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Explanation
Kinds of Explanation Selected AbstractsTHE REVIVAL OF CULTURAL EXPLANATION IN ECONOMICSECONOMIC AFFAIRS, Issue 4 2003E. L. Jones Cultural explanations of economic change were largely dropped for a generation, as economists rejected their inconclusiveness and other social scientists labelled them as politically incorrect. Peter Bauer, however, expressed disquiet at the way deep influences like culture were being ignored in economic analysis. This paper discusses why high-profile attention has now turned back to culture. It does not find the expositions offered to be very persuasive but nevertheless agrees that Bauer's unease was understandable and describes other recent academic studies that are more promising. [source] INTERSEXUAL COMPETITION AS AN EXPLANATION FOR SEX-RATIO AND DISPERSAL BIASES IN POLYGYNOUS SPECIESEVOLUTION, Issue 11 2004Henri Leturque Abstract In polygynous mammals, it is commonly observed that both sex ratios at birth and dispersal are male biased. This has been interpreted as resulting from low female dispersal causing high female local resource competition, which would select for male-biased sex ratios. However, a female-biased sex ratio can be selected despite lower female than male-biased dispersal. This will occur if the low female dispersal is close to the optimal dispersal rate, while the male dispersal is not close to the optimal dispersal rate. The actual outcome depends on the joint evolution of sex-biased dispersal and sex ratio. Earlier analyses of joint evolution imply that there will be no sex-ratio nor dispersal biases at the joint evolutionarily stable strategy, thus they do not explain the data. However, these earlier analyses assume no intersexual competition for resources. Here, we show that when males and females compete with each other for access to resources, male-biased dispersal will be associated with male-biased birth sex ratio, as is commonly observed. A trend toward male-biased birth sex ratios is also expected if there is intersexual local resource competition and if birth sex ratio is constrained so that it cannot depart from balanced sex ratio. [source] FIELD OBSERVATION, ARCHIVES, AND EXPLANATIONGEOGRAPHICAL REVIEW, Issue 1-2 2001KARL B. RAITZ First page of article [source] EXPLICATION, EXPLANATION, AND HISTORYHISTORY AND THEORY, Issue 2 2008CARL HAMMER ABSTRACT To date, no satisfactory account of the connection between natural-scientific and historical explanation has been given, and philosophers seem to have largely given up on the problem. This paper is an attempt to resolve this old issue and to sort out and clarify some areas of historical explanation by developing and applying a method that will be called "pragmatic explication" involving the construction of definitions that are justified on pragmatic grounds. Explanations in general can be divided into "dynamic" and "static" explanations, which are those that essentially require relations across time and those that do not, respectively. The problem of assimilating historical explanations concerns dynamic explanation, so a general analysis of dynamic explanation that captures both the structure of natural-scientific and historical explanation is offered. This is done in three stages: In the first stage, pragmatic explication is introduced and compared to other philosophical methods of explication. In the second stage pragmatic explication is used to tie together a series of definitions that are introduced in order to establish an account of explanation. This involves an investigation of the conditions that play the role in historiography that laws and statistical regularities play in the natural sciences. The essay argues that in the natural sciences, as well as in history, the model of explanation presented represents the aims and overarching structure of actual causal explanations offered in those disciplines. In the third stage the system arrived at in the preceding stage is filled in with conditions available to and relevant for historical inquiry. Further, the nature and treatment of causes in history and everyday life are explored and related to the system being proposed. This in turn makes room for a view connecting aspects of historical explanation and what we generally take to be causal relations. [source] 1. NARRATIVE EXPLANATION AND ITS MALCONTENTSHISTORY AND THEORY, Issue 1 2008DAVID CARR ABSTRACT In this paper I look at narrative as a mode of explanation and at various ways in which the explanatory value of narrative has been criticized. I begin with the roots of narrative explanation in everyday action, experience, and discourse, illustrating it with the help of a simple example. I try to show how narrative explanation is transformed and complicated by circumstances that take us beyond the everyday into such realms as