Low-level temporal coding impairments in psychosis: preliminary findings and recommendations for further studies

The authors investigated whether difficulties with temporal event coding, previously reported in patients with schizophrenia, are already present during first-episode psychosis (FEP). In this experiment, the subjective judgments of the simultaneity of visually presented stimuli were compared between 11 healthy controls, 9 patients with chronic schizophrenia (CSZ), and a sample of 11 FEP patients. Participants were asked to indicate whether 2 vertical bars appeared at the same time or at different times on a computer monitor. CSZ patients' thresholds were elevated, and the FEP sample showed higher thresholds relative to controls. Although preliminary, these findings indicate a generalized disturbance in event-structure coding at early stages of psychosis and question the specificity of its disturbance. Considering the proposed relationship between event-structure coding and the experience of time in general, this study recommends that future studies refocus on psychosis in general, rather than on schizophrenia as a particular case of abnormal temporal processing. In addition, it is suggested that the relevant psychopathology will be best determined by means of a comprehensive analysis of low-level temporal coding performance in different types of psychosis.     

Visual adaptation to a spatial contrast enhances visual evoked potentials

The effects of adaptation to the visual contrast of a counterphase grating were studied with visual evoked potentials (VEPs). The spatial frequency of the grating was 4 cpd, and its temporal frequency was 4 or 12 Hz. Steady-state VEPs were analyzed through an FFT (fast Fourier transform) algorithm. In the first experiment, contrast thresholds rose strongly just after the end of adaptation and declined regularly over time. The VEPs recorded in the medio-occipital lead showed an initial decrease in amplitude after adaptation, followed by an enhancement well above the preadaptation level and then a return to that level. The paradoxical enhancement of the VEP was found at both high and low contrast in both the medio-occipital lead and the right temporal lead of a right-handed subject. The left temporal leads showed a VEP enhancement at high contrast and a decline at a low value.     

Physical activity and sedentary lifestyle in children as time-limited functions: Usefulness of the principal component analysis method

This study was designed to examine the hourly variation in and the interplay between physical activity and sedentary behavior (SB) in order to highlight key time periods for physical activity interventions for children. Data for physical activity and SB obtained with ActiGraph in 56 boys and 47 girls aged from 8 to 11 years. These data were divided into sixty minute-time samples for moderate-to-vigorous physical activity (MVPA) and SB, and analyzed using a principal component analysis (PCA) and correlation statistics. The PCA provides 10 factors which account for 80.4% of the inertia. Only two of these factors did not display competition between MVPA and SB. Contrary to some reports, a coefficient of correlation of -.68 (p < 10(-4)) was found between daily time spent at MVPA and SB. Some salient traits of children's behaviors were shown through PCA. The results suggested that efficacy of interventions targeting the morning hours (07:00 AM-11:59 AM) and the afternoon period (02:00 PM-05:59 PM) warrants attention.     

Defensive dining: notes on the public dining experiences in Singapore

This paper examines the relationship between an individual’s degree of religiosity (or piety) and his/her participation in everyday life in a secular, cosmopolitan and multicultural society such as Singapore, by focusing on the practice of public dining. Given that Islam has dietary restrictions (‘halal’), this paper hypothesizes that a devout Muslim might be placed in a situation of considerable unease when dining publicly, as the external environment may conflict with these restrictions. The research for this paper involved interviews with 20 Singaporean Muslims, who have described themselves as being ‘devout’ and ‘practicing’, asking about their views on dining at public food courts or hawker centers. It finds that rather than choosing to avoid these situations, they engaged in a series of defensive strategies to accommodate their religious obligations as well as intercultural interactions, to a certain degree. This paper concludes that because deeply religious Muslims in Singapore implement ‘defensive dining,’ concerns about self-exclusion, isolationism and separatism are probably unfounded, as these individuals appear willing to participate in multicultural and cosmopolitan everyday life.     

Monitoring processes and metamemory experience in patients with dysexecutive syndrome

The aim of the present study was to determine whether monitoring measures are differentially disturbed in dysexecutive patients after frontal lesions. Twelve dysexecutive patients and 12 healthy controls were administered a paired-associates learning task. Their performances on recall prediction, judgment-of-learning (JOL), and feeling-of-knowing judgment (FOK) were then compared. The results revealed that the two groups differed only on accuracy measures of the FOK paradigm. The study of the overall correlations between the three measures of metamemory revealed a significant relation between recall prediction and accuracy measures of the JOL. We failed to find any significant correlation with the accuracy measures of the FOK. Taken together, our data confirm that metamemory experience is not a unitary construct but rather a group of distinct and quite independent mechanisms.     

Adapting Attachment and Biobehavioral Catch-up for infants and young children with intellectual disabilities and developmental delays in South Africa: Reflections and recommendations from local stakeholders

Attachment and Biobehavioral Catch-up (ABC) is an intervention targeted at enhancing the socioemotional and regulatory functioning of at-risk infants. However, to use the ABC for infants/toddlers with intellectual disabilities/developmental delays (ID/DD) and in novel cultural contexts, such as South Africa, adaptations may be required. This study aimed, therefore, to explore the opinions of clinical experts and perceptions of caregivers regarding the use of ABC for children with ID/DD in South Africa. It also sought to incorporate the experiences of families of children with ID/DD who received, and intervenors who delivered, ABC in its first implementation in South Africa. Semi-structured interviews were conducted with 18 participants. Thematic analysis explicated 12 main themes: Intervention Strengths, Points of Concern, and Recommendations (Experts); Focus on Caregiver-child Relationship, and Intervention Targets and Duration (Caregivers); Benefits of ABC, and Cultural Considerations (ABC Recipients); Focused and Targeted, Value of Feedback, Supportive Supervision, Working Alliance, and Challenges Experienced (ABC Intervenors). Practice and training recommendations include psychoeducation for parents and training for intervenors that is ID/DD-specific, expanding supervision capacity, building intervenors’ cultural/linguistic sensitivity and competence, accessing referral networks, including local Community Health Workers as intervenors, and greater flexibility in how the sessions are organized.     

The role of religious leaders in anti-Apartheid mobilisation: implications for violence prevention in contemporary South Africa

This study examines how South African religious leaders mobilised spiritual capacity and religious assets to resist and fight against state and structural violence during the 1970s and 1980s. Document analysis and qualitative in-depth interviews were conducted with six key informants who were directly or indirectly involved in an interfaith Peace March in 1989 in Cape Town. Our analysis was aimed at identifying and understanding the factors, which enabled individuals from diverse religious backgrounds to work together to combat the Apartheid state and structural violence, drawing out possible roles for interfaith leadership within the prevention of direct violence in South Africa. The analysis shows that interfaith leadership was enacted as five kinds of performances: of safety in sacred spaces, solidarity and community, non-violence, voice and representation, and humanitarian relief and healing. These performances relied on specific religious assets, spiritual capacity and psychological and interpersonal qualities characteristic of transformative leaders. In conclusion, we offer some suggestions for how interfaith leadership alongside other social actors may contribute to the prevention of interpersonal violence.