Evolution and medicine: the long reach of "Dr. Darwin"

In this review we consider the new science of Darwinian medicine. While it has often been said that evolutionary theory is the glue that holds the disparate branches of biological inquiry together and gives them direction and purpose, the links to biomedical inquiry have only recently been articulated in a coherent manner. Our aim in this review is to make clear first of all, how evolutionary theory is relevant to medicine; and secondly, how the biomedical sciences have enriched our understanding of evolutionary processes. We will conclude our review with some observations of the philosophical significance of this interplay between evolutionary theory and the biomedical sciences.     

Subclinical delusional ideation and appreciation of sample size and heterogeneity in statistical judgment

Previous studies demonstrate that people high in delusional ideation exhibit a data‐gathering bias on inductive reasoning tasks. The current study set out to investigate the factors that may underpin such a bias by examining healthy individuals, classified as either high or low scorers on the Peters et al. Delusions Inventory (PDI). More specifically, whether high PDI scorers have a relatively poor appreciation of sample size and heterogeneity when making statistical judgments. In Expt 1, high PDI scorers made higher probability estimates when generalizing from a sample of 1 with regard to the heterogeneous human property of obesity. In Expt 2, this effect was replicated and was also observed in relation to the heterogeneous property of aggression. The findings suggest that delusion‐prone individuals are less appreciative of the importance of sample size when making statistical judgments about heterogeneous properties; this may underpin the data gathering bias observed in previous studies. There was some support for the hypothesis that threatening material would exacerbate high PDI scorers' indifference to sample size.     

Impulsive nonconformity in female chat room users.

Heavy chat room use has been associated with social isolation, introversion, impulse control problems, and risk taking. Such characteristics form part of the cluster of traits associated with schizotypy. This study used multiple regression to examine the relationship between age, sex, four dimensions of schizotypy, and frequency of reported chat room use. The only significant association with schizotypy was between frequency of chat room use and impulsive nonconformity (IN) in females. These findings may be explained by the increased risk associated with female chat room use.     

Non-Accidental Knowing

Knowledge excludes luck. According to the received view, this intuition reveals that knowing is essentially modal in character. This paper demurs. Either knowledge does not exclude luck, or the entailment reveals nothing about its conceptual character. It is argued that knowledge excludes accidentality, and that this notion is not modal but causal-explanatory. There are three central tasks. The first is to explicate the concept of accident. The second is to argue that the concepts of luck and accident are “intensionally distinct,” which is to say that no member of the intension of either holds on both. The third is to argue that an anti-accident requirement on knowledge is preferable to an anti-luck analogue on abductive grounds.     

Psychological therapy in prisons: Professionals’ perceptions

This study explored professionals’ perceptions of providing psychological therapy in prisons. Eight professionals, affiliated with counselling as well as counselling, clinical and forensic psychology, were interviewed. A social constructionist paradigm was used to understand how social and discursive practices shaped professionals’ accounts, allowing for critical engagement with taken-for-granted practices. Participants’ accounts were analysed using a social constructionist informed thematic analysis. Four themes were constructed: (a) performing therapy, (b) humanising the client, (c) frames inside frames and (d) a challenging but rewarding experience. The findings of this investigation indicated that therapy provision was interwoven with the socio-political ideals governing prison, which created a conflict between therapeutic values and penal values. This conflict has important implications for establishing and maintaining ethical and deontological practices in prison, particularly surrounding the dynamics power. The study indicated it is important for professionals to monitor and manage potential stigma and discrimination within therapy or service delivery. The results also found that working in prisons is a complex experience, which requires careful consideration for enhancing professional development for the prison therapist.     

Paper or plastic? Data equivalence in paper and electronic diaries

Concern has been raised about the lack of participant compliance in diary studies that use paper-and-pencil as opposed to electronic formats. Three studies explored the magnitude of compliance problems and their effects on data quality. Study 1 used random signals to elicit diary reports and found close matches to self-reported completion times, matches that could not plausibly have been fabricated. Studies 2 and 3 examined the psychometric and statistical equivalence of data obtained with paper versus electronic formats. With minor exceptions, both methods yielded data that were equivalent psychometrically and in patterns of findings. These results serve to at least partially mollify concern about the validity of paper diary methods.     

