This autobiographical piece is in response to Frank Fair’s kind invitation to write a reflective piece on my involvement over the last 30 years in the critical thinking movement, with special attention given to 18 years of assessment data as I assessed students’ critical thinking outcomes at Baker University. The first section of the paper deals with my intellectual history and how I came to a specific understanding of CT. The second deals with the Baker Experiment in combining instruction in (...) CT with written composition, with a special focus on Deductive Reconstruction. The third section goes over our attempts at assessment and what we discovered by using three separate tests. The final section of the paper presents my conclusions about the challenges of teaching CT based on the Baker Experiment. (shrink)

Critical thinking is considered an essential educational goal. As a result, many philosophers dreamed their departments would offer multiple sections of CT, hence justifying hiring additional staff. Unfortunately, this dream did not materialize. So, similar to a current theory about teaching writing, “critical thinking across the curriculum” has become a popular idea. While the idea has appeal and unquestionable merit, I will argue that the likelihood the skills necessary for effective CT will actually be taught is minimal.

After critiquing the arguments against using formal logic to teach critical thinking, this paper argues that for theoretical, practical, and empirical reasons, instruction in the fundamentals of formal logic is essential for critical thinking, and so should be included in every class that purports to teach critical thinking.

In this paper, after showing how the postmodern critiques of Enlightenment rationality apply to critical thinking, I argue that a critical discussion on any subject must assume specific principles of rationality. I then show how these principles can be used to critique and reject postmodern claims about the contextual nature of rationality.

This paper provides evidence and arguments that, given the choice of teaching critical thinking and written composition as separate, stand-alone courses or combining them, the two should be combined into an integrated sequence.

In "The Problem with Percy: Epistemology, Understanding and Critical Thinking," Sharon Bailin argues that critical thinking skills do not generalize because students do not understand the larger epistemological picture in which to situate the importance of arguments and reasons. More plausible explanations are: (I) instructors across the disciplines do not give assignments requiring critical thinking (CT) skills, (2) single courses in CT have little effect, (3) pragmatic arguments showing the effectiveness of CT are more effective than epistemological arguments with the (...) average student. So to achieve the generalization of the logical skills and intellectual dispositions inherent in CT courses, CT thinking cannot be departmentalized. (shrink)

While all who are interested in the philosophical issues surrounding feminism should read Simone de Beauvoir's seminal work The Second Sex, many who begin the long journey do not understand the philo- sophical traditions from which her analyses and arguments grow. This makes understanding and appreciating the cogency of her position very difficult. Understanding The Second Sex introduces the naive reader to the necessary philosophical tradition, explicates major portions of the text, and analyzes Simone de Beauvoir's criticisms of marriage and (...) romantic love. (shrink)

There is more than one way to say that composition is identity. Yi has distinguished the Weak Composition thesis from the Strong Composition thesis and attributed the former to David Lewis while noting that Lewis associates something like the latter with me. Weak Composition is the thesis that the relation between the parts collectively and their whole is closely analogous to identity. Strong Composition is the thesis that the relation between the parts collectively and their whole is identity. Yi is (...) right that Strong Composition does not fully reflect my view. We must recognize further what, borrowing Lewis's characterization, could be called the "stronger, and stranger" Composition thesis, or what I'll call the Stronger Composition thesis for short. On Strong Composition, it is only collectively that the parts are identical with the whole. On Stronger Composition, they are individually identical with it as well. I will explain and motivate this thesis. (shrink)

How is it possible for David Hume to be both withering skeptic and constructive theorist? I recommend an answer like the Pyrrhonian answer to the question how it is possible to suspend all judgment yet engage in active daily life. Sextus Empiricus distinguishes two kinds of assent: one suspended across the board and one involved with daily living. The first is an act of will based on appreciation of reasons; the second is a causal effect of appearances. Hume makes the (...) same distinction, only he extends the sort of assent involved in daily life to theoretical matters as well. He is a skeptic both in finding no reason to grant the first sort of assent and in being subject to the second. (shrink)

Hume discusses the distinction of reason to explain how we distinguish things inseparable, and so identical, e.g., the color and figure of a white globe. He says we note the respect in which the globe is similar to a white cube and dissimilar to a black sphere, and the respect in which it is dissimilar to the first and similar to the second. Unfortunately, Hume takes these differing respects of resemblance to be identical with the white globe itself. Contradiction results, (...) undermining his theory of abstraction. The way out is apparently to admit an intrinsic complexity in even simple things. (shrink)

In this volume--the first, focused study of Hume on time and identity--Baxter focuses on Hume’s treatment of the concept of numerical identity, which is central to Hume's famous discussions of the external world and personal identity. Hume raises a long unappreciated, and still unresolved, difficulty with the concept of identity: how to represent something as "a medium betwixt unity and number." Superficial resemblance to Frege’s famous puzzle has kept the difficulty in the shadows. Hume’s way of addressing it makes sense (...) only in the context of his unorthodox theory of time. Baxter shows the defensibility of that theory against past dismissive interpretations, especially of Hume’s stance on infinite divisibility. Later the author shows how the difficulty underlies Hume’s later worries about his theory of personal identity, in a new reading motivated by Hume’s important appeals to consciousness. Baxter casts Hume throughout as an acute metaphysician, and reconciles this side of Hume with his overarching Pyrrhonian skepticism. (shrink)

