Personality traits and university program

Participants were 147 undergraduates majoring in programs classified as more professional (education, n = 28; business, n = 33) or less professional (natural sciences, n = 36; social science, n = 50) and more people-oriented (education, social sciences) or less people-oriented (business, natural sciences). They completed self-report tests for 13 personality constructs (five from Goldberg's version of the Five Factor Model, three from Eysenck and Eysenck's theory, and five others). Students in less professional disciplines scored higher on openness to experience (intellect/imagination) than those in more professional disciplines. Students in more people-oriented disciplines scored higher on empathy than those in less people-oriented disciplines. Women scored higher than men on conscientiousness, industriousness, and empathy, but lower than men on independence. Critical comments are offered and suggestions for research are made.     

The Institute of Medicine's report on non-heart-beating organ transplantation

In December 1997, the Institute of Medicine (IOM) released a report on medical and ethical issues in the procurement of non-heart-beating organ donors. This report had been requested in May 1997 by the Department of Health and Human Services (DHHS). We will here describe the genesis of the IOM report, the medical and moral concerns that led the DHHS to sponsor it, the process of producing it, and its conclusions. The analyses, findings, and recommendations of the report are also reviewed, in particular the central issues that led to suggestions for policy changes.     

Principlism and its alleged competitors.

Principles that provide general normative frameworks in bioethics have been criticized since the late 1980s, when several different methods and types of moral philosophy began to be proposed as alternatives or substitutes. Several accounts have emerged in recent years, including: (1) Impartial Rule Theory (supported in this issue by K. Danner Clouser), (2) Casuistry (supported in this issue by Albert Jonsen), and (3) Virtue Ethics (supported in this issue by Edmund D. Pellegrino). Although often presented as rival methods or theories, these approaches are consistent with and should not be considered adversaries of a principle-based account.     

The historical foundations of the research-practice distinction in bioethics

The distinction between clinical research and clinical practice directs how we partition medicine and biomedical science. Reasons for a sharp distinction date historically to the work of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research, especially to its analysis of the “boundaries” between research and practice in the Belmont Report (1978). Belmont presents a segregation model of the research-practice distinction, according to which research and practice form conceptually exclusive sets of activities and interventions. This model is still the standard in federal regulations today. However, the Commission’s deliberations and conclusions about the boundaries are more complicated, nuanced, and instructive than has generally been appreciated. The National Commission did not conclude that practice needs no oversight comparable to the regulation of research. It debated the matter and inclined to the view that the oversight of practice needed to be upgraded, though the Commission stopped short of proposing new regulations for its oversight, largely for prudential political reasons.     

Autonomy in chimpanzees

Literature on the mental capacities and cognitive mechanisms of the great apes has been silent about whether they can act autonomously. This paper provides a philosophical theory of autonomy supported by psychological studies of the cognitive mechanisms that underlie chimpanzee behavior to argue that chimpanzees can act autonomously even though their psychological mechanisms differ from those of humans. Chimpanzees satisfy the two basic conditions of autonomy: (1) liberty (the absence of controlling influences) and (2) agency (self-initiated intentional action), each of which is specified here in terms of conditions of understanding, intention, and self-control. In this account, chimpanzees make knowledge-based choices reflecting a richly information-based and socially sophisticated understanding of the world. Finally, two major theories of autonomy (Kantian theory and two-level theory) are rejected as too narrow to adequately address these issues, necessitating the modifications made in the present approach.     

Efficacy Beliefs in Coach–Athlete Dyads: Prospective Relationships Using Actor–Partner Interdependence Models

The overall purpose of the study was to investigate prospective actor and partner effects (cf. Kenny, Kashy, & Cook, 2006 ) of interpersonal efficacy beliefs in relation to relationship commitment, satisfaction, and effort within coach–athlete dyads. Fifty youth tennis players (mean age = 15.52 years, SD = 1.45) and their coaches (mean age = 40.17 years, SD = 13.71) provided data related to their self‐efficacy, other‐efficacy, and relation‐inferred self‐efficacy (RISE) beliefs mid‐way through the competitive season. Three months later, participants provided data regarding personal effort, as well as relationship commitment and satisfaction. Actor–partner interdependence model analyses revealed positive actor effects for self‐efficacy in relation to effort, and for other‐efficacy in relation to commitment, effort, and satisfaction. Partner effects for other‐efficacy were found in relation to relationship commitment and effort. Finally, actor and partner effects were also evident for RISE beliefs; however, these relationships were moderated by the individual's role (i.e. athlete or coach), such that the direction of actor and partner effects differed for athletes and coaches. Implications for fostering effective coach–athlete relationships are discussed. Cette recherche avait pour objectif général l’étude des retombées éventuelles sur l’acteur et son partenaire (Cf.: Kenny, Kashy & Cook, 2006 ) des croyances en l’efficience interpersonnelle en relation avec l’implication, la satisfaction et l’effort au sein de la dyade entraîneur‐athlète. Cinquante jeunes joueurs de tennis (âge moyen = 15,52; σ= 1,45) et leurs entraîneurs (âge moyen = 40,17; σ= 13,71) ont fourni des données relatives à leurs représentations concernant l’auto‐efficience, l’efficience d’autrui et l’auto‐efficience émanant de la relation (RISE), cela au milieu de la période des compétitions. Trois mois plus tard, les sujets ont donné des informations se rapportant à leur effort personnel, leur implication relationnelle et leur satisfaction. Les analyses relevant du modèle de l’interdépendance acteur‐partenaire ont révélé des conséquences positives pour l’acteur en ce qui concerne l’auto‐efficience en relation avec l’effort et l’efficience d’autrui en relation avec l’implication, l’effort et la satisfaction. Les effets du partenaire pour l’efficacité d’autrui étaient en relation avec l’effort et l’implication relationnelle. Finalement, les effets du partenaire et de l’acteur apparaissaient également pour les croyances RISE; ces relations étaient toutefois modulées par les rôles individuels (athlète ou entraîneur), de telle sorte que le sens des effets acteur‐partenaire différait pour les athlètes et les entraîneurs. On réfléchit aux applications permettant d’améliorer l’efficacité des relations athlète‐entraîneur.     

