The Huntington, Salamonie, and Mississinewa reservoirs in northern Indiana control seasonal flooding in the Upper Wabash River drainage area. They appeared in the 1960s after a long period of study and planning in response to large-scale flooding in central and southern Indiana in the first half of the twentieth century. Their construction disrupted the pattern of human ecology along the Wabash and its tributaries for many of the watershed’s inhabitants. Supporters touted the projects’ economic and recreational benefits, while opponents experienced (...) the change as a desecration of sacred space. The projects saved millions in property damage and perhaps many human lives, but at the cost of an enduring sense of place amid the advent of a new regime of scientific watershed management and state control over natural resources in the region. (shrink)

In 1988, the control of the American Psychological Association shifted to those advocating the interests of professional practice and a substantial segment of the scientific community in psychology seceded to form the American Psychological Society, devoted to scientific psychology and scientific-based practice. In this climate, it has become increasingly difficult for scientists and practitioners to maintain analytical discussions of the philosophical and methodological issues that divide these two groups. For over 25 years, the authors have been fortunate to have the (...) professional and intellectual luxury of just such a discussion, and present here a dialogue that attempts to capture their initial stark differences in perspective and the process by which differences have been clarified, and areas of agreement established. 2012 APA, all rights reserved). (shrink)

The value relevance of corporate social responsibility performance disclosures for financial markets participants remains uncertain despite advances in the literature and the recent proliferation of CSR disclosures around the world. Using an experimental approach involving MBA students at universities in the United States and Lebanon, we study the value relevance of CSR disclosures by testing whether they affect participants’ personal portfolio management investment decisions. We also examine whether the degree to which the CSR disclosures affect these decisions is influenced by (...) corporate governance quality. To examine these issues, we examine the effect of environmental performance on investment decisions in Experiment 1, and the effect of labor performance on investment decisions in Experiment 2. Results from both experiments show that investment decisions are affected by CSR performance. Analysis shows that governance strength exerts a marginal effect on the investment decision only when CSR performance is strong. Lebanese participants appear to be more sensitive to weak performance than U.S. participants. Overall, our findings extend the CSR disclosures literature by documenting the value relevance of CSR performance for financial markets participants’ decision making. These findings also extend the governance literature by documenting that consistent with attribution theory, the effects of governance quality are contingent upon the information and decision context, and that efforts to decontextualize governance may be counterproductive. (shrink)

From the perspective of ecological psychology, perception and action are not separate, linear, and mechanistic processes that refer to the immediate present. Rather, they are reciprocal and continuous and refer to the impending future. Therefore, from the perspective of ecological psychology, delays in perception and action are impossible, and delay compensation mechanisms are unnecessary.

Wynn suggests that the imposition of symmetry on stone tools is indicative of the evolutionary development of cognitive abilities of the tool makers, particularly that of creating mental images. I suggest that it is more likely indicative of the evolutionary development of the perceptual ability to detect resources for behavior of hand-held objects.

Order and pattern abound in the natural world. However, whereas the emergence of order and pattern in physical or biological systems is typically explained by means of self-organization and field dynamics, the emergence of order and pattern in psychological systems is typically explained by means of mediating endogenous entities or mechanisms . I review a self-organization and field-based approach to understanding order and patterns in a variety of physical and biological systems. I then provide a sketch of recent research that (...) has applied such an approach to understanding order and pattern in psychological phenomena . Such an approach promises to reduce the explanatory burden associated with psychological phenomena and brings explanations of such phenomena into greater congruence with natural law. 2012 APA, all rights reserved). (shrink)

In the "cratylus", Plato presents two theories about the correctness of names, I.E., Names are correct by nature and names are correct by convention. In this paper, I argue that plato holds both views because he recognizes that the word 'name' is ambiguous as between type and token. Name tokens (individual strings of marks and noises) are conventional for plato. But name types (the role played by the tokens or the concept expressed by the tokens) are not conventional for plato.

Rather than proclaiming the "death of God," in the fashion of Nietzsche's madman, F. LeRon Shults proudly proclaims the "birth of God" in his incendiary, radically iconoclastic book Theology after the Birth of God. Shults argues, drawing on the multidisciplinary findings of the biocultural study of religion, that the commonplace belief in supernatural agents is the result of a variety of evolved cognitive and coalitional mechanisms that cause human beings to overdetect agency and that contribute to in-group cohesion—traits that would (...) have been selected because they aided the survival of early hominids living in hunter-gatherer societies, but that are maladaptive in our contemporary context. In his most recent book... (shrink)

In contrast to the views put forth by Stein & Glasier, we support the use of inbred strains of rodents in studies of the immunobiology of neural transplants. Inbred strains demonstrate homology of the major histocompatibility complex (MHC). Virtually all experimental work in transplantation immunology is performed using inbred strains, yet very few published studies of immune rejection in intracerebral grafts have used inbred animals.

