Do Not Revise Ockham's Razor Without Necessity

Ockham's razor asks that we not multiply entities beyond necessity. The razor is a powerful methodological tool, enabling us to articulate reasons for preferring one theory to another. There are those, however, who would modify the razor. Schaffer (2010: 313—our italics), for one, tells us that, ‘I think the proper rendering of Ockham's razor should be ‘Do not multiply fundamental entities without necessity’’. Our aim, here, is to challenge such re‐workings of Ockham's razor.     

A Living Life, A Living Death: Bessie Head��s Writing as a Survival Strategy

This paper explores Bessie Head's writing as a survival strategy through which she transformed her lived experience into imaginative literature, giving meaning and purpose to a life under permanent threat from the dominant group first in South Africa and later in Botswana. This threat included the destructive effect of the many fixed labels imposed upon her including: a 'Coloured' woman, the daughter of a woman designated mad, an exile, a psychotic, a tragic black woman, and a Third World woman writer. Her endeavours to avoid and defeat such limited, static definitions produced work characterised by contradiction and paradox, through which she asserted her right to survive and determined, like Makhaya in When Rain Clouds Gather, to establish 'a living life' in place of the 'living death that a man could be born into' (Head 1989, 136). Through a combination of Head's personal letters and papers and her published work, it can be seen how her particular preoccupations and experiences including her life in exile, her beliefs about her origins, her relationship to her absent mother, her distress, her madness and her need for love and for work were transformed into writing which expresses not only the destructive circumstances of her life but also its life-affirming aspects. Her writing was also a means by which she could create identities to express the dangers she encountered from the all-pervasive power structures which influenced her life and her sense of self, as well as ways to transcend them, enabling her to say in the last years of her life 'I am no failure' (20.2.1986 KMM BHP).     

A Systematic Review and Meta-analysis of Narrative Language Abilities in Children with Attention-Deficit/Hyperactivity Disorder

Research on Child and Adolescent Psychopathology - While children with ADHD are reported to have language problems, it is less clear if their ability to use language to tell a story (i.e., form a...     

Challenges for the sequential two-system model of moral judgement

Considerable evidence supports the sequential two-system (“default interventionist”) model of moral judgement, as proposed by Greene and others. We tested whether judgement speed and/or personal/impersonal moral dilemmas can predict the kind of moral judgements (utilitarian or deontological) subjects make for each dilemma, and whether personal dilemmas create difficulty in moral judgements. Our results showed that neither personal/impersonal conditions nor spontaneous/thoughtful-reflection conditions were reliable predictors of utilitarian or deontological moral judgements. Yet, we found support for an alternative view, in which, when the two types of responses are in conflict; the resolution of this conflict depends on both the subject and the dilemma. While thinking about this conflict, subjects sometimes change their minds in both directions, as suggested by the data from a mouse-tracking task.     

A Meta‐Analytic Review of Child‐Centered Play Therapy Approaches

The authors explored the overall effectiveness of child‐centered play therapy (CCPT) approaches through a meta‐analytic review of 52 controlled outcome studies between 1995 and 2010. Hierarchical linear modeling techniques estimated a statistically significant moderate treatment effect size (.47) for CCPT, as well as statistically significant relationships between effect size and study characteristics, including child's age, child's ethnicity, caregiver involvement, treatment integrity, publication status, and presenting issue.     

How serious are expressions of protected values?

People think that some things that they value should be protected from trade-offs with other things. For example, people think that no economic gain is great enough to justify clear-cutting old-growth forest. The authors probed the stability of these protected values (PVs) in several ways. Subjects were asked to think of counterexamples, and this had some effect on PVs. Subjects were then asked how they would resolve conflicts between 2 PVs. Resolutions did not differ from those between other values, but subjects tended to feel that conflicts between PVs did not occur in reality. Despite people's claims that PVs are unchanged by variation in quantity, expression of PVs was reduced when the magnitude or probability of the violation of a PV was smaller. In summary, PVs appear to be labile and amenable to challenge. Despite earlier concerns, apparent PVs may not always preclude the use of valuation measures in cost-effectiveness analysis or negotiated agreement on controversial issues.     

Simple movement imitation: Are kinematic features sufficient to map perceptions into actions?

The aim of this study was to pinpoint the nature of the visual features used in the automatic mapping of perceived movements into similar executed movements, following the direct matching hypothesis. In Experiment 1 subjects imitated the lifting of one of two fingers, presented with different orientations. As predicted, stimuli which were further rotated away from the posture of the executing hand elicited slower reaction times. In Experiment 2, we verified that this orientation effect was not a purely perceptual effect by presenting the same stimuli but asking subjects to respond verbally. No orientation effect was found using a verbal response. In Experiment 3, we replaced the moving fingers by two arbitrary objects moving with the trajectories of the finger tips of Experiment 1. The same orientation effect as in Experiment 1 was observed. We conclude that in this experiment participants are using purely kinematic features to map perceived into executed movements.