Investigating social functioning after early mild TBI: the quality of parent–child interactions

The young brain is particularly vulnerable to injury due to inherent physiological and developmental factors, and even mild forms of traumatic brain injury (mTBI) can sometimes result in cognitive and behavioural difficulties. Despite the high prevalence of paediatric mTBI, little is known of its impact on children's social functioning. Parent–child relationships represent the centre of young children's social environments and are therefore ideal contexts for studying the potential effects of mTBI on children's social functioning. The aim of this study was to assess the quality of parent–child interactions after mTBI using observational assessment methods and parental report. The sample included 130 children (18–60 months at recruitment) divided into three groups: children with uncomplicated mTBI (n = 47), children with orthopaedic injury (OI, n = 27), and non‐injured children (NI, n = 56). The quality of parent–child interactions was assessed 6 months post‐injury using the Mutually Responsive Orientation (MRO) scale, an observational measure which focuses on the dyadic nature of parent–child exchanges, and the Parental Stress Index questionnaire (Parent‐Child Dysfunctional Interaction (PCDI) domain). Significant differences with medium effect sizes were found between the mTBI group and the NI group on the MRO, but not between the OI group and the other two groups. PCDI scores did not differ across groups, suggesting that observational measures may be more sensitive to changes in parent–child interactions after TBI. The current findings have implications for children's post‐injury social development and highlight the importance of monitoring social outcomes even after minor head injuries.     

Reperfusion of Specific Brain Regions by Raising Blood Pressure Restores Selective Language Functions in Subacute Stroke

We report a series of six single subject studies examining the effects of pharmacological blood pressure elevation on regional brain perfusion and language function. Previous reports indicate that hypoperfusion of specific brain regions, as delineated by magnetic resonance perfusion weighted imaging (PWI), is associated with disruption of selective lexical functions. On this basis, we hypothesized that reperfusion of the same regions, in the absence of infarct in that region, would restore the associated lexical function. We present five patients with impaired lexical-semantics associated with poor perfusion, but not infarction, of Brodmann's area 22 (BA 22), and one patient with impaired lexical-semantics and a superimposed deficit in retrieving the phonological representations of words, associated with poor perfusion Brodmann's area 37 (BA 37) as well as BA 22. Each patient was treated with induced blood pressure elevation to increase perfusion of the ischemic and dysfunctional tissue. Daily testing of naming and comprehension, with stimulus sets matched for frequency, familiarity, and length, showed improved lexical-semantics in the patients who showed reperfusion of BA 22 and improved oral naming (but not lexical-semantics) in the patient who showed reperfusion of BA 37. These cases illustrate that loss of function with hypoperfusion of a circumscribed area of the brain, and recovery of the same function with improved perfusion of that brain region, can reveal brain/language relationships prior to reorganization after brain injury.     

Testing the effects of an expectancy-based intervention among adolescents: Can placebos be used to enhance physical health?

It has been suggested that the well-known health benefits associated with exercise can be explained by a placebo effect, and that greater effort should be given to convince people that their current behaviors have desirable health consequences. The overall purpose of this study was to test the efficacy of this "mind-set matters" hypothesis through the use of an expectancy-based intervention with adolescents. The study involved a four week randomized controlled trial with 348 Grade 9 adolescents (M (age)?=?14.07 yrs, SD?=?0.30), from four high schools, taking part in either a placebo-intervention condition (n?=?188) or a control condition (n?=?160). Participants in the placebo-intervention condition were informed that what they are already doing in school physical education lessons fulfills current recommendations for an active lifestyle. Participants in the control condition were not given this information. Four weeks after the intervention, adolescents in the placebo-intervention condition did not demonstrate significant changes in physiological health-related measures (diet, weight, body mass index, percentage body fat, heart rate, mean arterial pressure). The findings question the external validity of the "mind-set matters" hypothesis with adolescents, and suggest that simply encouraging adolescents to believe that they are healthy may not enable them to respond with improved indicators of physical health.     

Age-related differences in inhibitory control in the early school years

The transition to school is associated with a greater requirement to inhibit irrelevant or inappropriate thought and behavior in order to concentrate on effective learning and to interact successfully with peers. Current knowledge of inhibitory control development in the early school years is limited due to a lack of normative data from age-appropriate, sensitive measures. In this study, three pictorial versions of the Stroop task were administered to investigate inhibitory control development in early school-aged children. Age-related trajectories of inhibition and effects of gender were examined in 80 children (42 boys) aged 5 to 8 years. All children were assessed with the Cognitive Assessment System Expressive Attention subtest (Big-Small Stroop), Fruit Stroop, and Boy-Girl Stroop. The Big-Small Stroop revealed substantial age-related improvement in inhibition from 5 to 7 years with a levelling of performance at 8 years of age, while the Fruit Stroop and Boy-Girl Stroop demonstrated clear but nonsignificant age trends. In particular, older children committed fewer errors and corrected their errors more frequently than younger children. Performance on all Stroop tasks correlated significantly, providing evidence that they tap similar cognitive abilities. Some gender differences were found. This study indicates that inhibitory skills develop rapidly in the early school years and suggests that error awareness may be a useful indicator of the development of cognitive inhibition for this age group.