jurisprudence, journalism, and history. I give an account of why narrative explanation normally satisfies us, and how or in what sense it actually explains. Then I consider how narrative is challenged and rejected as a mode of explanation in many scientific and other contexts and why attempts are made to replace it with something else. I try to evaluate the nature and sources of these challenges, and I describe this controversy over narrative against the historical background of its emergence. My paper ends with a pragmatic defense of narrative explanation against these challenges. [source] A PHYSIOLOGICAL EXPLANATION FOR AN UNEXPECTED BENEFIT OF CAROTID ENDARTERECTOMYJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 8 2007Emre Noteroglu MD No abstract is available for this article. [source] IS THERE AN ECOPHYSIOLOGICAL EXPLANATION FOR THE GAMETOPHYTE,TETRASPOROPHYTE RATIO IN GELIDIUM SESQUIPEDALE (RHODOPHYTA)?,JOURNAL OF PHYCOLOGY, Issue 2 2006Raquel Carmona In the fall, when 61% of the fronds of the Gelidium sesquipedale (Clem.) Born. et Thur. population located in Albufeira (southern Portugal) were reproductive, about 90% of these fronds were tetrasporophytes, whereas an equal percentage of female and male gametophytes was found (5%). The comparison of physiological performances of the reproductive phases (males, females and tetrasporophytes) did not reveal a physiological advantage of tetrasporic fronds. There were no significant differences either in the photosynthesis, nitrogen uptake, nitrate reductase activity, or biochemical composition of adult fronds. On the other hand, vegetative recruitment and spore production in the laboratory were significantly different. The re-attachment to calcareous substrate and the subsequent rhizoidal growth were faster in tetrasporophytes. Particular levels of temperature, rather than irradiance, had an important effect on the phase differences in the spore release, attachment, and germination rates. Significant results were the higher release of carpospores at all irradiances at 17°C, and the higher attachment percentage of carpospores at 13°C versus tetraspores. Under higher temperatures (21°C), tetraspores showed higher attachment rates while carpospores germinated more. G. sesquipedale cystocarps released carpospores for 2 months, while tetrasporangia stopped shedding tetraspores after 1 month, resulting in a 3-fold higher production of carpospores than tetraspores. Results showed that vegetative and spore recruitment may explain the low gametophyte,tetrasporophyte ratio of the studied population of G. sesquipedale as opposed to the physiological performance of phases. [source] NOT EXPLANATION BUT SALVATION: SCIENTIFIC THEOLOGY, CHRISTOLOGY, AND SUFFERINGMODERN THEOLOGY, Issue 1 2006ANDREW MOORE The view that Christian belief is explanatory is widespread in contemporary theology, apologetics, and philosophy of religion and it has received particular impetus from attempts to correlate science and Christianity. This article proposes an account of explanatory thinking in theology based on the principle that theological explanations should be disciplined by the internal logic of Scripture. Arthur Peacocke's biologically construed Christology and Alister McGrath's argument that suffering is an anomaly in the Christian explanatory scheme are shown to yield theological results which are inconsistent with this principle. This article's theological argument complements philosophical criticisms of the view that religious belief is explanatory. [source] BEST EXPLANATION AND SCIENTIFIC REALISMPHILOSOPHICAL FORUM, Issue 2 2007YVONNE RALEY First page of article [source] THE NARROWING GENDER GAP IN ARRESTS: ASSESSING COMPETING EXPLANATIONS USING SELF-REPORT, TRAFFIC FATALITY, AND OFFICIAL DATA ON DRUNK DRIVING, 1980,2004,CRIMINOLOGY, Issue 3 2008JENNIFER SCHWARTZ We evaluate two alternative explanations for the converging gender gap in arrest,changes in women's behavior versus changes in mechanisms of social control. Using the offense of drunk driving and three methodologically diverse data sets, we explore trends in the DUI gender gap. We probe for change across various age groups and across measures tapping DUI prevalence and chronicity. Augmented Dickey-Fuller time-series techniques are used to assess changes in the gender gap and levels of drunk driving from 1980 to 2004. Analyses show women of all ages making arrest gains on men,a converging gender gap. In contrast, self-report and traffic data indicate little or no systematic change in the DUI gender gap. Findings support the conclusion that mechanisms of social control have shifted to target female offending patterns disproportionately. Little support exists for the contention that increased strain and liberalized gender roles have altered the gender gap or female drunk-driving patterns. [source] EVOLUTIONARY MECHANISMS