Theory in Africa, Africa in Theory explores the place of Africa in archaeological theory, and the place of theory in African archaeology. The centrality of African models in reconstructions is explored, focusing on materiality and agency in the past. The differences between how African models are used in western theoretical discourse and the use of that theory within Africa are also highlighted, as a means to explore the nature of theory itself. Thus, this dual purposed volume is a timely intervention (...) into archaeological theory, deconstructing the taken-for-granted foundations of the ways we approach the past. (shrink)

We give resource bounded versions of the Completeness Theorem for propositional and predicate logic. For example, it is well known that every computable consistent propositional theory has a computable complete consistent extension. We show that, when length is measured relative to the binary representation of natural numbers and formulas, every polynomial time decidable propositional theory has an exponential time (EXPTIME) complete consistent extension whereas there is a nondeterministic polynomial time (NP) decidable theory which has no polynomial time complete consistent extension (...) when length is measured relative to the binary representation of natural numbers and formulas. It is well known that a propositional theory is axiomatizable (respectively decidable) if and only if it may be represented as the set of infinite paths through a computable tree (respectively a computable tree with no dead ends). We show that any polynomial time decidable theory may be represented as the set of paths through a polynomial time decidable tree. On the other hand, the statement that every polynomial time decidable, relative to the tally representation of natural numbers and formulas, is equivalent to P = NP. For predicate logic, we develop a complexity theoretic version of the Henkin construction to prove a complexity theoretic version of the Completeness Theorem. Our results imply that that any polynomial space decidable theory △ possesses a polynomial space computable model which is exponential space decidable and thus △ has an exponential space complete consistent extension. Similar results are obtained for other notions of complexity. (shrink)

We consider the version of Pure Inductive Logic which obtains for the language with equality and a single unary function symbol giving a complete characterization of the probability functions on this language which satisfy Constant Exchangeability.

Although we agree with Hommel et al. that perception and action refer to one another, we disagree that they do so via a code. Gibson (1966; 1979) attempted to frame perception-action as a field phenomenon rather than as a particle phenomenon. From such a perspective, perception and action are adjoint, mutually interacting through an information field, and codes are unnecessary.

We define certain properties of subsets of models of arithmetic related to their codability in end extensions and elementary end extensions. We characterize these properties using some more familiar notions concerning cuts in models of arithmetic.

The first-order theory of the lattice of recursively enumerable closed subsets of an effective topological space is proved undecidable using the undecidability of the first-order theory of the lattice of recursively enumerable sets. In particular, the first-order theory of the lattice of recursively enumerable closed subsets of Euclidean n -space, for all n , is undecidable. A more direct proof of the undecidability of the lattice of recursively enumerable closed subsets of Euclidean n -space, n ⩾ 2, is provided using (...) the method of reduction and the recursive inseparability of the set of all formulae satisfiable in every model of the theory of SIBs and the set of all formulae refutable in some finite model of the theory of SIBs. (shrink)

An ω-language is a set of infinite sequences on a countable language, and corresponds to a set of real numbers in a natural way. Languages may be described by logical formulas in the arithmetical hierarchy and also may be described as the set of words accepted by some type of automata or Turing machine. Certain families of languages, such as the equation image languages, may enumerated as P0, P1, … and then an index set associated to a given property R (...) of languages is just the set of e such that Pe has the property. The complexity of index sets for 7 types of languages is determined for various properties related to the size of the language. (shrink)

We investigate the complexity of finding solutions to infinite recursive constraint satisfaction problems. We show that, in general, the problem of finding a solution to an infinite recursive constraint satisfaction problem is equivalent to the problem of finding an infinite path through a recursive tree. We also identify natural classes of infinite recursive constraint satisfaction problems where the problem of finding a solution to the infinite recursive constraint satisfaction problem is equivalent to the problem of finding an infinite path through (...) finitely branching recursive trees or recursive binary trees. There are a large number of results in the literature on the complexity of the problem of finding an infinite path through a recursive tree. Our main result allows us to automatically transfer such results to give equivalent results about the complexity of the problem of finding a solution to a recursive constraint satisfaction problem. (shrink)

A computable graph is constructed which is not computably isomorphic to any polynomial-time graph with a standard universe . Conditions are given under which a computable graph is computably isomorphic to a polynomial-time graph with a standard universe — for example, if every vertex has finite degree. Two special types of graphs are studied. It is shown that any computable tree is recursively isomorphic to a p-time tree with standard universe and that any computable equivalence relation is computably isomorphic to (...) a p-time equivalence relation with standard universe. (shrink)

Index sets are used to measure the complexity of properties associated with the differentiability of real functions and the existence of solutions to certain classic differential equations. The new notion of a locally computable real function is introduced and provides several examples of Σ04 complete sets.

