Motor planning in Parkinson’s disease patients experiencing freezing of gait: The influence of cognitive load when approaching obstacles

Freezing of gait (FOG) in Parkinson’s disease (PD) is typically assumed to be a pure motor deficit, although it is important to consider how an abrupt loss of gait automaticity might be associated with an overloaded central resource capacity. If resource capacity limits are a factor underlying FOG, then obstacle crossing may be particularly sensitive to dual task effects in eliciting FOG. Participants performed a dual task (auditory digit monitoring) in order to increase cognitive load during obstacle crossing. Forty-two non-demented participants (14 PD patients with FOG, 13 PD who do not freeze, and 14 age-matched healthy control participants) were required to walk and step over a horizontal obstacle set at 15% of the participants’ height. Kinematic data were split into two phases of their approach: early (farthest away from the obstacle), and late (just prior to the obstacle). Interestingly, step length variability and step time variability increased when PD patients with FOG performed the dual task, but only in the late phase prior to the obstacle (i.e. when closest to the obstacle). Additionally, immediately after crossing, freezers landed the lead foot abnormally close to the obstacle regardless of dual task condition, and also contacted the obstacle more frequently (planning errors). Strength of the dual task effect was associated with low general cognitive status, declined executive function, and inappropriate spatial planning, but only in the PD-FOG group. This study is the first to demonstrate that cognitive load differentially impacts planning of the final steps needed to avoid an obstacle in PD patients with freezing, but not non-freezers or healthy controls, suggesting specific neural networks associated with FOG behaviours.     

Anglicans and Islam in East Africa: The Diocese of Zanzibar and the Universities’ Mission to Central Africa (1923–63)

This article examines the legacy of Godfrey Dale, who in 1923 published a Qur'an in Swahili, with the intention of letting people “know what the Qur?ān does say.” The work of his successors is explored. It discusses the proposals for work amongst Muslims submitted by lay and ordained members of the Diocese of Zanzibar for consideration at the 1944 Diocesan Conference, as the Diocese prepared for the situation after World War II. Finally, it examines the role of the Diocese with particular reference to Christian–Muslim relations as Tanganyika and Zanzibar prepared for Independence.     

Affaire Vincent L. : les maux de la fin

As called back it June 24th, Council of State in its press release, the Vincent L.’s case “raise scientific, ethical and human questions”. At first, to decide on the fate of this 38-year-old man, the administrative jurisdiction recovered from it in expert opinions asked to establish the existence or not of an unreasonable stubbornness. But the objectivity of the medical science cannot solve only this litigation where the outcome is the life or the death of a patient. That is why the court opened its doors to the ethical speech too. If in this case, the science could not exist without consciousness, if the legal word could not exist without the ethical word, it's because of the human dimension which fills this media and legal affair. So behind this patient's case, called now “the Vincent L.’s affair”, it's a question about the death, that of a young man in the incapacity to express its will. It's also a question of a family disagreement on the future of their son, brother, or husband. In this context, “politically and mediatically charged”, the administrative jurisdiction pronounced four times on the decision of the stop of Vincent L.’s treatment. The educational position of the French judges allowed to clear up statutory provisions of the Leonetti's act.     

Power,empowerment and surrender in the context of paediatric spiritual care

The dynamics of ‘surrender’ is here put in dialectic with the dynamics of ‘power’ observed in situation involving children and their caregivers in a paediatric hospital setting. Following a qualitative research method used in practical theology, three case studies are presented and then interpreted in the light of both social sciences and Christian theology/spirituality. In the power/surrender paradox, there will always be a need for discernment for each situation and each encounter if the caregiver wants to better care for the children and continue to acknowledge their contribution to the life experience and wisdom of adults. Power and surrender both need to be embraced in order to grow in a fruitful spiritual life.     

The effect of autonomous and controlled motives on eating dysregulation: Implications for individuals classified as underweight,overweight or obese

IntroductionControlled and autonomous motivational factors from self-determination theory have previously been highlighted as key factors in eating regulation. The present study examined controlled motives as an overarching motivational factor in eating dysregulation and examined its effects on dieting behaviour for those who are underweight, overweight or obese.ObjectiveTo examine whether the influence of controlled motives on dieting behaviour would be moderated by body mass index (BMI). Specifically, it was hypothesised that controlled motives would be associated with high levels of dieting behaviour in underweight individuals and low levels of dieting behaviour in individuals classified as overweight or obese.MethodOne hundred and thirty-seven participants completed the measures of height, weight, and motivation and intentions towards watching their diet and subsequently completed a measure of dieting behaviour two weeks later.ResultsModerated regression and simple slopes analyses provided support for the hypothesised effects at underweight, overweight, and obese range BMIs.ConclusionThe effect of controlled motives on dieting behaviour is dependent upon BMI and therefore varies across underweight, overweight, and obese individuals. The implications of controlled motives and external pressures to watch one's diet are discussed.     

