Causal Clarity Prevents the Emergence of Social Biases in Children’s Excusing of Mistakes

In two studies, we examined how 5-­year-­olds weigh similarity against other factors in deciding from whom to learn. Specifically, we examined the factors of history of and reasons for inaccuracy in Experiment 1 (n = 64) and of competence and authority in Experiment 2 (n = 32). In the 1st phase of Experiments 1 and 2, children’s social biases were tested: 5-year-olds met both a similar informant (SI) and a dissimilar informant (DI). These informants were puppets (Experiment 1) or human teachers (Experiment 2). Children could select either informant as a source of object names. Across experiments children systematically preferred learning from the SI over DI. In the 2nd phase of Experiment 1, both informants first provided accurate information and then 1 of them became inaccurate during an event that clearly explained (being blindfolded) or did not explain (wearing a scarf) the inaccuracy. For half the children, the SI was accurate and the DI was inaccurate. Only after inaccuracy events that were causally unclear did children showcase similarity biases in their subsequent learning preferences. Experiment 2 showed that identifying a DI as a teacher (a profession associated with positive attributes) failed to counter children’s similarity bias. These findings provide important insights on contextual factors that contribute to children’s favoring of socially meaningful others.     

HIV infection and mental health: suicidal behaviour--systematic review

Suicide has long been associated with serious illness generally and HIV specifically. New treatments have affected prognosis in HIV positively, but it is unclear how they impact on suicidal burden (thoughts, self-harm and completions). This review examines all published suicide and HIV data for a definitive account of (1) prevalence of HIV-related suicidality, (2) measurement within studies and (3) effectiveness of interventions. Standard systematic research methods were used to gather quality published papers on HIV and suicide, searching published databases according to quality inclusion criteria. From the search, 332 papers were generated and hand searched resulting in 66 studies for analysis. Of these, 75% were American/European, but there was representation from developing countries. The breakdown of papers provided 12, which measured completed suicides (death records), five reporting suicide as a cause of attrition. Deliberate self-harm was measured in 21, using 22 instruments; 16 studies measured suicidal ideation using 14 instruments, suicidal thoughts were measured in 17, using 15 instruments. Navigating the diverse range of studies clearly points to a high-suicidal burden among people with HIV. The overview shows that autopsy studies reveal 9.4% of deceased HIV+?individuals had committed suicide; 2.4% HIV+?study participants commit suicide; approximately 20% of HIV+?people studied had deliberately harmed themselves; 26.9% reported suicidal ideation, 28.5% during the past week and 6.5% reported ideation as a side effect to medication; 22.2% had a suicide plan; 19.7% were generally "suicidal" (11.7% of people with AIDS, 15.3% at other stages of HIV); 23.1% reported thoughts of ending their own life; and 14.4% expressed a desire for death. Only three studies recruited over 70% female participants (39 studies recruited over 70% men), and six focussed on injecting drug users. Only three studies looked at interventions - predominantly indirect. Our detailed data suggest that all aspects of suicide are elevated and urgently require routine monitoring and tracking as a standard component of clinical care. There is scant evidence of direct interventions to reduce any aspect of suicidality, which needs urgent redress.     

Macropremies: underprivileged newborns

The focus of neonatal intensive care has been on very low birthweight infants, who comprise only 1.4% of neonates. Too little attention is paid to moderately preterm infants that we call macropremies or moderately low birthweight infants (MLBW, with birthweights 1500-2500 grams). Admitting over half MLBW infants to normal nurseries presumes that they have few needs and an excellent prognosis similar to fullterm newborns. It does not take into account the macropremie's vulnerability to complications of prematurity due to immature organ systems. Obstetricians are increasingly willing to deliver these infants prematurely for signs of fetal distress. As many as 25% of children with cerebral palsy referred to a disability clinic in Paris were MLBW, with hypoxic-ischemic-inflammatory associated disorders in one-third. The majority of MLBW infants who required neonatal intensive care at a tertiary care center in Baltimore had complications of prematurity: 47% had respiratory problems, 20% had feeding intolerance and 9% had hypoglycemia. MLBW infants comprise 5-7% of the neonatal population but account for 14% of neonatal deaths, 18-37% of children with cerebral palsy and 7-12% of children with mental retardation. Increasing the level of neonatal care for the macropremie's transition to extrauterine life would be economically feasible if it prevented as few as 30% of cases of major disability. A change in attitude towards this low risk (but not risk free) group of MLBW infants will both reduce morbidity and improve their health and neurodevelopmental outcome. It includes: 1) Providing an intermediate level of neonatal care for a short duration, with close monitoring and prompt intervention as needed, and 2) Neonatal neurodevelopmental screening to allow focused neurodevelopmental followup of MLBW infants with abnormalities.     