I argue that an individual has aspects numerically identical with it and each other that nonetheless qualitatively differ from it and each other. This discernibility of identicals does not violate Leibniz's Law, however, which concerns only individuals and is silent about their aspects. They are not in its domain of quantification. To argue that there are aspects I will appeal to the internal conflicts of conscious beings. I do not mean to imply that aspects are confined to such cases, but (...) the best way to start is to recognize them experientially. We can feel the conflicts within ourselves. In doing so we can feel some of our aspects. I will try to enhance our understanding of the concept of aspect by listing and formalizing some principles for its use. After that I will argue that all sorts of individual things have aspects, not just people who are conflicted. (shrink)

Hume's Treatise arguments concerning space, time, and geometry, especially ones involving his denial of infinite divisibility; have suffered harsh criticism. I show that in the section "Of the ideas of space and time," Hume gives important characterizations of his skeptical approach, in some respects Pyrrhonian, that will be developed in the rest of the Treatise. When that approach is better understood, the force of Hume's arguments can be appreciated, and the influential criticisms of them can be seen to miss the (...) mark. (shrink)

Berkeley and Hume object to Locke's account of abstraction. Abstraction is separating in the mind what cannot be separated in reality. Their objection is that if a is inseparable in reality from b, then the idea of a is inseparable from the idea of b. The former inseparability is the reason for the latter. In most interpretations, however, commentators leave the former unexplained in explaining the latter. This article assumes that Berkeley and Hume present a unified front against Locke. Hume (...) supplements Berkeley's argument just where there are gaps. In particular, Hume makes explicit something Berkeley leaves implicit: The argument against Locke depends on the principle that things are inseparable if and only if they are identical. Abstraction is thinking of one of an inseparable pair while not thinking of the other. But doing so entails thinking of something while not thinking of it. This is the fundamental objection. (shrink)

Understanding Hume’s theory of space and time requires suspending our own. When theorizing, we think of space as one huge array of locations, which external objects might or might not occupy. Time adds another dimension to this vast array. For Hume, in contrast, space is extension in general, where being extended is having parts arranged one right next to the other like the pearls on a necklace. Time is duration in general, where having duration is having parts occurring one aft (...) er another like the notes of a song. Hume’s diff erent view stems from his empiricism, his reliance on experience and observation as the foundation of our concepts. Nothing in our experience suggests a single vast array of locations. Rather, we simply notice that bodies are similar insofar as they have lengths that can be compared. Likewise, nothing in our experience suggests a single dimension of time. Rather, we simply notice that diff erent successions are similar insofar as they have durations that can be compared. Th eorizing that these observations show there to be a single multidimensional array goes well beyond the evidence for Hume. As a skeptic, he fi nds himself unable to assent to theories that stray too far beyond the deliverances of the senses. For Hume, the ideas of space and time are each a general idea of simple—partless— objects arrayed in a certain manner. He argues that the structures of the ideas of space and time refl ect the structures of space and time. Th erefore, space and time are not infi - nitely divisible, and they are ways simple objects are arrayed. Consequently, there is no such thing as empty space nor time without change. (shrink)

Armstrong has loose identity be an equivalence relation, yet in cases of something becoming something else, loose identity is not transitive. My alternate account has an attribution of loose identity be really two: a true attribution of an underlying relation (perhaps not transitive) and a false attribution--a Humean feigning-of strict identity. The feigning may become less appropriate as the underlying relation grows more distant. What makes it appropriate initially is that the underlying relation supports a predictable change in some collective. (...) The importance of the predictably changing collective is signaled by regarding it as a single thing. (shrink)

Since the 80s, educators have supported instruction in critical thinking as “an Educational Ideal.” This should not be a surprise given some of the more common conceptions, e.g., Ennis’s “reasonable reflective thinking on what to believe or do,” or Siegel’s “being appropriately moved by reasons,” as opposed to bias, emotion or wishful thinking. Who would want a doctor, lawyer, or mechanic who could not skillfully evaluate arguments, causes, and cures? So, educators endorsed the dream that, through proper CT instruction, students’ (...) critical skills and “rational passions” could be greatly improved. In spite of the dream’s appeal, the reality is, after 30+ years, there is little reason to think the dream resembles reality. After describing what I take to be an adequate definition of CT, such a depressing conclusion will be supported by CT assessment scores from across academe, the continued widespread disagreement among experts in nearly all fields, including CT, and the abundant psychological research on rationality and decision making. And finally, while the ideal extols the value of objectivity, I shall argue that bias may be unavoidable because personal values play a vital role in the evaluation of many arguments. (shrink)

