We consider an extension of signaling games to the case of prediction, where one agent perceives the current state of the world and sends a signal. The second agent perceives this signal, and makes a prediction about the next state of the world. We suggest that such games may be the basis of a model for the evolution of successful theorizing about the world.

This paper examines beliefs about four aspects of ethical leadership – Character/Integrity, Altruism, Collective Motivation and Encouragement – in Germany and the United States using data from Project GLOBE (Global Leadership and Organizational Behavior Effectiveness) and a supplemental analysis. Within the context of a push toward convergence driven by the demands of globalization and the pull toward divergence underpinned by different cultural values and philosophies in the two countries, we focus on two questions: Do middle managers from the United States (...) and Germany differ in their beliefs about ethical leadership? And, do individuals from these two countries attribute different characteristics to ethical leaders? Results provide evidence that while German and US middle managers, on average, differed in the degree of endorsement for each aspect, they each endorsed Character/Integrity, Collective Motivation and Encouragement as important for effective leadership and had a more neutral view of the importance of Altruism . The findings are reviewed within the social-cultural context of each country. (shrink)

This paper examines beliefs about four aspects of ethical leadership –Character/Integrity, Altruism, Collective Motivation and Encouragement– in Germany and the United States using data from Project GLOBE (Global Leadership and Organizational Behavior Effectiveness) and a supplemental analysis. Within the context of a push toward convergence driven by the demands of globalization and the pull toward divergence underpinned by different cultural values and philosophies in the two countries, we focus on two questions: Do middle managers from the United States and Germany (...) differ in their beliefs about ethical leadership? And, do individuals from these two countries attribute different characteristics to ethical leaders? Results provide evidence that while German and US middle managers, on average, differed in the degree of endorsement for each aspect, they each endorsed Character/Integrity, Collective Motivation and Encouragement as important for effective leadership and had a more neutral view of the importance of Altruism. The findings are reviewed within the social-cultural context of each country. (shrink)

Despite the increasingly multinational nature of the workplace, there have been few studies of the convergence and divergence in beliefs about ethics-based leadership across cultures. This study examines the meaning of ethical and unethical leadership held by managers in six societies with the goal of identifying areas of convergence and divergence across cultures. More specifically, qualitative research methods were used to identify the attributes and behaviors that managers from the People’s Republic of China (the PRC), Hong Kong, the Republic of (...) China (Taiwan), the United States (the U.S.), Ireland, and Germany attribute to ethical and unethical leaders. Across societies, six ethical leadership themes and six unethical leadership themes emerged from a thematic analysis of the open-ended responses. Dominant themes for ethical and unethical leadership for each society are identified and examined within the context of the core cultural values and practices of that society. Implications for theory, research, and management practice are discussed. (shrink)

The purpose of this book is to discuss some critical components of Albert Shanker's work in American education, first as a teacher, then as president of the AFT. This is done in the context of the developments that took place in the United States since 1902 and the formation of the AFT in 1916. It focuses on the elements of leadership that were critical to the development of the United States from that time to the present. It presents these developments (...) in the context of Shanker's involvement since 1964. It also focuses on the dynamics of human relations cast in institutional settings. In doing so it presents features of a nation as it struggled with economic, social, and political issues that make society what it is. This discussion is done as a reflection of the need to strengthen democracy. The relations that Shanker has had with other people and organizations forms a critical component of the study. (shrink)

Drawing on constructionist theory, this study examines how the media portrayed five public reporting events initiated by the Fair Labor Association (FLA), considering whether the coverage encourages or discourages companies from undertaking a reporting initiative as part of their ethical management. Media coverage was limited but generally favorable across all five events. Coverage frequently included claims made by FLA spokespersons and provided basic facts about the organization and its activities. Extensive detail about labor violations found by monitors was often included. (...) Additional media coverage centered around themes of public reporting and transparency, an assessment of the FLA’s work, brand accountability and responsibility of corporations with regard to working conditions and labor standards, and specifics about the factory monitoring and partnering with factories and NGOs that is necessary to achieve change. Counter-claims brought question to the FLA’s efforts. Explanations about why the social condition exists were fairly limited, and thus, provided little insight into how the problems might be resolved. We discuss managerial implications regarding public reporting initiatives and media coverage, particularly regarding the countering effects of positive coverage and diminishing news stories. (shrink)

