The Impact of P-hacking on “Redefine Statistical Significance”

In their proposal to “redefine statistical significance,” Benjamin et al. claim that lowering the default cutoff for statistical significance from .05 to .005 would “immediately improve the reproducibility of scientific research in many fields.” Benjamin et al. assert specifically that false positive rates would fall below 10% and replication rates would double under the lower cutoff. I analyze these claims here, showing how the failure to account for P-hacking and other widespread reporting issues leads to exaggerated and misleading conclusions about the potential impact of the .005 proposal.     

Ideological parsimony

The theoretical virtue of parsimony values the minimizing of theoretical commitments, but theoretical commitments come in two kinds: ontological and ideological. While the ontological commitments of a theory are the entities it posits, a theory’s ideological commitments are the primitive concepts it employs. Here, I show how we can extend the distinction between quantitative and qualitative parsimony, commonly drawn regarding ontological commitments, to the domain of ideological commitments. I then argue that qualitative ideological parsimony is a theoretical virtue. My defense proceeds by demonstrating the merits of qualitative ideological parsimony and by showing how the qualitative conception of ideological parsimony undermines two notable arguments from ideological parsimony: David Lewis’ defense of modal realism and Ted Sider’s defense of mereological nihilism.     

Development of a Research Instrument for Evaluating the Visitor Outcomes of Face-to-Face Interpretation

ABSTRACT

This article details the development, testing, and refinement of a set of indicators and a data collection instrument designed to be used to evaluate the outcomes of face-to-face interpretation across a range of heritage-based visitor settings and experiences. One of a suite of data collection instruments, the self-completing visitor questionnaire incorporates a set of indicators that (a) reflects the types of visitor outcomes that managers actually want from their interpretive programs; (b) is theoretically valid based on what is known about the potential cognitive, affective, and behavioural outcomes of interpretation, and (c) requires minimal effort, expense, and little or no social research expertise to collect and analyse the data, yet produces results with acceptable validity and reliability. While management and industry-driven, the research is underpinned by some thirty years of evaluation theory and practice, and is thus grounded in theories of psychology and human behaviour and methods from the social sciences and from applied program evaluation. This makes the final set of indicators an important contribution to the literature, and the questionnaire itself a useful and practical tool for those whose expertise and responsibilities lie primarily with managing and delivering rather than researching and evaluating the outcomes of interpretation.     

TORTUROUS AMBIVALENCE: Judaic Struggles with Torture

A surprising lack of consensus exists among contemporary Jewish scholars about Judaism's position vis‐à‐vis torture. Some claim that Judaism condones torture while others insist that Judaism condemns it. These diverging opinions on such a troubling practice suggest an ambivalence deep within the Judaic textual tradition about torturing bodies. This brief essay critiques both perspectives for twisting the textual tradition and offers some preliminary suggestions for a more robust Judaic approach to torture.     

Comparison of output order in free recall

Two measures of output order in free recall were examined and shown to vary with characteristics of recall unrelated to output order. The output location of a subset of items in recall, using the standard recall rank measure and the “observed minus expected” score, varied both with number of items in the subset and total number of items recalled. A new measure of output order (the relative index of priority or RIP score) was proposed that is invariant with these characteristics of recall, providing an uncontaminated empirical index of the output location of a subset of items in the recall sequence.     

Mathematical Explanation and Epistemology: Please Mind the Gap

This paper draws together two strands in the debate over the existence of mathematical objects. The first strand concerns the notion of extra‐mathematical explanation: the explanation of physical facts, in part, by facts about mathematical objects. The second strand concerns the access problem for platonism: the problem of how to account for knowledge of mathematical objects. I argue for the following conditional: if there are extra‐mathematical explanations, then the core thesis of the access problem is false. This has implications for nominalists and platonists alike. Platonists can make a case for epistemic access to mathematical objects by providing evidence in favour of the existence of extra‐mathematical explanations. Nominalists, by contrast, can use the access problem to cast doubt on the idea that mathematical objects play a substantive role in scientific explanation. 1     

Psychoanalytic Engagements With Death: Discussion of Martin Frommer’s “Death Is Nothing at All: On Contemplating Non-Existence”

In this discussion, I reflect on some historical, theoretical, and clinical implications of Martin Frommer’s thesis that death anxieties are best navigated via reaffirming attachments with that which is beyond the self. Frommer’s examples of active engagement with his patients in personal modes of discourse about shared existential concerns are considered in terms of the ethics and responsibilities of self-disclosure and the therapist’s own subjective reactions to the death anxieties. Frommer’s contribution is applauded as an exemplar of relational psychoanalytic therapy that incorporates and goes beyond Freud’s formulations of internal processes of identification with the deceased.