Truth As,At Most,One

Michel Foucault's Force of Flight: Toward an Ethics of Thought By James W. Bernauer Humanities Press International, 1990. Pp. 261. ISBN 0–391–03740–4. $15.00 pbk.

Hipparchia's Choice, An Essay Concerning Women, Philosophy, Etc. By Michèle Le Doeuff, translated by Trista Selous Basil Blackwell, 1991. Pp. vii + 364. ISBN 0–631–17639‐X. £45.

Psychology Edited by Stephen Everson Cambridge University Press, 1991. Pp. 269. ISBN 0–521–35338–6. £32.50.

On the Nature and Existence of God By Richard M. Gale Cambridge University Press, 1991. Pp. 422. ISBN 0–521–40300–6. £35.

The Good Polity: Normative Analysis of the State Edited by Alan Hamlin and Philip Pettit Basil Blackwell, 1989, pbk 1991. Pp. vii + 207. ISBN 0–631–18088–5. £14.95 pbk.

Language, Saussure and Wittgenstein: How to play games with words By Roy Harris Routledge, 1988, pbk 1990. Pp. xv +136. ISBN 0–415–05225–4. £9.99 pbk.

Plausible Worlds: Possibility and Understanding in History and the Social Sciences By Geoffrey Hawthorn Cambridge University Press, 1991. Pp. xiii + 192. ISBN 0–521–40359–6. £27.50.

Freedom, Truth and History: An Introduction to Hegel's Philosophy By Stephen Houlgate Routledge, 1991. Pp. 288. ISBN 0–415–06658–1. £35.

Locke on Money. Volumes I and II By Patrick Hyde Kelly Clarendon Press, 1991. Vol. 1 Pp. xv + 342. ISBN 0–19–82456–7. £50.00 Vol. II Pp. vii + 322. ISBN 0–19–824837–7 £45.00.

L'Union substantielle. I. Blondel et Leibniz By Marc Leclerc Culture et Vérité, 1991. Pp. v + 415. ISBN 2–87299–014–3.

Plato's Parmenides By C. C. Meinwald Oxford University Press, 1991. Pp. 192. ISBN 0–1–506445–3. £27.50.

Idee und Weltwille: Schopenhauer als Kritiker Hegels By Alfred Schmidt Carl Hanser Verlag, 1988. Pp. 175. ISBN 3–446–15161–3.     

Projective invariance and picture perception

Four experiments test the assumption that, in the visual perception of pictures, observers have reliable and direct access to the equivalence of shapes in projective geometry. The assumption is that perception of projective equivalence is the basis of shape constancy ('the projective thesis'). Observers matched or reproduced abstract planar shapes under conditions of rotation in the picture plane, and pictured rotation in depth. Departure from projective equivalence was assessed in each study by measuring the planar analogue of cross ratio. Projective equivalence was not found to be perceived uniformly where Euclidean equivalence was not judged uniformly, either in recognition tasks or in production tasks. When the projective thesis is put to a suitably general test, confidence in the thesis is undermined.     

Subclinical delusional ideation and a self‐reference bias in everyday reasoning

Previous studies (e.g. Moller & Husby, 2000 ; Blackwood et al., 2004 ) have revealed that delusional thinking is accompanied by an exaggerated focus upon the self and upon stimuli that are perceived to be related to the self. The objective was to examine whether those high in subclinical delusional ideation exhibit a heightened tendency for self‐reference. Using a mixed design, healthy individuals, classified into high‐ and low‐scoring groups on the Peters et al. Delusions Inventory ( Peters, Day, & Garety, 1996 ), were compared on everyday reasoning tasks across three experiments. High‐PDI scorers, in contrast to the low‐PDI group, rated self‐referent objections to everyday arguments as stronger than other‐referent objections and formulated more self‐referent assertion‐based objections to everyday arguments. The findings support the notion that subclinical delusional ideation is linked to a self‐reference bias, which is evident in the sort of everyday thinking that people engage in when forming or evaluating their beliefs and which may contribute to delusion formation.