Since the fundamental challenge that I laid at the doorstep of the pluralists was to defend, with nonderivative models, a strong notion of genic cause, it is fatal that Waters has failed to meet that challenge. Waters agrees with me that there is only a single cause operating in these models, but he argues for a notion of causal ‘parsing’ to sustain the viability of some form of pluralism. Waters and his colleagues have some very interesting and important ideas about (...) the sciences, involving pluralism and parsing or partitioning causes, but they are ideas in search of an example. He thinks he has found an example in the case of hierarchical and genic selection. I think he has not. (shrink)

The master narrative of Apartheid South Africa created a specific identity for white boys and men and, together with this identity, a very particular role and place within the South African context. This identity was exemplified in the men who were conscripted into the military from 1967 until 1994, and who participated in operations on the border regions of Namibia and Angola as well as within local townships in the war of liberation against apartheid and minority rule. Many veterans have (...) been left grappling not only with the traumas associated with combat but also with the loss of their identities as war heroes in a country under changed political control. As a result, many of their personal stories and experiences of combat have been silenced by society at large and also, to varying degrees, within their own families, the Church, and among the younger generation who have grown up under a different dispensation. The conflict between vacillating narratives of villains who fought on the wrong side of history and victims of a closed socialisation system has supported the identity struggle faced by many veterans today. Against this backstory, this article explores the effects of storytelling as a trauma release using a narrative approach.Contribution: This article offers a contribution to the use of storytelling in pastoral conversations as a trauma release for untold stories. This insight links to the focus and scope of the journal as a pastoral narrative approach has been used under the umbrella of Practical Theology. (shrink)

Addressing a wide range of topics, from Newton to Post-Kuhnian philosophy of science, these essays critically examine themes that have been central to the influential work of philosopher Michael Friedman.

Davidson argues that metaphorical sentences express no propositional contents other than the explicit literal contents they express. He offers a causal account, on the one hand, as an explanation of the supposed additional content of a metaphor in terms of the effects metaphors have on hearers, and on the other hand, as a reason for the non-propositional nature of the “something more” that a metaphor is alleged to mean. Davidson’s account is meant to restrict the semantic notions of meaning, content, (...) and truth, to literal sentences. I argue that the Davidsonian causal account does not satisfactorily account for metaphor’s figurativeness, speakers’ assertion and hearers’ uptake of metaphor, and our discursive practices of using metaphors in disagreements and argumentation. I offer a non-compositional analysis of a semantic account of metaphor within which one can make sense of the applicability of the notions of meaning and content to metaphor. This analysis shows that metaphorical sentences have meanings other than, and in addition to, their literal meanings and what speakers can use them to mean. (shrink)

Is the quantum-logic interpretation dead? Its near total absence from current discussions about the interpretation of quantum theory suggests so. While mathematical work on quantum logic continues largely unabated, interest in the quantum-logic interpretation seems to be almost nil, at least in Anglo-American philosophy of physics. This paper has the immodest purpose of changing that fact. I shall argue that while the quantum-logic interpretation faces challenges, it remains a live option. The usual objections either miss the mark, or admit a (...) reasonable answer, or fail to decide the issue conclusively. (shrink)

In this paper, I take a critical look at the Davidsonian argument that metaphorical sentences do not express propositions because of the phenomenological experience—seeing one thing as another thing—involved in understanding them as metaphors. According to Davidson, seeing-as is not seeing-that. This verdict is aimed at dislodging metaphor from the position of being assessed with the semantic notions of propositions, meaning, and truth. I will argue that the phenomenological or perceptual experience associated with metaphors does not determine the propositional contentfulness (...) or truth-evaluability of metaphors. Truth-evaluability is not inconsistent but compatible with a perceptual model for metaphors. I argue for this partly by showing that seeing-as does not constitute understanding of metaphors when understanding is appropriately construed in terms of being able to use an expression. (shrink)

In a democracy, when a group of deliberators have a set of differing (and contrary) views and beliefs about a particular policy or action, p, a recommended course of action is for them to pursue, and ultimately reach, a consensus on p. The pursuit of consensus allows deliberators to ‘reach over the aisle’ in accommodating dissenting views through rational dialogue until a consensual agreement is reached by all the deliberators. What fuels this pursuit of consensus is the ‘will to consensus’—a (...) ‘frame of mind’ or a ‘disposition’ to resolve disagreements into a consensus. In this paper, I will raise some conceptual problems with positing a ‘will to consensus’ that is prior to, and supervenes on, the rational discussion of deliberators. Instead of a ‘will to consensus’, democratic theorists should be content with the minimal claim of a ‘will to dialogue’. (shrink)