UNDERLYING THE EFFECT OF SUBJECTIVE SOCIAL STATUS ON SMOKING ABSTINENCE: ULTIMATE VERSUS PROXIMATE EXPLANATIONSADDICTION, Issue 8 2010HENRI-JEAN AUBIN No abstract is available for this article. [source] EVALUATION OF ELEVATED PLOIDY AND ASEXUAL REPRODUCTION AS ALTERNATIVE EXPLANATIONS FOR GEOGRAPHIC PARTHENOGENESIS IN EUCYPRIS VIRENS OSTRACODSEVOLUTION, Issue 4 2010Sofia Adolfsson Transitions from sexual to asexual reproduction are often coupled with elevations in ploidy. As a consequence, the importance of ploidy per se for the maintenance and spread of asexual populations is unclear. To examine the effects of ploidy and asexual reproduction as independent determinants of the success of asexual lineages, we sampled diploid sexual, diploid asexual, and triploid asexual Eucypris virens ostracods across a European wide range. Applying nuclear and mitochondrial markers, we found that E. virens consists of genetically highly differentiated diploid sexual populations, to the extent that these sexual clades could be considered as cryptic species. All sexual populations were found in southern Europe and North Africa and we found that both diploid asexual and triploid asexual lineages have originated multiple times from several sexual lineages. Therefore, the asexual lineages show a wide variety of genetic backgrounds and very strong population genetic structure across the wide geographic range. Finally, we found that triploid, but not diploid, asexual clones dominate habitats in northern Europe. The limited distribution of diploid asexual lineages, despite their shared ancestry with triploid asexual lineages, strongly suggests that the wider geographic distribution of triploids is due to elevated ploidy rather than to asexuality. [source] ASSESSING CURRENT ADAPTATION AND PHYLOGENETIC INERTIA AS EXPLANATIONS OF TRAIT EVOLUTION:THE NEED FOR CONTROLLED COMPARISONSEVOLUTION, Issue 10 2005Thomas F. Hansen Abstract The determination of whether the pattern of trait evolution observed in a comparative analysis of species data is due to adaptation to current environments, to phylogenetic inertia, or to both of these forces requires that one control for the effects of either force when making an assessment of the evolutionary role of the other. Orzack and Sober (2001) developed the method of controlled comparisons to make such assessments; their implementation of the method focussed on a discretely varying trait. Here, we show that the method of controlled comparisons can be viewed as a meta-method, which can be implemented in many ways. We discuss which recent methods for the comparative analysis of continuously distributed traits can generate controlled comparisons and can thereby be used to properly assess whether current adaptation and/or phylogenetic inertia have influenced a trait's evolution. The implementation of controlled comparisons is illustrated by an analysis of sex-ratio data for fig wasps. This analysis suggests that current adaptation and phylogenetic inertia influence this trait. [source] HERMENEUTICS OF MULTIPLE SENSES: WANG JIE'S "EXPLANATIONS AND COMMENTARY WITH DIAGRAMS TO THE QINGJING JING"JOURNAL OF CHINESE PHILOSOPHY, Issue 3 2010JOACHIM GENTZ First page of article [source] Nonindigenous Species: Ecological Explanation, Environmental Ethics, and Public PolicyCONSERVATION BIOLOGY, Issue 1 2003David M. Lodge Misunderstandings and tension exist regarding the science, values, environmental ethics, and public policy relevant to invasive species, which are the subset of nonindigenous species that cause economic or environmental damage. Although there is a natural background rate at which species invasions occur, it is much lower than the current human-induced rates at which species are being moved around the globe. Contrary to some recently voiced opinions , the fact that some species invasions occur without human assistance does not confer acceptability on all species invasions. Also, despite claims to the contrary, the reductions of native biodiversity caused by nonindigenous species are large and well documented. Even if that were not true, an emphasis on species numbers alone as a metric for the impact of nonindigenous species does not adequately incorporate the high value many humans place on the uniqueness of regional biota. Because regional biota are being homogenized by species invasions, it has become an appropriate and official public policy goal in the United States to reduce the harm done by invasive species. The goal is not, however, a reduction of numbers of nonindigenous species per se, as recently claimed by some authors, but a reduction in the damage caused by invasive species, including many sorts of environmental and economic damage. A major challenge remaining for ecology, environmental ethics, and public policy is therefore the development of widely applicable risk-assessment protocols