Leo Groarke

This paper responds to two aspects of Ralph Johnson's Manifest Rationality (2000). The first is his critique of deductivism. The second is his failure to make room for some species of argument (e.g., visual and kisceral arguments) proposed by recent commentators. In the first case, Johnson holds that argumentation theorists have adopted a notion of argument which is too narrow. In the second, that they have adopted one which is too broad. I discuss the case Johnson makes for both claims, and possible objections to his analysis

In the last quarter-century, the emergence of argumentation theory has spurred the development of an extensive literature on the study of argument. It encompasses empirical and theoretical investigations that often have their roots in the different traditions that have studied argument since ancient times – most notably, logic, rhetoric, and dialectics. Against this background, I advocate a “thick” theory of argument that merges traditional theories, weaving together their sometimes discordant approaches to provide an overarching framework for the assessment of arguments in a broad range of contexts. In sketching such a theory, I propose six steps that can “thicken” traditional approaches to argument in the interests of a comprehensive theory.

Offering an innovative approach to critical thinking, Good Reasoning Matters! identifies the essential structure of good arguments in a variety of contexts and also provides guidelines to help students construct their own effective arguments. In addition to examining the most common features of faulty reasoning--slanting, bias, propaganda, vagueness, ambiguity, and a common failure to consider opposing points of view--the book introduces a variety of argument schemes and rhetorical techniques. This edition adds material on visual arguments and more exercises.

The prodigious development of argumentation theory over the last three decades has raised many issues that challenge some of the long held assumptions that characterize the traditional study of argument. One of these issues is the role of emotion in argument and argument analysis. While rhetoric has, with its emphasis on persuasion, always recognized that emotions play some role determining which arguments we accept and reject, a long tradition sees appeals to emotion as fallacies that violate the standards of rationality and objectivity reason and argument require.