Event-related potential practice effects on the Paced Auditory Serial Addition Test (PASAT)

Practice can change the nature and quality of a stimulus-response relationship. The current study observed the effects of repeated administration of the Paced Auditory Serial Addition Test (PASAT) in 12 healthy individuals, in an effort to establish distinct profiles associated with novel and practiced processing. Over four training sessions the mean number of correct responses on this demanding test of attention significantly improved and was approaching ceiling for most task conditions. Behavioural improvements were associated with significantly reduced amplitude of late Processing Negativity, a frontally distributed component of the event-related potential waveform associated with voluntary, limited-capacity activity within higher-order attentional systems. These results suggest that PASAT performance became more efficient as practice seemingly eased the strategic planning and coordination requirements the task places on frontally-mediated executive attention resources. The findings of the current study extend our understanding of the functional and behavioural mechanisms underlying the effects of practice.     

An effect size measure and Bayesian analysis of single-case designs

This article describes a linear modeling approach for the analysis of single-case designs (SCDs). Effect size measures in SCDs have been defined and studied for the situation where there is a level change without a time trend. However, when there are level and trend changes, effect size measures are either defined in terms of changes in R² or defined separately for changes in slopes and intercept coefficients. We propose an alternate effect size measure that takes into account changes in slopes and intercepts in the presence of serial dependence and provides an integrated procedure for the analysis of SCDs through estimation and inference based directly on the effect size measure. A Bayesian procedure is described to analyze the data and draw inferences in SCDs. A multilevel model that is appropriate when several subjects are available is integrated into the Bayesian procedure to provide a standardized effect size measure comparable to effect size measures in a between-subjects design. The applicability of the Bayesian approach for the analysis of SCDs is demonstrated through an example.     

Users of secondary school‐based counselling services and specialist CAMHS in Wales: A comparison study

Background: The increasing prevalence of mental health issues in young people has contributed to a rise in the provision of school‐based counselling services in the UK. Between 2008/09 and 2010/11, data were collected from users of secondary school‐based counselling services in Wales. Aims: To identify the characteristics of users of school‐based counselling services in Wales – including demographics, referral pathways, presenting issues, and predominant issues – and how they compare to users of specialist CAMHS in Wales and Welsh secondary school pupils in general. Method: Data were collected on 10,687 episodes of counselling. School counsellors completed a client record sheet after each counselling episode and submitted these to their Local Authority. Collated results were then compared to matched data from Welsh specialist CAMHS and Welsh secondary schools data. Results/findings: A typical user of a secondary school‐based counselling service in Wales was female, of white ethnicity, and from the ‘middle’ school years. There was a marked under‐representation of users from BME backgrounds. Users were most often referred by school staff, and the most common presenting issues were family‐related, anger, and behaviour‐related. Conclusions: There was a higher proportion of females accessing school‐based counselling services than males. This was in direct contrast to data from specialist CAMHS and possible explanations for this are discussed. The under‐representation of BME populations suggested that there were some equality issues associated with accessing these services. Implications for practice: Future research should explore equality issues associated with young people from BME backgrounds accessing intervention services.     

Public Participation In The 1970s Channel Tunnel Debate Part II: The Garden Tunnel Alternative

Public participation in the 1970s Channel Tunnel system designdebates assumed the form of protest and calls for regulation andcompensation in the area most affected: the Garden of England,particularly around the tunnel entrance near Folkestone as well asthe land that would be used to accommodate the increase in lorriesand automobiles bound for the tunnel. The environmental protest(and the then Labour government's willingness to accommodate it)eventually led to expensive design changes to the Channel Tunnelsystem, and, according to most analysts, was one of the mostsignificant factors behind the cancellation of the project in 1975 (cf.Bonavia, 1987).Far less attention has been paid to the other significant outcomeof tunnel resistance in Kent, which was formulated during the publicdebate at the Royal Society of Arts (RSA) in 1973, and eventuallytranslated into a concrete system design proposal. Apart from theenvironmentalist voice, another set of garden interests emerged,dedicated to preserving and reviving the 'train in the garden'. Morein the pastoralist tradition, social groups coalesced to formulate whatmay be termed the 'Garden Tunnel' alternative. In the ChannelTunnel debate of the 1970s is the story of how loosely structuredpublic participation yielded a culturally acceptable system design.     

Richard Popkin – A Personal Memoir

This article is an introduction to an ancient Egyptian text called The Tale of the Eloquent Peasant and an argument that it ought to be seen as a classic of political philosophy. After contextualizing the tale as part of a tradition of moral and political philosophy in ancient Egypt, I explore the methods by which the text defines the proper roles of political authority and contrast its approach to justifying political authority with the argument from the state of nature so common in modern Western political philosophy. I claim that the tale's argument from dysfunction anticipates the move in contemporary Western political philosophy towards privileging non-ideal over ideal theory. I discuss challenges in translating the key term in the tale – ma'at – in light of the fact that it can be taken to mean ‘justice’ and/or ‘truth’. Finally, I discuss how the irony at the heart of its narrative can lead us to interpret the tale as having either conservative or revolutionary implications for the political system it depicts.     

The personality correlates of adults who had imaginary companions in childhood

Two studies showed that adults who reported having an imaginary companion as a child differed from adults who did not on certain personality dimensions. The first yielded a higher mean on the Gough Creative Personality Scale for the group who had imaginary companions. Study 2 showed that such adults scored higher on the Achievement and Absorption subscales of Tellegen's Multidimensional Personality Questionnaire. The results suggest that some differences reported in the developmental literature may be observed in adults.     

College students' intentions to seek help for suicidal ideation: accounting for the help-negation effect

Prior research has identified a negative association between suicidal ideation and help-seeking, a phenomenon called "help-negation." Help-negation has been documented to occur for both professional and nonprofessional sources of help. In this study help-seeking attitudes, stigma concerns, and perceptions of social support were examined as possible mediators of help-negation. Data were collected from a nonclinical sample of college undergraduates at a midwestern university (N = 321). Findings provided partial support for the mediation hypotheses. Help-seeking attitudes and stigma were significant predictors of help-seeking intentions (β = .34 and β = -.17, p < .05, respectively), but did not mediate help-negation for professional sources. Perceptions of social support, on the other hand, fully mediated help-negation for nonprofessional sources (β = .27, p < .05).     

HIV Testing Experience and Risk Behavior Among Sexually Active Black Young Adults: A CBPR-Based Study Using Respondent-Driven Sampling in Durham,North Carolina

African Americans are disproportionately affected by the HIV epidemic inclusive of men who have sex with men, heterosexual men, and women. As part of a community‐based participatory research study we assessed HIV testing experience among sexually active 18–30 year old Black men and women in Durham, NC. Of 508 participants, 173 (74 %) men and 236 (86 %; p = 0.0008) women reported ever being tested. Barriers to testing (e.g., perceived risk and stigma) were the same for men and women, but men fell behind mainly because a primary facilitator of testing—routine screening in clinical settings—was more effective at reaching women. Structural and behavioral risk factors associated with HIV infection were prevalent but did not predict HIV testing experience. Reduced access to health care services for low income Black young adults may exacerbate HIV testing barriers that already exist for men and undermine previous success rates in reaching women.