In a democracy, when a group of deliberators have a set of differing (and contrary) views and beliefs about a particular policy or action, p, a recommended course of action is for them to pursue, and ultimately reach, a consensus on p. The pursuit of consensus allows deliberators to ‘reach over the aisle’ in accommodating dissenting views through rational dialogue until a consensual agreement is reached by all the deliberators. What fuels this pursuit of consensus is the ‘will to consensus’—a (...) ‘frame of mind’ or a ‘disposition’ to resolve disagreements into a consensus. In this paper, I will raise some conceptual problems with positing a ‘will to consensus’ that is prior to, and supervenes on, the rational discussion of deliberators. Instead of a ‘will to consensus’, democratic theorists should be content with the minimal claim of a ‘will to dialogue’. (shrink)

The purpose of this study was to map the distribution of publications on plagiarism among higher educational institutions in sub-Saharan Africa (SSA). Studies reviewed were based on 171 plagiarism related publications within a decade (2012–2022). Findings revealed that most plagiarism related articles were published in 2016. Additionally, a majority of the studies (53) were from Nigeria and Ghana (23). Most of the articles focused on students’ and faculty’s awareness of plagiarism, and institutional prevention of plagiarism, but were rather marginal on (...) challenges involved in preventing plagiarism, as well as effects of plagiarism. Dominant forms of plagiarism were self-plagiarism, branded plagiarism and commission plagiarism. However, major causes of plagiarism comprised easy access to digital information and resources; poor supervision of students; pressure on academics to publish for promotion; and insufficient skills development regarding ethical academic writing. Additionally, plagiarism preventive software and policies on plagiarism were the main ways of preventing plagiarism. Finally, in fighting plagiarism, higher educational institutions in SSA encountered challenges such as lack of well-trained academic experts to detect and report plagiarism cases; reluctance on the part of technical administrative staff to investigate works for traces of plagiarism; and low plagiarism detection skills from project supervisors. Based on the findings, recommendations are made to stakeholders for future research, policy and practice. (shrink)

BackgroundTo limit selective and incomplete publication of the results of clinical trials, registries including ClinicalTrials.gov were introduced. The ClinicalTrials.gov registry added a results database in 2008 to enable researchers to post the results of their trials as stipulated by the Food and Drug Administration Amendment Act of 2007. This study aimed to determine the direction and magnitude of any change in publication proportions of registered breast cancer trials that occurred since the inception of the ClinicalTrials.gov results database.MethodsA cross-sectional study design (...) was employed using ClinicalTrials.gov, a publicly available registry/results database as the primary data source. Registry contents under the subcategories ‘Breast Neoplasms’ and ‘Breast Neoplasms, Male’ were downloaded on 1 August 2015. A literature search for included trials was afterwards conducted using MEDLINE and DISCOVER databases to determine publication status of the registered breast cancer trials.ResultsNearly half (168/340) of the listed trials had been published, with a median time to publication of 24 months (Q1 = 14 months, Q3 = 42 months). Only 86 trials were published within 24 months of completion. There was no significant increase in publication proportions of trials that were completed before the introduction of the results database compared to those completed after (OR = 1.00, 95 % CI =.61 to 1.63; adjusted OR = 0.84, 95 % CI =.51 to 1.39). Characteristics associated with publication included trial type (observational versus interventional adjusted OR =.28, 95 % CI =.10 to.74) and completion/termination status (terminated versus completed adjusted OR =.22, 95 % CI =.09 to.51).ConclusionsLess than a half of breast cancer trials registered in ClinicalTrials.gov are published in peer-reviewed journals. (shrink)

In this paper, I take a critical look at the Davidsonian argument that metaphorical sentences do not express propositions because of the phenomenological experience—seeing one thing as another thing—involved in understanding them as metaphors. According to Davidson, seeing-as is not seeing-that. This verdict is aimed at dislodging metaphor from the position of being assessed with the semantic notions of propositions, meaning, and truth. I will argue that the phenomenological or perceptual experience associated with metaphors does not determine the propositional contentfulness (...) or truth-evaluability of metaphors. Truth-evaluability is not inconsistent but compatible with a perceptual model for metaphors. I argue for this partly by showing that seeing-as does not constitute understanding of metaphors when understanding is appropriately construed in terms of being able to use an expression. (shrink)

