Presentism,truthmakers and distributional properties

Presentists face a challenge from truthmaker theory: if you hold that the only existing objects are presently existing objects and, moreover, you agree that truth supervenes on being, then you will be hard pressed to identify some existent on which a given true but traceless claim about the past supervenes. Cameron (Philos Books 49:292–301, 2008, Oxford Studies in Metaphysics, In: D Zimmerman (ed), 2011) aims to meet this challenge by appeal to distributional properties. So, to give a simple example, the truth that you were once a child supervenes on you presently instantiating the property of being initially a child and then an adult, a property distributed over time. I argue that a presentist ought to deny that distributional properties can serve as truthmakers.     

"The Great Transformation" and suicide: local and long-lasting effects of 1930 bank suspensions

Depression-era bank suspensions and failures are conceptualized as products of the first part of what Polanyi (1994) called "The Great Transformation," which involved an imbalanced institutional arrangement in which the economy dominated other institutions. Relying on Durkheim (1897/1951) and Merton (1938, 1968), it is argued that these banking problems accentuated the type of chronic anomie that Durkheim theorized would create normative deregulation and elevated suicide rates over the long-term. Results from county-level analyses are supportive as the 1930 bank suspension rate is positively related to the 2000 suicide rate, controlling for contemporary and historical factors. The mediating roles of integration and chronic anomie are considered, with the latter measured using data from the geocoded General Social Survey.     

We're all career researchers now: breaking open career education and DOTS

This paper reviews career education in the UK's statutory, further and higher education sectors, and finds that, despite considerable changes in theory, provision remains based on the traditional DOTS model of decision learning, opportunity awareness, transition learning and self-awareness. It is argued that the persistent and hegemonic status of this model has delayed the adoption of innovative theory and the development of creative new frameworks. In order to provide policy and practice with new perspectives, a critical reassessment of the DOTS model is conducted, focusing on three areas: theoretical roots; individual-environment interpenetration; and self-opportunity matching. The role of students as career researchers, illustrated by examples drawn from current career education practice, is proposed to indicate new directions for both subject specialists and careers workers.     

Justice Beyond Borders

Liberal theories of social justicefocus predominantly on the national, ratherthan international, level, and where they doaddress international concerns they insist thatprinciples of justice at the national levelhave priority over principles at theinternational level. We question the coherenceof this arrangement, given liberal theory'scommitment to moral equality of persons as suchrather than to that of particular sets of persons. What isat issue is whether liberal theory can providea coherent basis for international justice atall. If it is to do so, we suggest that it mustbe prepared to theorise beyond the nationstate, and to take a historical perspectivewhich takes into account the ways in whichcolonial power and exploitation have given riseto the problems of international justice weface today. This revised version was published online in July 2006 with corrections to the Cover Date.     

Previous mindfulness experience interacts with brief mindfulness induction when reducing stimulus overselectivity

The current study examined the effects of a brief mindfulness induction on overselectivity. Participants were randomly assigned to a mindfulness, unfocused attention (relaxation), or no‐intervention group. Participants experienced their designated intervention for 10 min, and they underwent simultaneous discrimination training (AB+ CD?) followed by an extinction test (AvC, AvD, BvC, and BvD). Levels of mindfulness were measured by the Toronto Mindfulness Scale, and participants were asked about their previous experience with mediation and mindfulness practice. Mindfulness reduced overselectivity, and previous levels of mindfulness experience identified by a single question moderated this effect, with mindful‐experienced participants showing less overselectivity. Both findings have some practical utility in the ongoing investigation of the possible use of mindfulness in medical settings.     

Prevalence of pathological Internet use among university students and correlations with self-esteem, the General Health Questionnaire (GHQ), and disinhibition.

Over the last few years, there has been increased interest in the addictive potential of the Internet. The current study was an attempt to replicate common findings in the literature and provide more evidence for the existence of Internet addiction among students--a population considered to be especially vulnerable. A total of 371 British students responded to the questionnaire, which included the Pathological Internet Use (PIU) scale, the General Health Questionnaire (GHQ-12), a self-esteem scale, and two measures of disinhibition. Results showed that 18.3% of the sample were considered to be pathological Internet users, whose excessive use of the Internet was causing academic, social, and interpersonal problems. Other results showed that pathological Internet users had lower self-esteem and were more socially disinhibited. However, there was no significant difference in GHQ scores. These results are discussed in relation to the methodological shortcomings of research in the area as a whole.     

Resurgence of response sequences during extinction in rats shows a primacy effect

Rats were trained to emit a series of three-response sequences to a criterion (i.e., more than 80% of all emitted sequences correct over five successive sessions). Each rat was trained on a series of different, three-response sequences. After the final three-response sequence was acquired, two extinction tests were administered, and the three-response sequences that re-emerged during these extinction tests were noted. Resurgence effects during extinction were observed; that is, the previously trained sequences were emitted. These resurgence effects followed an orderly pattern, which involved a primacy effect. The rats initially emitted the immediately previously trained response, but then started to emit the response sequence they first were trained to emit. Thus, resurgence behavior during extinction can be an orderly function of previous training history. These results replicate those previously obtained with human subjects.     

A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts

How differences between the two sides of the brain (or 'laterality') relate to level of function are important components of theories of the origin and purpose of hemispheric asymmetry, although different measures show different relationships, and this heterogeneity makes discerning any underlying relationships a difficult task. There are some exceptions, for example it has been concluded that increasing lateralization (eg of hand skill or planum temporale area) occurs at the expense of the non-dominant hemisphere. However, we have previously demonstrated this latter relationship to be an artefact: a consequence of plotting two variables against each other, that are not independent of each other [Leask, S. J., & Crow, T. J. (1997) How far does the brain lateralize? An unbiased method for determining the optimum degree of hemispheric specialisation. Neuropsychologia, 36, 1275-1282; Mazoyer, B. M., & Tzourio-Mazoyer, N. G. (2004). Title Planum temporale asymmetry and models of dominance for language: a reappraisal. Neuroreport, 15, 1057-1059]. Two approaches to discerning any underlying relationships are presented in data from over 20,000 10- and 11-year olds from the 1958 and 1970 UK national cohort studies. These demonstrate that maximal performance, both cognitive and hand function, is found in association with one particular degree of functional lateralization.     

The effect of signaled reinforcement on rats' fixed-interval responding

Four experiments examined the effect on rats' response rate of presenting a brief (500 ms) stimulus simultaneously with the delivery of food on fixed-interval (FI) schedules. In Experiment 1, reinforcement signals that were spatially diffuse (both tones and lights) elevated rates of responding, but responding was attenuated by localized visual stimuli. The remaining experiments examined the signal-induced potentiation of responding. In Experiment 2, a tone reinforcement signal potentiated response rates on an FI schedule, but attenuated response rates on a variable-interval (VI) schedule. This difference was obtained even though the overall rate of responding was equated on the two schedules before the introduction of the signal. Signal-induced potentiation of responding occurred over a range of FI values employed in Experiment 3. In Experiment 4, presenting a reinforcement signal when high local rates of response had occurred immediately before reinforcement resulted in potentiated rates of responding on an FI schedule. The opposite effect on response rate occurred when the reinforcement signal followed only low local rates of response. These results indicate that a variety of factors influence the effects of a reinforcement signal. They imply, however, that the local rate of response at the time of reinforcement is a key factor in establishing the nature of the signaling effect.