Revising Probabilities and Full Beliefs

Journal of Philosophical Logic - A new formal model of belief dynamics is proposed, in which the epistemic agent has both probabilistic beliefs and full beliefs. The agent has full belief in a...     

Revising Beliefs Towards the Truth

Belief revision (BR) and truthlikeness (TL) emerged independently as two research programmes in formal methodology in the 1970s. A natural way of connecting BR and TL is to ask under what conditions the revision of a belief system by new input information leads the system towards the truth. It turns out that, for the AGM model of belief revision, the only safe case is the expansion of true beliefs by true input, but this is not very interesting or realistic as a model of theory change in science. The new accounts of non-prioritized belief revision do not seem more promising in this respect, and the alternative BR account of updating by imaging leads to other problems. Still, positive results about increasing truthlikeness by belief revision may be sought by restricting attention to special kinds of theories. Another approach is to link truthlikeness to epistemic matters by an estimation function which calculates expected degrees of truthlikeness relative to evidence. Then we can study how the expected truthlikeness of a theory changes when probabilities are revised by conditionalization or imaging. Again, we can ask under what conditions such changes lead our best theories towards the truth.     

Composing and Revising a Counselor's Narrative

In exploring his narrative as counselor, this author was led to new growth and insights. Defining the counselor's narrative may be an important supplement to client narrative therapy.     

Revising Test Items to Increase Validity

Eight female interviewers varied their interview styles in interviewing 207 adults who had been involved in automobile accidents during a four-year period. A “professional” and a rapport or “interpersonal” style was used. Dependent variables consisted of reporting of events related to an automobile accident in which the respondent was the driver, and for which independent criterion data were available. In addition, the amount of health information reported was also analyzed. In spite of the respondents' more favorable attitudes towards the interpersonal interviews, accuracy was not significantly greater in these rapport interviews. In fact, significant interaction effects between interviewer style and recency of the accident were obtained. Respondents, however, reported more completely under rapport conditions. The results are interpreted within a cognitive, role-learning framework.     

Revising the Logic of Logical Revision

Philosophical Studies -     

From Friendship to Marriage: Revising Kant

This paper examines Kant's accounts of friendship and marriage, and argues for what can be called an ideal of "moral marriage" based on Kant's notion of moral friendship. After explaining why Kant values friendship so highly, it gives an account of the ways in which marriage falls far short, according to Kant, of what friendship has to offer. The paper then argues that many of Kant's reasons for finding marriage morally impoverished compared with friendship are wrong-headed. The paper further argues that a few of Kant's views about friendship are false. The main point is that, when we slightly revise Kant's account of friendship and jettison Kant's misguided notions about marriage, we see that marriages can aspire to much of the same moral richness as friendships. Finally, the paper argues that this friendship model of marriage does not obscure the important ways in which marriages and friendships differ.     

Revising the Competitiveness Index using factor analysis

The Competitiveness Index is a 20-item true-false measure designed to assess the desire to win in interpersonal situations. To develop a more psychometrically sound form of the scale, 213 undergraduates were administered the original form and a modified version containing a 5-point Likert-type scale. An initial principal component analysis using a varimax rotation of the modified version yielded a four-factor solution accounting for 54.5% of the explained variance. Based on a subsequent reliability analysis. six items were dropped from the modified scale. A second analysis produced a two-factor solution accounting for 54.1% of the explained variance. Both factors (Enjoyment of Competition and Contentiousness) formed reliable subscales. The 14-item Revised Competitiveness Index had high internal consistency and was positively correlated with the original Competitiveness Index, the competitiveness subscales of the Work and Family Orientation Questionnaire, the Sports Orientation Questionnaire, and the Nach Naff measure of Need for Achievement.     

Revising the history of Cold War research ethics

President Clinton's charge to the Advisory Committee on Human Radiation Experiments included the identification of ethical and legal standards for evaluating government-sponsored radiation experiments conducted during the Cold War. In this paper, we review the traditional account of the history of American research ethics, and then highlight and explain the significance of a number of the Committee's historical findings as they relate to this account. These findings include both the national defense establishment's struggles with legal and insurance issues concerning human experiments, and the medical profession's perspective on human experimentation in the years following the Nuremberg Medical Trials. We conclude that the Committee's work both enriches the traditional view of the history of research ethics and opens important new areas for study.     

A Practical Approach to Revising Prioritized Knowledge Bases

This paper investigates simple syntactic methods for revising prioritized belief bases, that are semantically meaningful in the frameworks of possibility theory and of Spohn's ordinal conditional functions. Here, revising prioritized belief bases amounts to conditioning a distribution function on interpretations. The input information leading to the revision of a knowledge base can be sure or uncertain. Different types of scales for priorities are allowed: finite vs. infinite, numerical vs. ordinal. Syntactic revision is envisaged here as a process which transforms a prioritized belief bases into a new prioritized belief base, and thus allows a subsequent iteration.     

Revising Process Metaphysics in Response to Ian Barbour's Critique

In Religion in an Age of Science , Ian Barbour concludes that the contemporary evolutionary worldview with its emphasis on the interplay of law and chance, relationality and autonomy, can be properly accounted for only by something like the process-relational metaphysics of Alfred North Whitehead. At the same time, he expresses serious reservations about certain features of Whitehead's scheme, notably, his perceived inability to account for the ongoing identity of the human self and for the fact of multilevel organization within organisms and in the world of inanimate compounds. In this article, I suggest that both of these difficulties can be resolved if one adopts a revisionist understanding of the Whiteheadian category of society according to which democratically organized societies possess an ontological unity and exercise a corporate agency proper to their own level of existence and activity. Furthermore, if one applies this revisionist understanding of societies to the Whiteheadian doctrine of God, a Trinitarian understanding of God becomes possible within the overall parameters of process-relational metaphysics. In this way, traditional belief in the doctrine of the Trinity can be reconciled with a scientifically credible worldview.     

Feminist Biologies: Revising Feminist Strategies and Biological Science

Rebecca Hannagan’s analysis of gender and leadership based in evolutionary biology challenges scholars to integrate research in biology with feminist insights. This commentary argues that this is a timely challenge and that that the project of integrating feminism and evolutionary biology in accounts of gender is necessary for bringing about more equitable futures. However, the commentary also suggests that biological inputs should be understood as operating within categories that feature substantial variation, that change through time, that are not independent and complete sources of human outcomes, and that biological factors interact with language and culture.