that are acceptable to diverse constituencies. Despite apparent disagreements among scholars, little real disagreement exists about the occurrence, effects, or public-policy implications of nonindigenous species. Resumen: El público está recibiendo un mensaje confuso de ecologistas, otros académicos y periodistas sobre el tema de especies no nativas. Existen malos entendidos y tensión en relación con la ciencia, los valores, la ética ambiental y las políticas públicas relevantes a las especies invasoras, que son un subconjunto de las especies no nativas que causan daños económicos o ambientales. Aunque existe una tasa natural a la que ocurren invasiones, es mucho más baja que las actuales tasas, inducidas por humanos, a las que especies son movidas alrededor del mundo. Al contrario de algunos autores recientes, el hecho de que algunas invasiones de especies ocurren sin asistencia humana no le confiere aceptabilidad moral sobre todas las invasiones de especies. También, a pesar de recientes afirmaciones de lo contrario, las reducciones de biodiversidad nativa debido a especies no nativas son notables y están bien documentadas. Aún si no fuera verdad, el énfasis sólo en el número de especies como una medida del impacto de especies no nativas no incorpora adecuadamente el alto valor que muchos humanos reconocen en la singularidad de la biota regional. Debido a que la biota regional está siendo homogeneizada por invasiones de especies, la reducción del daño causado por especies invasoras se ha convertido en una política pública apropiada y oficial en los Estados Unidos. Sin embargo, la meta no es la reducción de especies no nativas, en si, como afirman algunos autores recientes, sino una reducción de los impactos dañinos de las especies invasoras, incluyendo muchos tipos de daño económico y ambiental. Por lo tanto, un reto mayor para la ecología, la ética ambiental y la política pública es el desarrollo de protocolos de evaluación de riesgos ampliamente aplicables que sean aceptables para electores diversos. A pesar de aparentes desacuerdos entre académicos, existe poco desacuerdo real acerca de la ocurrencia, el impacto o las implicancias en política pública de las especies no nativas. [source] Tests of a Deferred Tax Explanation of the Negative Association between the LIFO Reserve and Firm Value,CONTEMPORARY ACCOUNTING RESEARCH, Issue 1 2000DAN S. DHALIWAL Guenther and Trombley (1994) and Jennings, Simko, and Thompson (1996) document a negative association between a firm's last-in, first-out (LIFO) reserve and the market value of its equity. In this paper, we test a deferred tax explanation of this negative association. Specifically, we argue that investors, conditional on adjusting inventory to as-if first-in, first-out (FIFO), estimate a firm's future LIFO liquidation tax burden as its LIFO reserve multiplied by the appropriate corporate tax rate and include this tax-adjusted LIFO reserve in the valuation of a LIFO firm's net assets. On the basis of this argument, the tax-adjusted LIFO reserve is in effect an estimate of an off-balance-sheet deferred tax liability and, as a result, we predict a negative association between the tax-adjusted LIFO reserve and market value of equity. We test our deferred tax explanation by estimating a valuation model in which a firm's market value of equity is expressed as a function of the firm's assets, liabilities, deferred tax liability, and tax-adjusted LIFO reserve; the model is estimated separately in years preceding and following the reduction of tax rates mandated by the US Tax Reform Act of 1986. Test results provide strong support for the deferred tax explanation of the negative association between a firm's LIFO reserve and the market value of its equity. [source] Investor Reaction to Inter-corporate Business Contracting: Evidence and ExplanationECONOMIC NOTES, Issue 3 2006Fayez A. Elayan We examine the stock market reaction to 1227 inter-corporate ordinary business contract announcements reported by Dow Jones between January 1, 1990 and December 31, 2001. Around contract announcement dates, we find statistically significant positive average abnormal returns and abnormal trading volume for contractors, but insignificant positive abnormal returns and negative abnormal volume for contractees. Cross-sectionally, contract announcement period returns are higher for contractors who are small relative to the contract size, have higher return volatility, larger market-to-book ratios and higher profitability. The announcement period returns of contract-awarding firms are not significant and are only marginally related to cross-sectional explanatory factors. The results are consistent with two explanatory stories: contractor quasi-rents induced by the winner's curse and information signalling about contractor production costs. The results are not consistent with perfect