In this paper, we study the lattice of r.e. subspaces of a recursively presented vector space V ∞ with regard to the various complexity-theoretic speed-up properties such as speedable, effectively speedable, levelable, and effectively levelable introduced by Blum and Marques. In particular, we study the interplay between an r.e. basis A for a subspace V of V ∞ and V with regard to these properties. We show for example that if A or V is speedable , then V is levelable (...) . We also show that if A is an r.e. subset of a recursive basis for V ∞ , then A is levelable iff V is speedable while it is not the case that A is levelable iff V is speedable. We also provide several contrasts between the lattice of r.e. subspaces and the lattice of r.e. sets with respect to these speed-up properties. For example, every maximal set is levelable but we show that there exist supermaximal spaces which are nonspeedable in all possible r.e. degrees as well as supermaximal spaces which are levelable in all r.e. degrees which contain levelable sets. (shrink)

Corporate social responsibility (CSR) is a dramatically expanding area of activity for managers and academics. Consumer demand for responsibly produced and fair trade goods is swelling, resulting in increased demands for CSR activity and information. Assets under professional management and invested with a social responsibility focus have also grown dramatically over the last 10 years. Investors choosing social responsibility investment strategies require access to information not provided through traditional financial statements and analyses. At the same time, a group of mainstream (...) institutional investors has encouraged a movement to incorporate environmental, social, and governance information into equity analysis, and multi-stakeholder groups have supported enhanced business reporting on these issues. The majority of research in this area has been performed on European and Australian firms. We expand on this literature by exploring the CSR disclosure practices of a size- and industry-stratified sample of 50 publicly traded U.S. firms, performing a content analysis on the complete identifiable public information portfolio provided by these firms during 2004. CSR activity was disclosed by most firms in the sample, and was included in nearly half of public disclosures made during that year by the sample firms. Areas of particular emphasis are community matters, health and safety, diversity and human resources (HR) matters, and environmental programs. The primary venues of disclosure are mass media releases such as corporate websites and press releases, followed closely by disclosures contained in mandatory filings. Consistent with prior research, we identify industry effects in terms of content, emphasis, and reporting format choices. Unlike prior research, we can offer only mixed evidence on the existence of a size effect. The disclosure frequency and emphasis is significantly different for the largest one-fifth of the firms, but no identifiable trends are present within the rest of the sample. There are, however, identifiable size effects with respect to reporting format choice. Use of websites is positively related to firm size, while the use of mandatory filings is negatively related to firm size. Finally, and also consistent with prior literature, we document a generally self-laudatory tone in the content of CSR disclosures for the sample firms. (shrink)

Access to a deep pool of talent is essential to the success of every professional services firm. The supply of that talent is contingent upon the available rewards for the exercise of that talent, and both the existence of the potential rewards and the beliefs that individuals hold about the existence of the rewards affect the decision to remain in the field. One structural factor that may affect the judgment about whether to remain in a profession concerns promotions based on (...) the gender of the employee. In this study, we examine the “glass ceiling” within the context of the accounting profession. While advances have been made within the accounting profession to address the glass ceiling, the continued existence—and perceptions about the continued existence—of the issue exert adverse effects upon the available talent pool and may create long-term problems for the profession. In this study, we investigate glass ceiling perceptions among a large sample of female accounting professionals employed in accounting; the sample includes both public accountants, and those employed in industry accounting. Our study yields the finding of beliefs in bias-driven effects, structural effects, and cultural effects among these accounting professionals. Glass ceiling perceptions are also influenced by several demographic factors. Furthermore, accounting professionals employed by industry are more likely to report a glass ceiling within their firms than accounting professionals employed by public accounting firms. The findings are of interest to researchers who explore gender-related issues in professional service firms such as the field of accounting, and to senior members of practice who are tasked with ensuring the integrity and quality of the talent pool and the equitable distribution of rewards to employees. (shrink)

We develop a theory of LOGSPACE structures and apply it to construct a number of examples of Abelian Groups which have LOGSPACE presentations. We show that all computable torsion Abelian groups have LOGSPACE presentations and we show that the groups ${\mathbb {Z}, Z(p^{\infty})}$ , and the additive group of the rationals have LOGSPACE presentations over a standard universe such as the tally representation and the binary representation of the natural numbers. We also study the effective categoricity of such groups. For (...) example, we give conditions are given under which two isomorphic LOGSPACE structures will have a linear space isomorphism. (shrink)

Recent years have featured a spate of regulatory action pertaining to the development and/or disclosure of corporate governance structures in response to financial scandals resulting in part from governance failures. During the same period, corporate governance activists and institutional investors increasingly have called for increased voluntary governance disclosure. Despite this attention, there have been relatively few comprehensive studies of governance disclosure practices and response to the regulation. In this study, we examine a sample of 50 U.S. firms and their public (...) disclosure packages from 2004. We find a high degree of variability in the presentation and reporting format choices for many elements of the governance structure. This variability includes several items for which disclosure is mandated by regulators or legislative action. In particular, smaller firms offer fewer disclosures pertaining to independence, board selection procedures, and oversight of management (including whistleblowing procedures). There are also trends associated with board characteristics: boards that are less independent offer fewer disclosures of independence and management oversight matters. Moreover, large firms provide more disclosures of independence standards, board selection procedures, audit committee matters, management control systems, other committee matters, and whistleblowing procedures but do not appear to have a strictly superior information environment when compared to smaller firms. The findings raise questions about compliance with regulatory requirements and the degree to which conflicts of interest between managers and directors are being controlled. While there have been notable improvements in the information environment of governance disclosures, there remain structural issues that may possess negative ramifications for stakeholders. (shrink)