Hume’s critique of traditional abstraction entails a result that undercuts his account of the idea of identity. To save his account of identity, Hume would have to accept abstraction as well. What links these two discussions is (1) Hume’s widely shared assumption that traditional abstraction is separating in the mind what are inseparable in reality, (2) his principle that what are different are mentally separable, and (3) his principle that we cannot conceive of the impossible. Given these, it will turn (...) out that abstraction is mentally separating something from itself, which will entail that abstraction is conceiving of something as distinct from itself. But it is impossible for something to be distinct from itself, and so it is inconceivable. Therefore abstraction is impossible. Yet consider Hume’s account of the idea of identity. On that account, to conceive of an identity is to conceive of something as one single thing viewed one way and as two distinct things viewed another. How we can take these opposing views of the same thing is a problem that I’ve termed Hume’s Difficulty concerning Identity. It will turn out that we can take the opposing views only if we can conceive of the single thing viewed one way as somehow distinct from itself when viewed the other way. That is, we must be able to conceive of something as distinct from itself. However, if we cannot conceive of something as distinct from itself when abstracting, then we cannot do it when conceiving of an identity. So traditional abstraction and Hume’s account of the idea of identity stand or fall together. (shrink)

This essay interprets Butler’s distinction between identity in the loose and popular sense and in the strict and philosophical sense. Suppose there are different standards for counting the same things. Then what are two distinct things counting strictly may be one and the same thing counting loosely. Within a given standard identity is one-one. But across standards it is many-one. An alternative interpretation using the parts-whole relation fails, because that relation should be understood as many-one identity. Another alternative making identity (...) relative to sort fails, because whole and parts can be of the same sort. (shrink)

Some researchers have claimed that there is no significant correlation between students’ majors and their performance on standardized critical thinking tests. This paper provides both evidence and arguments that that claim may well be false. Besides arguments based on the correlation between students’ majors and other standardized tests, data from Baker University’s Critical Thinking and Writing Program show large differences in effect size gains relative to students’ majors.

Confucius gave counsel that is notoriously hard to follow: "What you do not wish for yourself, do not impose on others" (Huang 1997: 15.24). People tend to be concerned with themselves and to be indifferent to most others. We are distinct from others so our self-concern does not include them, or so it seems. Were we to realize this distinctness is merely apparent--that our true self includes others--Confucius's counsel would be easier to follow. Concern for our true self would extend (...) concern beyond the narrow selves we appear to be. The neo-Confucians held just such a view. They espoused an identity with the universe and everything in it, arguing that this identity explains a natural concern for everyone and everything, not just for our narrow selves. However, many things in the universe differ from each other, that is, some have qualities others lack. If they are all one and the same thing then that one thing differs from itself. I will suggest that the objection can be answered with some metaphysical innovation. I will address the objection by sketching a theory--call it the theory of aspects--that explains how numerically identical things can differ qualitatively. (shrink)

Construing the instantiation of a universal by a particular in terms of my theory of aspects resolves the basic mystery of this "non-relational tie", and gives theoretical unity to the four characteristics of instantiation discerned by Armstrong. Taking aspects as distinct in a way akin to Scotus's formal distinction, I suggest that instantiation is the sharing of an aspect by a universal and a particular--a kind of partial identity. This approach allows me to address Plato's multiple location and One over (...) Many problems, Bradley's problem concerning the instantiation of relations, and the problem of change. (shrink)

After summarizing Plantinga’s critique of “classical foundationalism” and his substitute, Reformed epistemology, the paper argues that Reformed epistemology has so many problems that it is not an adequate substitute for classical foundationalism. Given Plantinga’s reformed epistemology, believers of any religion could have “knowledge of their God.” This is because Plantinga has not set forth the justifying conditions necessary to distinguish between “properly basic beliefs” as opposed to improperly basic beliefs. Given such problems, it is more reasonable to stick with classical (...) foundationalism rather than Plantinga’s substitute. (shrink)

Over the last few years, there have been five best sellers critical of religion and religious belief. It seems that there is great interest in questions about religious belief. Ironically, critical thinking texts seldom examine the topic. This paper will evaluate eight arguments to exempt religious belief from rational critique. I conclude that the topic of religious belief should not be exempt from critical thinking classes.

Is a social complex identical to many united people or is it a group entity in addition to the people? For specificity, I will assume that a social complex is a plural subject in Margaret Gilbert’s sense. By appeal to my theory of Aspects, according to which there can be qualitative difference without numerical difference, I give an answer that is a middle way between metaphysical individualism and metaphysical holism. This answer will enable answers to two additional metaphysical questions: (i) (...) how can two social complexes have all the same members and (ii) how can there be a social complex of social complexes? (shrink)

This is a brief response to David Wright’s commentary on my paper, “Critical Thinking Instruction: A Realistic Evaluation: The Dream vs. Reality.” Wright claims that if one looks more closely at the literature on critical thinking assessment that the reported effect sizes for CT instruction are quite respectable and my standards are too high. My comments will focus is on whether effect size is both problematic and an adequate measure for assessment.