The General Form of the Proposition: The Unity of Language and the Generality of Logic in the Early Wittgenstein

The paper presents an interpretation of the thinking behind the early Wittgenstein's "general form of the proposition." It argues that a central role is played by the assumption that all domains of discourse are governed by the same laws of logic. The interpretation is presented partly through a comparison with ideas presented recently by Michael Potter and Peter Sullivan; the paper argues that the above assumption explains more of the key characteristics of the "general form of the proposition" than Potter and Sullivan suppose, including, in particular, its claim that the bases from which all other propositions are derived must be elementary propositions.     

An evaluation of the effectiveness of Diploma-level training in cognitive behaviour therapy

Background

As part of the UK government’s initiative to Increase Access to Psychological Therapies (see http://www.iapt.nhs.uk/for full details of the IAPT programme) there has been an expansion in the provision of post-graduate Diploma training in cognitive behaviour therapy (CBT). Previous evaluations of such training programmes have yielded mixed results but have been limited by small sample sizes and/or limited assessment measures.

Aims

To evaluate the impact of a long-standing Diploma in CBT training programme on a variety of measures of CBT competence.

Method

Trainees’ levels of CBT skill are compared at the beginning and end of CBT training. The effect of therapist factors such as age, professional background and gender on the development of CBT competence is also examined.

Results

Results show that trainees demonstrate higher levels of CBT skills after completing the training than they did before, with the majority achieving pre-determined criteria for competence. Trainees’ gender was not related to their performance but trainees’ age showed a negative association with CBT skill (older trainees performed worse). Trainees’ professional background also had an impact on their level of CBT competence, with trainees who were clinical psychologists demonstrating the highest levels of competence across a range of measures.

Conclusions

CBT Diploma training leads to increases in the level of trainees’ CBT competence, with the majority achieving the levels demonstrated in research trials by the end of training. Thus, this training is likely to lead to improved outcomes for patients. Further research is needed to determine the most efficient ways of enhancing CBT skills.     

Meta-analytic findings reveal lower means but higher variances in visuospatial ability in dyslexia

Conflicting empirical and theoretical accounts suggest that dyslexia is associated with either average, enhanced, or impoverished high-level visuospatial processing relative to controls. Such heterogeneous results could be due to the presence of wider variability in dyslexic samples, which is unlikely to be identified at the single study level, due to lack of power. To address this, this study reports a meta-analysis of means and variances in high-level visuospatial ability in 909 non-dyslexic and 956 dyslexic individuals. The findings suggest that dyslexia is associated not only with a lower mean performance on visuospatial tasks but also with greater variability in performance. Through novel meta-analytic techniques, we demonstrate a negative effect size for mean differences (−.457), but a positive effect size for SD differences (+.118; SD ratio = 1.107). In doing so, this is the first study to demonstrate impoverished visuospatial processing of the majority of individuals with dyslexia in addition to greater variance in performance in this group. The findings advocate for further consideration of both the presence of, and reasons for, increased variance in perception, attention, and memory across neurodevelopmental disorders.     

The psychometrics of photographic cropping: the influence of colour, meaning, and expertise

Cropping is the central act of photography, the viewfinder of a camera being used to crop a portion of the visual world which is then surrounded with a frame. Six studies are described which show that the act of cropping is carried out reliably and confidently by both expert and non-expert participants. Two studies confirm that some croppers are better croppers than others, their cropped images being preferred aesthetically over the croppings of less-good croppers. Colour had little impact on cropping decisions, whereas thresholded monochrome images ('Mooney images') dramatically altered crop positions. That suggests that cropping can be driven top-down, by the meaning of objects in photographs, but the fact that the Mooneyised images are still cropped consistently, suggests that image structure, perhaps in the form of low-level image properties, may still be important. Experts crop pictures differently from non-experts, and they take longer, viewing a wider range of possible crops, pausing longer to assess crops, and using more formal terminology when reflecting on their cropping decisions. Experts' crops are not, however, preferred more, either by non-expert viewers or by expert viewers. Cropping, it is suggested, is an ideal paradigm for experimental aesthetics, allowing precise experimental control with Fechner's Method of Production, a technique which normally is not easy to use.     

Trauma Among Unaccompanied Homeless Youth: The Integration of Street Culture into a Model of Intervention

Homeless adolescents comprise a population particularly vulnerable to developing symptoms of post-traumatic stress. Research has shown that prevalence of trauma-related symptoms among homeless youth living in shelters and on the streets without families is approximately 18%. The detrimental effects of traumatic experiences often inhibit homeless youths' ability to employ the psychosocial skills necessary to a transition out of homelessness. Consequently, interventions targeting the mitigation of post-traumatic stress symptoms among this population are crucial. This article aims to address the symptoms and needs of unaccompanied homeless youth who experience post-traumatic stress disorder symptomatology and offers a strength-based intervention framework for understanding, identifying, and beginning to address trauma-related mental health needs within the cultural context and experience of youth homelessness.     

Heidegger,Wittgenstein and St Paul on the Last Judgement: On the Roots and Significance of ‘The Theoretical Attitude’

The article examines Heidegger's lectures on St Paul and provides, in particular, a reading of their discussion of the remarks on the parousia in the letters to the Thessalonians. This reading serves a number of purposes. First, it makes clear how Heidegger's appropriation of a certain ‘anti-theological’ tradition helped first give a sense to his notion of ‘the theoretical attitude’, a problematic notion that plays a central role in his mature early philosophy. Second, it illustrates, and thus helps to refine the identity of, a particular kind of recognizably ‘phenomenological’ reflection that attempts to distance itself precisely from that ‘attitude’; and third, it points to a new perspective on some central and problematic themes in Heidegger's better known early writings and, in particular, their discussion of assertions. An identification of some remarkable similarities between Heidegger's remarks on the Last Judgement and remarks of Wittgenstein's help identify this perspective.     

The handedness of Leonardo da Vinci: a tale of the complexities of lateralisation

The handedness of Leonardo da Vinci is controversial. Although there is little doubt that many of his well-attributed drawings were drawn with the left hand, the hatch marks of the shading going downwards from left to right, it is not clear that he was a natural left-hander, there being some suggestion that he may have become left-handed as the result of an injury to his right hand in early adulthood. Leonardo's lateralisation may be illuminated by an obscure passage in his notebooks in which he describes crouching down to look into a dark cave, putting his left hand on his knee, and shading his eyes with his right hand. We carried out a questionnaire survey, using 33 written and photographic items, to find whether this behaviour was typical of right handers or left handers. In fact the 'Leonardo task' showed almost no direct association with handedness, meaning that it contributes little to the immediate problem of elucidating Leonardo's handedness. However, the lateralisation of the task did relate to other aspects of behavioural laterality in surprisingly complex ways. This suggests that individual differences in handedness, and behavioural laterality in general, have a structural complexity which is not fully encompassed by simple measures of direction or degree of handedness.