A phenomenalist philosophy which employs the Principle of Acquaintance (PA) plus the Principle that what exists are the referents of certain meaningful terms, defined by PA, cannot include either universals or particulars in its ontology, but is limited to instances of universals as constituting the range of ontological existents. Universals must be omitted since they are repeatable and, hence, never wholly presented or contained, whereas the objects of direct acquaintance are wholly and exhaustively presented. Furthermore, no entities beyond characters (qualities and relations) are given in direct acquaintance; hence, particulars, too, must be omitted for the phenomenalist who relies on PA.

Our purpose in this paper is to characterize the methodological role of judges in clinical psychology. What, methodologically speaking, do the judges do for the experimenter in this area? Why, and in what ways, are the experimenter's procedures more respectable, his results more valid, when he employs judges? In order to present a concrete example of the use of judges we begin by describing in some detail a procedure actually employed in the testing of an hypothesis. Next we contrast this procedure with a prima facie analogous one from chemistry, noting that an appeal to judges here would be clearly superfluous. Our problem then presents itself in the form: “Why these sorts of differences between chemistry and clinical psychology?”. As the argument develops it becomes clear that the methodological significance of what is called “clinical insight” (or “intuition”) must be carefully considered in any attempt to understand the peculiar importance of the judges’ role in psychology. It is argued that the absence of precise criteria for typical concepts of clinical psychology is closely connected with the frequent appeals to clinical insight. And it is urged that the full significance of the employment of judges emerges only when seen in the light of this conceptual uncertainty, and of the clinician's attempt to operate scientifically in spite of that uncertainty.

Many philosophers accept a nonreductive physicalist view of at least some special sciences, which is to say that while they assert that each particular referent of any special science term is identical to some referent of a physical term, or token physicalism, they deny that special science types are identical to physical types. The most commonly cited reason for this position is Jerry Fodor's antireductionist argument based on the multiple realizability of many special science terms. I argue that if token physicalism is true, as nonreductive physicalists believe, then this multiple-realization argument fails to preclude reductive physicalism.

This article is about the analogy between inclusive fitness and utility. In behavioral ecology, it is often assumed that individual organisms behave as if they were “striving” to maximize their inclusive fitness—a measure analogue to the kind of utility function that is used to represent the preferences of rational agents. Here, I explore some conceptual puzzles related to this view and question whether the kind of biological utility posited by the advocates of the “maximizing agent analogy” can be adequately interpreted in inclusive fitness terms.

In a book and a series of articles (1977a, 1977b, 1977c, 1978) Harold I. Brown has presented “the new theory of science”, which he characterizes as a “modest historicism”. I propose to examine Brown's contribution to the current debate on scientific method, and to show the inadequacy of his proposals. In particular, I want to concentrate on a fundamental concern of Brown's, namely, rationality.

Malcolm Acock (1983) attempts to show that three widely accepted “solutions” to the philosophical problem of theory choice between the ordinary account of the age of the universe, and “Russell's hypothesis” that the world sprang into existence five minutes ago, are unsatisfactory. In the following paper we shall attempt to show why “Russell's hypothesis” is defective as a cosmological explanation of the age of the universe.

Mayo (1987) sought to discredit Urbach's (1985) arguments against randomization as a universal requirement in clinical and agricultural trials. The present reply rebuts Mayo's criticisms.

In this paper I show that Goodman's theory of projectibility, although partly successful, is inadequate since it fails to take into consideration the “approximate” nature of certain scientific hypotheses.

Paul Needham has claimed in several recent papers that Dalton's chemical atomism was not explanatory. I respond to his criticism of Dalton by arguing that explanation admits of degrees and that under a view that allows for a spectrum of explanatory value, it is possible to see ample worth in Dalton's atomistic explanations. Furthermore, I argue that even Duhem, who rejected atomism, acknowledged the explanatory worth of Dalton's atomism.

The fundamental problem of what is explained in science should be considered and clarified since it determines the way of solving the problem of how something is explained as well as the entire view of explanation. In the first section after the introduction, Hempel's models of explanation are criticized for their narrow concern with logical reconstruction. In the next section a broader epistemological approach to explanation is presented, and in the last section an historical example of Newtonian explanation as epistemic activity is discussed.

This paper takes the first steps in the construction of a theory of event identity as that theory applies to historical sentences. The theory is extensional throughout. Following statements of criteria of adequacy for the construction, Davidson's method of regimenting sentences is adopted in order to allow for variables ranging over events. Events in this theory are only partially construed, that is, to the extent of treating them as concrete individuals rather than as classes or repeatable universals. The paper concludes with a statement of several theorems and definitions and an example of how the theory works.

In (Cupples 1977), it was argued that Professor David Kaplan's model of S-explanation could be formulated so as to provide a unified framework for three types of explanation, viz., potential, rationally acceptable, and true. In this note I correct an error in the statement of the conditions for a potential direct S-explanans, show that the corrected version leads to a further simplification in the conditions of the model, and propose a fourth type of explanation which the framework of S-explanation can accommodate.

The infant was first an embryo. Its body is neither new nor untried. Its heart, its liver, lungs and brain, all its nerves and tissues, were in existence some time before, constantly exercised in embryonic ways. The new born infant is an old campaigner on quite familiar terrain.

The embryo begins as a single cell feeding on the food its mother provides. Almost at once it becomes too large, too sluggish and inefficient for its own good, and must either immediately change its tactics and mode of life or be prepared to die. This is an alternative which all growing things face from time to time. The lowest organisms meet the issue by subdividing into a number of similar, smaller, independent cells, each with a life of its own. The embryo meets it by subdividing into a number of different kinds of cells all of which are capable of developing and living according to individual rhythms, but only a few of which are able to exist or develop all alone. Most of the new cells the embryo makes possible must cling to and remain under its sway if they are to continue and prosper at all.

In the introduction to Probabilistic Metaphysics (1984), Patrick Suppes declares his intention to refute each of five central tenets of “neotraditional metaphysics”. These tenets run as follows:

1. (1) The future is determined by the past.

2. (2) Every event has a sufficient determinant cause.

3. (3) Knowledge must be grounded in certainty.

4. (4) Scientific knowledge can in principle be made complete.

5. (5) Scientific knowledge and method can in principle be unified.