competition, with contracts having positive net present values for both parties, and with a version of incomplete contracting theory. [source] A More General Non-expected Utility Model as an Explanation of Gambling Outcomes for Individuals and MarketsECONOMICA, Issue 302 2009DAVID PEEL One feature of experimental work is the heterogeneity in risk attitudes and probability distortion displayed by agents. We outline a more general non-expected utility model, which nests the models of Markowitz, and Kahneman and Tversky. The model can generate the standard favourite,longshot bias or a reverse favourite,longshot bias as a result of optimal behaviour. We also provide new empirical evidence on the relationship between Tote and bookmaker returns and confirm that the relationship is not as originally conjectured by Gabriel and Marsden. We outline how our new model can provide an explanation of the relationship that is observed. [source] Waorani Grief and the Witch-Killer's Rage: Worldview, Emotion, and Anthropological ExplanationETHOS, Issue 2 2005CLAYTON ROBARCHEK This article analyzes a complex of grief, rage and homicide among the Ecuadorian Waorani, tracing the relationships among worldview, values and concepts of self, and envy, rage and homicide, especially witch-killing. We contrast the results with the position taken by Rosaldo in his widely cited paper "Grief and the Headhunters Rage" (1989). We hold that Waorani individuals' experience of rage during bereavement is not, as argued by Rosaldo for the Ilongot, a thing sui generis, immune to further explanation. Rather, it is explained as a product of people defining their experience on the basis of cultural constructions of self and reality and acting in accord with those definitions. We also argue that this explanation, coupled with the similarities in the Waorani and Ilongot complexes, suggests the operation of similar sociocultural and psychological processes in the two societies and supports, contra the assertions of postmodernists and others, the continued value and validity of cross-cultural comparative research. [source] Is Empathy Gendered and, If So, Why?ETHOS, Issue 4 2004An Approach from Feminist Psychological Anthropology Difference feminists have argued that women have special virtues. One such virtue would seem to be empathy, which has three main components: imaginative projection, awareness of the other's emotions, and concern. Empathy is closely related to identification. Psychological research and the author's own study of women's and men's talk about poverty and welfare use in the United States demonstrate women's greater empathic concern. However, some cross-cultural research shows greater sex differences in empathy in the United States than elsewhere. This combination of findings (women tend to demonstrate greater empathic concern, but this typical difference varies cross-culturally) requires a complex biocultural explanation, drawing on cognitive, psychoanalytic, and feminist theories. Explanation, and not just description, is a prerequisite for change. [source] Normative Phenomenalism: On Robert Brandom's Practice-Based Explanation of MeaningEUROPEAN JOURNAL OF PHILOSOPHY, Issue 1 2005Ronald Loeffler First page of article [source] Explanation And Thought Experiments In HistoryHISTORY AND THEORY, Issue 1 2003Tim De Mey Although interest in them is clearly growing, most professional historians do not accept thought experiments as appropriate tools. Advocates of the deliberate use of thought experiments in history argue that without counterfactuals, causal attributions in history do not make sense. Whereas such arguments play upon the meaning of causation in history, this article focuses on the reasoning processes by which historians arrive at causal explanations. First, we discuss the roles thought experiments play in arriving at explanations of both facts and contrasts. Then, we pinpoint the functions thought experiments fulfill in arriving at weighted explanations of contrasts. [source] The Psychological Basis of Historical Explanation: Reenactment, Simulation, and the Fusion of HorizonsHISTORY AND THEORY, Issue 1 2002Karsten R. Stueber In this article I will challenge a received orthodoxy in the philosophy of social science by showing that Collingwood was right in insisting that reenactment is epistemically central for historical explanations of individual agency. Situating Collingwood within the context of the debate between simulation theory and what has come to be called "theory theory" in contemporary philosophy of mind and psychology, I will develop two systematic arguments that attempt to show the essential importance of reenactment for our understanding of rational agency. I will furthermore show that Gadamer's influential critique of the reenactment model distinguishes insufficiently between the interpretation of certain types of