When implicit fails: Explicit but not implicit attitudes predict choices of decided and undecided voters

IntroductionA recent study (Friese et al., 2012) involving two major political elections in the US and Germany reported that voting behavior was better predicted by explicit than implicit attitudes for both decided and undecided voters and that when voting behavior was predicted by implicit attitudes, the prediction was better for decided than undecided voters.ObjectiveWe conducted a comparable study for the 2012 French presidential election using voter volatility as a measure of voter decidedness, in order to test the generalizability of the findings of Friese et al. (2012).MethodParticipants’ voting intention, explicit and implicit attitudes towards the candidates Sarkozy and Hollande were collected during the 2 weeks separating the two rounds of the election.ResultsOur findings confirm that explicit attitudes outperform implicit attitudes when predicting voting choice, but not that the relationship between implicit attitudes and voting intention is moderated by voter decidedness.ConclusionFurther research is needed in order to test whether the moderation of implicit attitudes by voter decidedness is a robust finding or not.     

The impact of different sources of social support on academic performance: Intervening factors and mediated pathways in the case of master's thesis

IntroductionAcademic failure and dropout are pervasive challenges at all levels of the education system. Research so far pointed out different aspects of this large phenomenon. On the one hand, some scholars have argued that social support is a key factor to foster learning and persistence. On the other hand, some other scholars have rather highlighted the role of student motivation and engagement itself in improving performance on academic tasks. In this article, we tested theoretical models that combine the two approaches in a whole process.AimsWe aimed at clarifying (1) the specific contribution of several sources of perceived social support to academic performance, and (2) the mediation role of motivation and engagement in the relationships between perceived social support and performance.MethodThe sample consisted of 226 last year university students. Structural equation modeling analyses were used to test the hypothesized associations.ResultsStructural equation modeling analysis revealed that institutional and supervisor support were associated with motivation, which in turn predicted greater behavioral, cognitive and emotional engagement. Further, behavioral engagement was the unique contributor of academic performance at the master's thesis.ConclusionThe results clarify the specific contribution of different sources of perceived social support and underline the importance of the supervisor and the institution. They also underline the importance of considering different sources of perceived social support at the same time. Finally, theoretical assumptions concerning the mediational role of motivation were confirmed.     

Comfortable and safe spaces? Gender,sexuality and ‘race’ in night-time leisure spaces

This article aims to contribute to the fields of emotional geographies and geographies of sexualities by exploring the relationship between emotions and gender, sexuality, and ‘race’ in sexualised night-time leisure spaces. By drawing on ethnographic research conducted in Manchester's Gay Village, the article highlights the importance of taking into account intersections of social identities when exploring how people feel in certain spaces. It explores how relations of ‘othering’ work through emotions, in particular how people are othered through feelings of comfort and safety. Whilst these feelings are triggered by a particular reading of bodies and spaces, they also produce bodies and spaces that are gendered, sexualised, and racialised (and classed). The article offers a rethinking of comfort and safety as not just feelings individuals have but as being constitutive of sexual, gender, and racial subjectivities and spaces.     

Parental Support and Adolescent Motivation for Dieting: The Self-Determination Theory Perspective

This article focuses on parents’ role in overweight adolescents’ motivation to diet and successful weight loss. The study employed Self-Determination Theory (SDT) as the theoretical framework (Deci & Ryan, 2000, 2011). Ninety-nine participants (ages 20–30) who had been overweight during adolescence according to their Body Mass Index (BMI mean = 25, SD = 1.6), completed retrospective questionnaires about their motivation to diet and their parents’ behavior in the context of dieting. Findings from a structural equation modeling analysis suggested that participants who viewed their parents’ as more need-supportive demonstrated more autonomous motivation to diet, which, in turn, contributed to their successful weight loss. The findings highlight the importance of parental support of adolescents’ psychological needs in the quality of their motivation to diet. This is an important insight for parents and professionals who aim to encourage more constructive parent involvement in adolescents’ dieting and well-being.     

Intergroup Contact,Prejudicial Attitudes,and Policy Preferences: The Case of the U.S. Military’s “Don’t Ask,Don’t Tell” Policy

Data from 115,052 active United States military personnel were analyzed to explore links between contact with gay people and attitudes about repealing “Don’t Ask, Don’t Tell.” Results showed that prejudice against homosexuals significantly mediated the association between contact and supporting repeal of “Don’t Ask, Don’t Tell”; quality of contact in the military was a stronger predictor than other measures of contact. Quality and quantity of contact interacted: more contact quantity had opposing statistical effects on policy attitudes for people experiencing high versus low quality contact. Findings are discussed in terms of contact theory, the association between intergroup attitudes and policy preferences, and practical implications for situations in which groups’ access to new positions or roles is limited, and hence contact opportunities are rare.