An integrated device to evaluate a driver’s functional state

In the field of cognitive ergonomics, research on car drivers requires multimodal in-vehicle systems for recording not only driving-related behavior, but also contextual information from their surroundings. In addition, reliable information concerning a driver’s functional state should be obtained. In this article, we describe an integrated device simultaneously recording specific physiological data, video recordings of the driver and environment, parameters from the vehicle, and contextual data. Physiological signals from the autonomic nervous system provide objective and quantitative information on the driver’s alertness and his/her ability to process specific driving-related stimuli or other nonspecific information. Consequently, recorded physiological responses can be related to individual driving events. Electrodermal and cardiac activities are sensitive to time-dependent variations in arousal level and to certain external stimuli, so there is great interest in studying drivers’ behavior via measured physiological signals that have been established as suitable behavioral indicators. The present integrated device is capable of processing the relevant indices from raw measured data in real time.     

Discontinuités culturelles et linguistiques: Portraits d’immigrants francophones en milieu minoritaire

Using ethnographic methods, this article explores the experiences and the challenges that immigrants face in the areas of language and culture. Seven narratives on social integration, school experiences, and more generally life experiences as immigrants, were used to explore the phenomenon of cultural and linguistic discontinuities in a francophone minority context in Manitoba. A thematic analysis reveals specific linguistic and sociocultural challenges that need to be addressed in community organizations. This article offers suggestions for more equitable and inclusive practices.     

Intrasession and intersession habituation in mice: From inbred strain variability to linkage analysis

When placed in a novel environment, mice tend to explore for a period of time, and then reduce the level of exploration. This reduction in locomotor or exploratory behavior is known as habituation and can occur within a single session or across sessions, respectively, termed intrasession and intersession habituation. Recent research indicates that there is a genetic component to habituation behavior and that some of the genes involved differ between the two types of habituation. The genetic evidence also suggests that intrasession habituation and intersession habituation are measuring somewhat different conceptual entities and with more such evidence may eventually help us understand the different pathways involved. Some of the genetic methods and tools used to unravel the roles of specific genes in both types of habituation are outlined here, with examples from the literature, as well as new data, to illustrate that this seemingly simple behavior is actually very complicated in terms of genetics. Evidence to date suggests that a number of genetic regions play roles in one or both types of habituation, and further research will be necessary to determine the specific genes involved.     

Towards a New Kind of Semantic Normativity

Abstract

Hannah Ginsborg has recently offered a new account of normativity, according to which normative attitudes are essential to the meaningful use of language. The kind of normativity she has in mind –– not semantic but ‘primitive’ — is supposed to help us to avoid the pitfalls of both non-reductionist and reductive dispositionalist theories of meaning. For, according to her, it enables us both to account for meaning in non-semantic terms, which non-reductionism cannot do, and to make room for the normativity of meaning, which reductive dispositionalism cannot do. I argue that the main problem with Ginsborg’s account is that it fails to say what makes it possible for expressions to be governed by conditions of correct application to begin with. I do believe, however, that normative attitudes are essential to meaning, but they have to be thought of as fully semantic. And I suggest that conditions of correct application can be present only when those attitudes are present.     

Frontal and striatal brain lesions increase susceptibility to masking in perceptual decisions

Recent data suggest that perceptual decisions on masked stimuli involve neural activity in frontal cortex. We examined the effect of damage to frontal and striatal brain regions in man on the susceptibility to backward masking in rapid stimulus streams. Patients with unilateral frontal excisions and patients with early Huntington's disease were compared to controls in the identification of a brief white letter embedded in short streams of black letters at two presentation rates: (a) 9 letters/s; (b) 12.5 letters/s and also in a control condition in which the first post-target masking letter was absent. Patients could identify the target when the post-target mask was absent, but reducing the delay between stimuli significantly increased the error rates in patients. Intrusion errors often involved reporting post-target or pre-target distractors instead of the target. These results suggest that fronto-striatal lesions increase the period during which perceptual decisions are susceptible to perturbation. This deficit is compatible with a functional role of frontal systems in the cognitive control of brief perceptual decisions.