texts and the explanation of individual actions. In providing an account of individual agency, we are committed to a realistic understanding of our ordinary scheme of action-explanations and have thus to recognize the centrality of reenactment. Nevertheless, Collingwood's emphasis on reenactment is certainly one-sided. I will demonstrate its limitations even for accounting for individual agency, and show how it has to be supplemented by various theoretical considerations, by analyzing the different explanatory strategies that Christopher Browning and Daniel Goldhagen use to explain the behavior of the ordinary men in Reserve Battalion 101 during World War II. [source] Reconstructing Culture in Historical Explanation: Narratives as Cultural Structure and PracticeHISTORY AND THEORY, Issue 3 2000Anne Kane The problem of how to access and deploy the explanatory power of culture in historical accounts has long remained vexing. A recent approach, combining and transcending the "culture as structure"/"culture as practice" divide among social historians, puts explanatory focus on the recursivity of meaning, agency, and structure in historical transformation. This article argues that meaning construction is at the nexus of culture, social structure, and social action, and must be the explicit target of investigation into the cultural dimension of historical explanation. Through an empirical analysis of political alliance during the Irish Land War, 1879,1882, I demonstrate that historians can uncover meaning construction by analyzing the symbolic structures and practices of narrative discourse. [source] Cultural Meanings and Cultural Structures in Historical ExplanationHISTORY AND THEORY, Issue 3 2000John R. Hall One way to recast the problem of cultural explanation in historical inquiry is to distinguish two conceptualizations involving culture: (1) cultural meanings as contents of signification (however theorized) that inform meaningful courses of action in historically unfolding circumstances; and (2) cultural structures as institutionalized patterns of social life that may be elaborated in more than one concrete construction of meaning. This distinction helps to suggest how explanation can operate in accounting for cultural processes of meaning-formation, as well as in other ways that transcend specific meanings, yet are nonetheless cultural. Examples of historical explanation involving each construct are offered, and their potential examined. [source] Some Afterthoughts on Culture and Explanation in Historical InquiryHISTORY AND THEORY, Issue 3 2000Chris Lorenz I argue here that the articles in this forum contain basic agreements. All three reject naturalism, reductionism, and monism while retaining causality as an explanatory category, and all three emphasize the role of time and argue for a view in which culture is regarded as both structured and contingent. The differences among the explanatory proposals of Hall, Biernacki, and Kane are as important as the similarities: while Hall favors a Weberian approach, Biernacki argues for a primarily pragmatic explanation of culture, and Kane for a primarily semiotic explanation. I argue that all three positions face immanent problems in elucidating the exact nature of cultural explanation. While Hall leaves the problem of "extrinsic" ideal-typical explanation unsolved, Biernacki simply presupposes the superiority of pragmatic over other types of cultural explanation, and Kane does the same for semiotic explanation. Hints at cultural explanation in the form of narrative remain underargued and are built on old ideas of an opposition between "analysis" and "narrative." This is also the case with the latest plea for "analytic narratves." I conclude that a renewed reflection on this opposition is called for in order to come to grips with cultural explanation and to get beyond the old stereotypes regarding the relationship between historical and social-scientific approaches to the past. [source] Bias in Historical Description, Interpretation, and ExplanationHISTORY AND THEORY, Issue 1 2000C. Behan Mccullagh Debates among historiansshow that they expect descriptions of past people and events, interpretations of historicalsubjects, and genetic explanations of historical changes to be fair and not misleading. Sometimesunfair accounts of the past are the result of historians' bias, of their preferring one accountover others because it accords with their interests. It is useful to distinguish history that ismisleading by accident from that which is the result of personal bias; and to distinguish personalbias from cultural bias and general cultural relativity. This article explains what fairdescriptions, interpretations, and explanations are like in order to clarify the senses in which theycan be biased. It then explains why bias is deplorable, and after noting those who regard