This study assessed challenges faced by researchers with the informed consent process (ICP). In‐depth interviews were used to explore challenges encountered by Investigators, Research assistants, Institutional Review Board members and other stakeholders. An electronic questionnaire was also distributed, consisting of Likert‐scale responses to questions on adherence to the ICP, which were derived from the Helsinki Declaration and an informed consent checklist of the US Department of Health and Human Research (HSS). Responses were weighted numerically and scores calculated for each participant. (...) The median score of the level of adherence to the informed consent process was 93%. Most of the respondents (60%) cited the lack of time for the ICP to be a challenge, with 65% indicating a lengthy consent document to be the main challenge with the informed consent document. Challenges with language and communication were the dominant theme among informants. Despite the high adherence of Ghanaian researchers and research assistants to the ICP, challenges are still prevalent, requiring diligent and continuous efforts in research implementation. (shrink)

The individual informed consent model remains critical to the ethical conduct and regulation of research involving human beings. Parental informed consent process in a rural setting of northern Ghana was studied to describe comprehension and retention among parents as part of the evaluation of the existing informed consent process.

Realist synthesis is often offered as a useful strategy to understand intervention complexity. Its unique selling point is its basis in a critical realist philosophy of science. However, we argue t...

The conceptual structure of orthodox quantum mechanics has not provided a fully satisfactory and coherent description of natural phenomena. With particular attention to the measurement problem, we review and investigate two unorthodox formulations. First, there is the model advanced by GRWP, a stochastic modification of the standard Schrödinger dynamics admitting statevector reduction as a real physical process. Second, there is the ontological interpretation of Bohm, a causal reformulation of the usual theory admitting no collapse of the statevector. Within these two (...) seemingly quite different approaches, we discuss in a comparative manner, several points: The meaning of the state vector, the status of quantum probability, the legitimacy of attributing macro objective properties to physical systems, and the possibility of retrieving the classical limit. Finally, we consider aspects of non-locality and relevant difficulties with formulating a relativistic generalization of the two approaches. (shrink)

An outstanding problem in so-called modal interpretations of quantum mechanics has been the specification of a dynamics for the properties introduced in such interpretations. We develop a general framework (in the context of the theory of stochastic processes) for specifying a dynamics for interpretations in this class, focusing on the modal interpretation by Vermaas and Dieks. This framework admits many empirically equivalent dynamics. We give some examples, and discuss some of the properties of one of them. This approach is applicable (...) to a wider class of theories, in particular, those using (discrete) strict effective—as in decoherence theory—superselection rules. (shrink)

This book examines in detail two of the fundamental questions raised by quantum mechanics. First, is the world indeterministic? Second, are there connections between spatially separated objects? In the first part, the author examines several interpretations, focusing on how each proposes to solve the measurement problem and on how each treats probability. In the second part, the relationship between probability (specifically determinism and indeterminism) and non-locality is examined, and it is argued that there is a non-trivial relationship between probability and (...) non-locality. The author then re-examines some of the interpretations of part one of the book in the light of this argument, and considers how they fare with regard to locality and Lorentz invariance. The book will appeal to anyone with an interest in the interpretation of quantum mechanics, including researchers in the philosophy of physics and theoretical physics, as well as graduate students in those fields. (shrink)

Economist Frank Knight drew a distinction between decisions under risk and decisions under uncertainty. Despite the significance of this distinction for decision theory, we argue that there has been inadequate attention to the difficulties involved in classifying decision situations into these categories. Using the risk assessment of carbon nanotubes as an example, we show that it is often unclear whether there is adequate information to classify a decision situation as being under risk as opposed to uncertainty. We conclude by providing (...) two suggestions for responding to these difficulties: treating decisions as real-world experiments; and promoting broadly based deliberation about quantitative information. (shrink)

