The aim of this paper is twofold. Firstly, I give a brief account of the history of the debate on the problem of defining disposition concepts from its beginning in the late 1920s until today. This account is divided into four parts, corresponding with 2, 3, 4 and 5 of the paper, each of which deals with a major period of the debate. Section 2 reports up to the mid-1950s. Section 3 deals with important contributions to the discussion between 1955 (...) and 1958. However, the progress made around that time was far ahead of the logical theory and techniques which were needed for foundational reasons and for a better understanding of the basic notions. Some logical techniques appropriate for that aim were developed in the late 1960s and early 1970s. Though not uncontroversial, those logical techniques resulted in improvements of the insights gained in the mid-1950s; I shall report on those logical techniques and their application to the problem of defining disposition concepts in Section 4. In the early 1990s, however, the whole tradition of defining disposition concepts in terms of conditionals has been challenged by some strong counter-examples which are treated in Section 5. Finally, the second of the aims of this paper is explored in Section 6, in which I sketch very briefly the current stage of the debate by discussing and evaluating the most recent approaches to the subject. (shrink)

If one proposes to analyze dispositions by means of statements involving only the 'if-then' of material implication--that is, for example, to define 'x is soluble' by means of 'x is in water ⊃ x dissolves'--then one faces the problem first raised by Carnap, the match which is never put in water and which therefore turns out to be not only soluble but also both soluble and insoluble. I have elsewhere argued that if one refers to appropriate laws, then one can (...) provide an account of disposition predication that solves Carnap's problem while requiring no sense of 'if-then' other than that of material implication. Harre and Madden have argued that a variant of this proposal--one in which the relevant law is restricted to one that relates the disposition to internal structures--is more adequate. It is argued that the proposal of Harre and Madden is in fact not adequate. It leads to an implausible infinite regress of dispositions and ever finer internal structures, which Harre and Madden avoid only by introducing "Parmenidean individuals." The examples they give turn out to involve dispositions not grounded in internal structures, and so support our analysis; while the explicit description of such individuals by Harre and Madden involves the incoherent idea that two individuals can share all categorical properties while differing in their dispositions. The position of Harre and Madden thus turns out to be equivalent to ours or to be incoherent. (shrink)

Addis (1981) has criticized a proposal of ours (Wilson [1969b]) for analysing disposition predications in terns of the horseshoe of material implication, and has proposed a related but significantly different analysis. This paper restates the original proposal, and defends it against Addis's criticisms. It is further argued that his proposal will not do as a general account of disposition predications; that, however, if it is suitably qualified, then it does account for certain special sorts of disposition predication; but that so (...) understood, it can be seen to be but a special case of ours. (shrink)

According to the theory of dispositions here defended, to have a disposition is to have some (non-dispositional) property that enters into a law of a certain form. The theory does not have the crucial difficulty of the singular material implication account of dispositions, but at the same time avoids the unfortunate notion of 'reduction sentences'. It is further argued that no dispositional explanation is one of the covering-law type; but the theory shows how, for any dispositional explanation! To construct a (...) potential explanation of the covering-law type. The theory can also be applied fruitfully to human behavior, especially with respect to the issues of reasons and causes and of' rational' explanation. The success of the applicability of this theory of dispositions is further evidence of its adequacy. (shrink)