it asmore or less inevitable, considers how personal bias can be avoided. It argues that it is notdetachment that is needed, but commitment to standards of rational inquiry. Some mightthink that rational standards of inquiry will not be enough to avoid bias if the evidence availableto the historian is itself biased. In fact historians often allow for bias in evidence, and evenexplain it when reconstructing what happened in the past. The article concludes bynoting that although personal bias can be largely avoided, cultural bias is not so easy to detect orcorrect. [source] Explanation in Information SystemsINFORMATION SYSTEMS JOURNAL, Issue 1 2008Dirk S Hovorka Abstract., Explanation of observed phenomena is a major objective of both those who conduct and those who apply research in information systems (IS). Whereas explanation based on the statistical relationship between independent and dependent variables is a common outcome of explanatory IS research, philosophers of science disagree about whether statistical relationships are the sole basis for the explanation of phenomena. The purpose of this paper is to introduce an expanded concept of explanation into the realm of IS research. We present a framework based on the four principle explanation types defined in modern philosophy: covering-law explanation, statistical-relevance explanation, contrast-class explanation and functional explanation. A well-established research stream, media richness, is used to illustrate how the different explanation types complement each other in increasing comprehension of the phenomenon. This framework underlies our argument that explanatory pluralism can be used to broaden research perspectives and increase scientific comprehension of IS phenomena above and beyond the methodological and ontological pluralism currently in use in IS research. [source] Modelling climate change in West African Sahel rainfall (1931,90) as an artifact of changing station locationsINTERNATIONAL JOURNAL OF CLIMATOLOGY, Issue 5 2004Adrian Chappell Abstract Since the major droughts in the West African Sahel during the 1970s, it has been widely asserted that mean annual summer rainfall has declined since the late 1960s. Explanation of this persistent regional drying trend was important for famine early-warning and global climate models. However, the network of rainfall stations changed considerably during that recent period of desiccation. Furthermore, it was difficult to reconcile the calculation of a simple mean value for a region known to have a complex spatial and temporal rainfall pattern. A simple model separated the Sahel into ,wet' and ,dry' regions. This model was inverted against mean annual summer rainfall for the Sahel between 1931 and 1990. Model predictions were found to be insensitive to initial starting conditions. The optimized parameters explained 87% of the variation in observed mean annual summer rainfall. The model predicted the mean annual rainfall in the wet ,coastal' and dry ,continental' regions of the Sahel to be 973 mm and 142 mm respectively. Consequently, the predicted long-term mean annual summer rainfall was 558 mm, 15% greater than that of the observed long-term mean (417 mm). The mean annual summer rainfall for the region was corrected by removing the influence of changing station locations over the study period. No persistent decline was found in mean annual summer rainfall, which suggested that the perceived drying trend was an artifact of the crude statistical aggregation of the data and historical changes in the climate station networks. The absence of a decline in rainfall questioned the validity of the hypotheses and speculations for the causes of the drying trend in the region and its effects on global climate change. It also increased the likelihood that changes over time in other regional and global climate station networks have influenced the performance and interpretation of global climate models. Copyright © 2004 Royal Meteorological Society [source] Realism, Regularity and Social ExplanationJOURNAL FOR THE THEORY OF SOCIAL BEHAVIOUR, Issue 2 2003Stephen Kemp Stephen Kemp and John Holmwood, Realism, Regularity and Social Explanation, pp. 165,187. This article explores the difficulties raised for social scientific investigation by the absence of experiment, critically reviewing realist responses to the problem such as those offered by Bhaskar, Collier and Sayer. It suggests that realist arguments for a shift from prediction to explanation, the use of abstraction, and reliance upon interpretive forms of investigation fail to demonstrate that these approaches compensate for the lack of experimental control. Instead, it is argued that the search for regularities, when suitably conceived, provides the best alternative to experiment for the social sciences. [source] | ||||||||||||||||||||||||||||||||||||||||||||||