Progressive supranuclear palsy is a movement disorder with prominent tau neuropathology. Brain diseases with abnormal tau deposits are called tauopathies, the most common of which is Alzheimer's disease. Environmental causes of tauopathies include repetitive head trauma associated with some sports. To identify common genetic variation contributing to risk for tauopathies, we carried out a genome-wide association study of 1,114 individuals with PSP and 3,247 controls followed by a second stage in which we genotyped 1,051 cases and 3,560 controls for the (...) stage 1 SNPs that yielded P ≤ 10-3. We found significant previously unidentified signals associated with PSP risk at STX6, EIF2AK3 and MOBP. We confirmed two independent variants in MAPT affecting risk for PSP, one of which influences MAPT brain expression. The genes implicated encode proteins for vesicle-membrane fusion at the Golgi-endosomal interface, for the endoplasmic reticulum unfolded protein response and for a myelin structural component. © 2011 Nature America, Inc. All rights reserved. (shrink)

The neural cell adhesion molecule (N‐CAM) is believed to be a key regulator of adhesive events in the nervous system and skeletal muscle. The recent isolation of N‐CAM cDNAs from different tissues has identified a high degree of diversity in primary amino acid sequence between different isoforms. In this article, we review these recent studies and discuss methods for unravelling the functional consequences of the generation of multiple N‐CAM polypeptides using gene transfection approaches.

This essay is a discussion of the philosophical and foundational issues that arise in non-relativistic quantum theory. After introducing the formalism of the theory, I consider: characterizations of the quantum formalism, empirical content, uncertainty, the measurement problem, and non-locality. In each case, the main point is to give the reader some introductory understanding of some of the major issues and recent ideas.

Is the quantum-logic interpretation dead? Its near total absence from current discussions about the interpretation of quantum theory suggests so. While mathematical work on quantum logic continues largely unabated, interest in the quantum-logic interpretation seems to be almost nil, at least in Anglo-American philosophy of physics. This paper has the immodest purpose of changing that fact. I shall argue that while the quantum-logic interpretation faces challenges, it remains a live option. The usual objections either miss the mark, or admit a (...) reasonable answer, or fail to decide the issue conclusively. (shrink)

In this article I examine the view, common amongst several contemporary legal positivists, that rules of recognition are to be understood as conventional rules of some kind. The article opens with a discussion of H.L.A. Hart's original account of the rule of recognition in the 1st edn of The Concept of Law and argues that Hart did not view the rule of recognition as a conventional rule in that account. I then discuss Hart's apparent turn towards a conventionalist understanding of (...) the rule of recognition in the ‘Postscript’ to the 2nd edn of The Concept of Law, and attempt to cast doubt on the strength of Hart's commitment to such a turn, and on the reasons prompting him to make it. Finally, I consider one of the most interesting contemporary conventionalist accounts of rules of recognition, namely Andrei Marmor's view that such rules should be understood as the constitutive conventions of partly autonomous social practices. My aim in this part of the article is to compare Marmor's account with my earlier interpretation of Hart's views, and to consider whether Marmor's account truly is conventionalist in character and whether it provides us with a persuasive conventionalist understanding of rules of recognition. (shrink)

Background Current requirements for ethical research in Canada, specifically the standard of active or signed parental consent, can leave Indigenous children and youth with inequitable access to research opportunities or health screening. Our objective was to examine the literature to identify culturally safe research consent processes that respect the rights of Indigenous children, the rights and responsibilities of parents or caregivers, and community protocols. Methods We followed PRISMA guidelines and Arksey and O’Malley’s approach for charting and synthesizing evidence. We searched (...) MEDLINE, PsycINFO, ERIC, CINAHL, Google Scholar, Web of Science, Informit Indigenous Collection, Bibliography of Native North Americans, and Sociological Abstracts. We included peer-reviewed primary and theoretical research articles written in English from January 1, 2000, to March 31, 2022, examining Indigenous approaches for obtaining informed consent from parents, families, children, or youth. Eligible records were uploaded to Covidence for title and abstract screening. We appraised the findings using a Two-Eyed Seeing approach. These findings were inductively coded using NVivo 12 and analyzed thematically. Results We identified 2,984 records and 11 eligible studies were included after screening. Three key recommendations emerged: addressing tensions in the ethics of consent, embracing wise practices, and using relational approaches to consent. Tensions in consent concerned Research Ethics Board consent requirements that fall short of protecting Indigenous children and communities when culturally incongruent. Wise practices included allowing parents and children to consent together, land-based consenting, and involving communities in decision-making. Using relational approaches to consent embodied community engagement and relationship building while acknowledging consent for Indigenous children cannot be obtained in isolation from family and community. Conclusions Very few studies discussed obtaining child consent in Indigenous communities. While Indigenous communities are not a monolith, the literature identified a need for community-driven, decolonized consent processes prioritizing Indigenous values and protocols. Further research is needed to examine nuances of Indigenized consent processes and determine how to operationalize them, enabling culturally appropriate, equitable access to research and services for all Indigenous children. (shrink)

