This paper evaluates four competing psychological explanations for why the jury in the O.J. Simpson murder trial reached the verdict they did: explanatory coherence, Bayesian probability theory, wishful thinking, and emotional coherence. It describes computational models that provide detailed simulations of juror reasoning for explanatory coherence, Bayesian networks, and emotional coherence, and argues that the latter account provides the most plausible explanation of the jury's decision.

A philosopher once asked me: “Paul, how do you collaborate?” He was puzzled about how I came to have more than two dozen co-authors over the past 20 years. His puzzlement was natural for a philosopher, because co-authored articles and books are still rare in philosophy and the humanities, in contrast to science where most current research is collaborative. Unlike most philosophers, scientists know how to collaborate; this paper is about the nature of such procedural knowledge. I begin by discussing (...) three related distinctions found in philosophy and cognitive science: knowledge how vs. knowledge that, procedural vs. declarative knowledge, and explicit vs. implicit knowledge. I then document the prevalence of collaboration in the sciences and its scarcity in philosophy. In order to characterize the sorts of procedural knowledge that make collaborative research possible and fruitful, I discuss how scientists collaborate, how they learn to collaborate, and why they collaborate. Contrary to some recent suggestions by philosophers, I will argue that knowledge how often does not always reduce to knowledge that, and that collaboration has many purposes besides the pursuit of power and resources. The relative scarcity of philosophical collaborations might be explained by the nature of philosophy, if the field is viewed as inherently personal or a priori. But I argue against this view in favor of a more naturalistic one, December 2, 2005 with the implication that the main reason why philosophers do not collaborate more is that they do not know how. My account of collaboration is based on my own experience, published advice by practicing scientists, and interviews with a group of highly successful scientific collaborators who are members of the Social Psychology area of the University of Waterloo Psychology Department. For the past two decades, Waterloo’s social psychology program has flourished, both in collaborative publication and in graduate training: their former Ph.D.. (shrink)

This article provides a historical, philosophical, and psychological analysis of the recent discovery that reoviruses are oncolytic, capable of infecting and destroying many kinds of cancer cells. After describing Patrick Lee's very indirect path to this discovery, I discuss the implications of this case for understanding the nature of scientific discovery, including the economy of research, anomaly recognition, hypothesis formation, and the role of emotion in scientific thinking. Lee's discoveries involved a combination of serendipity, abductive and deductive inference, and emotional (...) cognition. (shrink)

Phenomenology as rhetoric The literature on ‘nursing phenomenology’ is driven by a range of ontological and epistemological considerations, intended to distance it from conventionally scientific approaches. However, this paper examines a series of discrepancies between phenomenological rhetoric and phenomenological practice. The rhetoric celebrates perceptions and experience; but the concluding moment of a research report almost always makes implicit claims about reality. The rhetoric insists on uniquely personal meanings; but the practice offers blank, anonymous abstractions. The rhetoric invites us to believe (...) that knowing is subjective and involved, but at the same time it recommends a technique (bracketing) which can only represent a crude, and entirely misconceived, gesture towards objectivity. Finally, the rhetoric claims that generalisation is beside the point; but the majority of researchers generalise anyway. In quietly ignoring their own rhetoric, ‘phenomenologists’ appropriate scientific prerogatives illegitimately. For their methods do not entitle them to lay claim to anything resembling ‘objectivity’, or generalisability, or ‘reality’, or theoretical abstraction. Like other researchers, they want to talk in generalisable terms about reality; they want to be objective, they want to do theory. But they are saddled with a philosophy that is disabling, because it says they can only talk about perceptions, and meanings, and uniqueness. (shrink)

This introduction to the special issue on "Aesthetics of Science" reviews recent philosophical research on aesthetic aspects of science. Topics represented in this research include the aesthetic properties of scientific images, theories, and experiments; the relation of science and art; the role of aesthetic criteria in scientific practice and their effect on the development of science; aesthetic aspects of mathematics; the contrast between a classic and a Romantic aesthetic; and the relation between emotion, cognition, and rationality.

Inconsistencies in science take several forms. Some occur at the level of substantive claims about the world. Others occur at the level of methodology, and take the form of dilemmas, or cases of conflicting epistemic or cognitive values. In this article, I discuss how methodological dilemmas arise. I then consider how scientists resolve them. There are strong grounds for thinking that emotional judgement plays an important role in resolving methodological dilemmas. Lastly, I discuss whether and under what conditions this reliance (...) on emotional judgement is rationally warranted. I consider two possible mechanisms, based on coherence and induction, able to ensure that scientists’ emotional responses to methodological dilemmas are rationally warranted. (shrink)

Ethics studies the evaluation of actions, agents and their mental states and characters from a distinctive viewpoint or employing a distinctive vocabulary. And epistemology examines the evaluation of actions (inquiries and assertions), agents (believers and inquirers), and their states (belief and attitudes) from a different viewpoint. Given this common concern with evaluation, we should surely expect there to be considerable similarities between the issues examined and the ideas employed in the two areas. However, when we examine most textbooks in ethics (...) and epistemology, this expectation is not fulfilled. Of course, the vocabularies of evaluation are different: in ethics, we are concerned with issues of right and wrong, virtue and vice, moral obligation, and so on; and in epistemology, it is most commonly assumed that we are interested in whether states count as knowledge or as justified beliefs, with whether beliefs and strategies of belief formation are rational. (shrink)