Truth and epistemic value

The notion of more truth, or of more truth and less falsehood, is central to epistemology. Yet, I argue, we have no idea what this consists in, as the most natural or obvious thing to say—that more truth is a matter of a greater number of truths, and less falsehood is a matter of a lesser number of falsehoods—is ultimately implausible. The issue is important not merely because the notion of more truth and less falsehood is central to epistemology, but because an implicit, false picture of what this consists in underpins and gives shape to much contemporary epistemology.     

Forensic psychology and Islamic jurisprudence

Islamic jurisprudence is the most widely used system of religious law in the world today. However, how forensic psychology may operate within this system has been largely unexplored. The current review sets out to explore the relationship between Islamic jurisprudence and forensic psychology by examining the Islamic legal concepts of evidence, competence, insanity, psychological disorder and intellectual disability and their implications for forensic practice. Also discussed are the potential barriers to forensic psychological practice in countries using a system of Islamic law.     

More human than you: attributing humanness to self and others

People typically evaluate their in-groups more favorably than out-groups and themselves more favorably than others. Research on infrahumanization also suggests a preferential attribution of the "human essence" to in-groups, independent of in-group favoritism. The authors propose a corresponding phenomenon in interpersonal comparisons: People attribute greater humanness to themselves than to others, independent of self-enhancement. Study 1 and a pilot study demonstrated 2 distinct understandings of humanness--traits representing human nature and those that are uniquely human--and showed that only the former traits are understood as inhering essences. In Study 2, participants rated themselves higher than their peers on human nature traits but not on uniquely human traits, independent of self-enhancement. Study 3 replicated this "self-humanization" effect and indicated that it is partially mediated by attribution of greater depth to self versus others. Study 4 replicated the effect experimentally. Thus, people perceive themselves to be more essentially human than others.     

Prefrontal cortex and the mediation of proactive interference in working memory

Mediating proactive interference (PI), the deleterious effect of antecedent information on current memory representations, is believed to be a key function of prefrontal cortex (PFC). Item-specific PI results when an invalid probe matches a memorandum from the preceding trial; item-nonspecific PI is produced by the accumulation of no-longer-relevant items from previous trials. We tested the hypothesis that these two types of PI are mediated by common PFC-based processes with an fMRI study of a delayed-recognition task designed to produce both types of PI. Our results indicated that the fMRI correlates of both effects were restricted both to Brodmann’s area 45 in the left hemisphere and to the memory probe epoch of the trial. These results suggest that a unification of the literatures and approaches that have independently studied these phenomena might offer a fruitful new perspective from which to study the relations between working memory, executive control, and the PFC.     

Using image analysis techniques to analyze figure-copying performance of patients with visuospatial neglect and control groups

Figure copying is often used to detect visuospatial neglect (VSN) in brain-damaged patients. We describe algorithms that enable the computation of parameters for describing figure-copying performance. The researcher can readily implement these algorithms on a computer using image analysis software, and they provide information on goodness-of-fit, relative to a standard model, as well as on dynamic aspects of subjects’ performance in completing figure copies. To demonstrate the clinical utility of these algorithms, preliminary results from a group of right-hemisphere brain-damaged patients, some of whom have VSN, are compared with those for age-matched controls.     

On the alleged failure of free will theodicies: A reply to Tierno

In a recent issue ofSophia Joel Tierno contends that free will theodicies are fundamentally flawed insofar as they claim to provide an adequate explanation for God’s permission of moral evil. Free will, according to Tierno, only accounts for our ability to make certain choices that issue in evil, but fails to account for the fact that we often do make such choices. However, the argument developed by Tierno, despite its initial appeal, embodies an important misunderstanding of the nature of free will theodicies and in particular the libertarian conception of human freedom customarily employed by these theodicies.     

Similarity as transformation

We propose that similarity is determined by the transformation distance between representations: entities which are perceived to be similar have representations which are readily transformed into one another, whereas transforming between dissimilar entities requires many transformations. We present three experiments that indicate that similarity is strongly influenced by transformation distance. These data present a challenge for featural or spatial accounts of similarity. Finally, we introduce a family of transformation-based accounts of similarity, called 'Representational Distortion', as a specific example of a transformational approach to similarity.     

Thirsty for H2O? Multiple essences and psychological essentialism

Within psychology, essentialism has often been understood as the imputation of a hidden natural underpinning that determines the identity and membership of a given category. This naturalistic understanding has failed to address the varied and multi-faceted manner in which essentialist beliefs function on a cognitive level. Specifically, such an understanding does not account for essentialist beliefs that are related to functional categories derivative of a particular individual's present needs or social context. A parsimonious theory of psychological essentialism that accounts for beliefs in essences with respect to all categories, including those believed to be “natural”, is found in the writing of James (The Principles of Psychology, Vol. 2, Dover, New York, NY, 1890/1950). After accounting for the manner in which James’ theory addresses the limitations of the naturalistic view and extends it, it is recommended that his theory be incorporated into future empirical study of psychological essentialism.     

On the field aspect of Quantum fields

In this paper we contrast the idea of a field as a system with an infinite number of degrees of freedom with a recent alternative proposed by Paul Teller in Teller (1990). We show that, although our characterisation lacks the immediate appeal of Teller's, it has more success producing agreement with intuitive categorisations than his does. We go on to extend the distinction to Quantum Mechanics, explaining the important role that it plays there. Finally, we take some time to investigate the way in which strings are to be considered fields, and the important differences with scalar fields. Overall, we aim to show that many types of systems may be viewed as fields, and to point out significant distinctions amongst them, thereby expanding our understanding of what it is to fall in this category.Thanks to our anonymous referees for invaluable comments.     

Child protection investigations: Discourse analysis and the management of incommensurability

This paper asks whether discourse analytic approaches in social psychology have yet produced methodologies adequate to the investigation of institutional ‘gaze’. Institutional language has been explored to the extent that state agencies construct members of the public by speaking about them in particular ways. This has often provided insight into the co-existence and competition of incommensurable discourses. However, studies of representation in the sense of speaking for have been notably absent from social psychology. It is argued that this aspect of discourse is a vital component in the study of contemporary governmental multi-agency strategy in the area of child protection, where recent legislation and policy aims at the coordination of incommensurable discourses. A methodology for studying this strategy is outlined through an account of the actor network approach in science studies, accounts of the State under the post-modern condition, and analyses of sections of interviews with social workers.