Bohr’s reply to Einstein, Podolsky, and Rosen’s argument for the incompleteness of quantum theory is notoriously difficult to unravel. It is so diffcult, in fact, that over 60 years later, there remains important work to be done understanding it. Work by Fine , Beller and Fine , and Beller goes a long way towards correcting earlier misunderstandings of Bohr’s reply. This essay is intended as a contribution to the program of getting to the truth of the matter, both historically and (...) philosophically. In a paper of this length, a full account of Bohr’s reply is impossible, and so I shall focus on one issue where it seems further clarification is required, namely, Bohr’s attempt to illustrate EPR’s argument by means of a thought experiment. In addition, I shall attempt to clarify a few other points which, however minor, have apparently contributed to misunderstandings of Bohr’s position. As the title of this paper suggests, an account of these few points does not constitute an account of Bohr’s reply, but it is an important step in that direction. (shrink)

The improvement of the welfare of inhabitants of arid and semi-arid lands, either through the enhancement of existing livelihoods or the promotion of alternative ones, and their potential constraints are discussed. Alternative livelihoods are discussed under regenerative and extractive themes with respect to environmental stability. Regenerative (i.e., non-extractive) livelihoods include activities like apiculture, poultry keeping, pisciculture, silkworm production, drought tolerant cash cropping, horticulture, community wildlife tourism, processing of livestock and crop products, agro-forestry for tree products, and micro-enterprises in the informal (...) sector. Examples of livelihoods that are extractive or potentially so include timber production, woodcarving, basketry, brick making, sand scooping, and charcoal making. Suggestions to improve these livelihoods in a sustainable manner are offered. (shrink)

Questions concerning the aims and aspirations, criteria of success and even proper delineation of the subject matter of theories of law have given rise to some of the most intractable and contentious debates in contemporary legal philosophy. In this article, I outline my vision of the remit and character of legal philosophy, with particular emphasis on the methodological approach with which I am most concerned in my own work, and which I refer to here as ‘indirectly evaluative legal philosophy’. I (...) do so partly in response to some vehement criticisms of, and, in my view, significant mischaracterisations of, IELP and cognate approaches to theorising about law, which feature in some recent jurisprudential debates. My position supports a pluralistic methodological outlook which emphasises disciplinary and sub-disciplinary complementarity as an alternative to the febrile adversarialism sometimes afflicting our discipline. For, in my view, ours is a broad church, and all theoretical accounts able to illu.. (shrink)

Quantum mechanics has sometimes been taken to be an empiricist (vs. realist) theory. I state the empiricist's argument, then outline a recently noticed type of measurement--protective measurement--that affords a good reply for the realist. This paper is a reply to scientific empiricism (about quantum mechanics), but is neither a refutation of that position, nor an argument in favor of scientific realism. Rather, my aim is to place realism and empiricism on an even score in regards to quantum theory.

I review the modal interpretation of quantum mechanics, some versions of which rely on the biorthonormal decomposition of a statevector to determine which properties are physically possessed. Some have suggested that these versions fail in the case of inaccurate measurements, i.e., when one takes tails of the wavefunction into account. I show that these versions of the modal interpretation are satisfactory in such cases. I further suggest that a more general result is possible, namely, that these versions of the modal (...) interpretation never encounter the sort of trouble that has been claimed to arise in the case of inaccurate measurement. (shrink)

Attempting to teach theater in an English Literature course is a daunting prospect. A far cry from the highly individual experience of reading a novel or poem, theater is both a visual and communal...

There is evidence that asexual reproduction has a long-term disadvantage when compared to sexual reproduction. This disadvantage is usually assumed to arise from the more efficient incorporation of advantageous mutations by sexual populations. We consider here the effect on asexual and sexual populations of changes in the fitness of harmful mutations. It is shown that the re-establishment of equilibrium following environmental change is generally faster in sexual populations, and that the mutational load experienced by the sexual population can be significantly (...) less during this period than that experienced by an asexual one. Changes in the fitness of harmful mutations may therefore impose a greater long-term disadvantage on asexual populations than those which are sexual. (shrink)