) is a whole, living being. If so Leopold thought it a worthy object of moral respect. (shrink)

Self-identity, in the sense of who one now is or who one may become, is widely recognized as a matter of both discovery and creativity. This understanding of self-identity is reflected in the often repeated admonition of Friedrich Nietzsche to become who one is. Against the background of a brief discussion of Nietzsche's admonition, two claims are advance. First, noting the role others play in our becommg who we are helps explicate the notion that self-identity involves both discovery and creativity. (...) Second, emphasizing that self formation involves both discovery and creativity illummates several moral dimensions of the unfolding drama, perhaps the most important of which is the importance of creating a self which makes ongoing recreations of the self possible. (shrink)

Catholic Social Teaching on labor unions as promulgated by Pope Leo XIII and several of his successors is contrary to the form of unionism imposed on American workers and employers by the National Labor Relations Act. Since many of the coercive aspects of the NLRA are replicated in laws adopted in several to papal condemnation. The 1986 pastoral letter of the American Conference of Catholic Bishops promulgates views on unionism that are inconsistent with papal teaching. Frederic Bastiat, a French lay (...) Catholic and economist, correctly understood the issues of unionism and may have influenced the views of Leo XIII.L’enseignement social catholique sur les syndicats tel qu’il fut promulgué par le Pape Léon XIII et plusieurs de ses successeurs est contraire à la forme de syndicalisme imposée aux travailleurs et aux employés américains par la NLRA. Depuis beaucoup des aspects coercitifs de la NLRA ont été repris dans des lois adoptées.La lettre pastorale de 1986 de la Conférence Américaine des Evêques Catholiques promulgue des vues sur le syndicalisme qui sont contraires à l’enseignement papal. Frédéric Bastiat, catholique français et économiste, avait compris correctement les enjeux du syndicalisme et peut avoir influencé les vues de Léon XIII. (shrink)

Opposites in the drama.--Opposites in myself.

Currently the Enlightenment tradition is under such intense attack that Richard Bernstein calls the present mood a “rage against the enlightenment.” The purpose of this essay is to defend the deep spirit of the Enlightenment, the position that no idea, proposition, or principle should be beyond critical assessment. The defense involves an examination of and a response to two criticisms of the Enlightenment: first that the Enlightenment disdainfully rejects religion, particularly Christianity, and second that Enlightenment thinkers had a misguided confidence (...) in the powers of a-historical reason, i. e. the notion that humans have a rational capacity, unaffected by context or historical circumstance, to arrive at truth. (shrink)