Mental and Motor Switching in Parkinson's Disease

Switching difficulties in Parkinson's disease (PD) are expressed in both mental and motor tasks. The authors of the present study investigated whether those deficits coexist in the same patient and are positively correlated. They tested 8 nondemented PD patients and 6 age-matched control participants by using the modified Wisconsin Card Sorting Test and a motor switching paradigm that is based on the task of reaching toward visual targets, the location of which could unexpectedly be altered within the reaction time. In both mental and motor tasks, patients performed significantly worse than controls. There were no significant correlations between the two types of pathology in individual patients. Mental and motor switching deteriorate in PD patients, but the deficits are not necessarily of parallel severity.

basal ganglia     

Objective Similarity and Mental Representation

The claim that similarity plays a role in representation has been philosophically discredited. Psychologists, however, routinely analyse the success of mental representations for guiding behaviour in terms of a similarity between representation and the world. I provide a foundation for this practice by developing a philosophically responsible account of the relationship between similarity and representation in natural systems. I analyse similarity in terms of the existence of a suitable homomorphism between two structures. The key insight is that by restricting attention to only those homomorphisms induced by causal processes, we can solve two philosophical problems with a single assumption. First, causal structure provides an adequate source for the bias required to ensure the similarity relation is non-trivial; second, it provides an adequate source for the directionality required to move from similarity to representation. I defend this account against objections by Goodman and van Fraassen and demonstrate that it is indeed the account of similarity's role in representation assumed by psychological practice.     

Technology and Epistemic Possibility

My aim in this paper is to give a philosophical analysis of the relationship between contingently available technology and the knowledge that it makes possible. My concern is with what specific subjects can know in practice, given their particular conditions, especially available technology, rather than what can be known “in principle” by a hypothetical entity like Laplace’s Demon. The argument has two parts. In the first, I’ll construct a novel account of epistemic possibility that incorporates two pragmatic conditions: responsibility and practicability. For example, whether subjects can gain knowledge depends in some circumstances on whether they have the capability of gathering relevant evidence. In turn, the possibility of undertaking such investigative activities depends in part on factors like ethical constraints, economical realities, and available technology. In the second part of the paper, I’ll introduce “technological possibility” to analyze the set of actions made possible by available technology. To help motivate the problem and later test my proposal, I’ll focus on a specific historical case, one of the earliest uses of digital electronic computers in a scientific investigation. I conclude that the epistemic possibility of gaining access to scientific knowledge about certain subjects depends (in some cases) on the technological possibility for making responsible investigations.     

Child Wellness and Social Inclusion: Values for Action

Participatory Action Research (PAR) with children and youth is at the intersection of child wellness and social inclusion. Exclusion and marginalization detract from personal and collective health. Inclusion, on the contrary, contributes to wellness. Hence, we should study inclusion and exclusion in the overall context of child wellness. This special issue offers a wealth of methodologies and lessons for fostering inclusion of young people through PAR. In an effort to synthesize my concerns with child wellness, inclusion, and the scholarly work of this special issue, this paper will (a) articulate the values underpinning the philosophy of social inclusion and child wellness, (b) suggest roles and responsibilities for putting these values into action, and (c) integrate the contributions of this special issue into the emerging framework for social inclusion and child wellness.     

The Influence of Acculturation and Enculturation on Mexican American High School Students' Decision to Apply to College

This study examined the influence of acculturation, enculturation, parental education level, financial concerns, and gender on 106 Mexican American high school students' decisions to apply to college. Results indicated that acculturation and female gender were significant predictors. Implications for interventions with Latino high school students are discussed. Este estudio examinó la influencia de la aculturación, la enculturación, el nivel de educación de los padres, las preocupaciones financieras y el sexo del sujeto sobre la decisión de 106 estudiantes de secundaria mejicanos‐americanos de solicitar acceso a estudios universitarios. Los resultados indicaron que la aculturación y el sexo femenino mostraron una capacidad de predición significativa. Se discuten las implicaciones para intervenciones con estudiantes de secundaria latinos.     

Novice teachers’ experience of teaching: a dynamic aspect of burnout

This article addresses the question of how novice teachers perceive their work environment and how their perceptions affect burnout. Data were obtained from a questionnaire administered to novice teachers at the beginning and at the end of the school year. It was found that (1) novice teachers experienced high levels of burnout as early as the beginning of their first year of teaching; (2) novice teachers’ perception of their work environment at the beginning and at the end of their first year significantly and meaningfully explained their sense burnout; (3) three variables contribute to predicting burnout at the beginning and at the end of the first year of teaching: (a) lack of appreciation and professional recognition from students; (b) lack of appreciation and professional recognition from the public, and (c) lack of collaborative and supportive ambience.     

Severity and cost of unsafe abortion complications treated in Nigerian hospitals

CONTEXT: Each year, thousands of Nigerian women have unintended pregnancies that end in illegal abortion. Many such procedures occur under unsafe conditions, contributing to maternal morbidity and mortality. METHODS: In a 2002-2003 survey of women and their providers in 33 hospitals in eight states across Nigeria, 2,093 patients were identified as being treated for complications of abortion or miscarriage or seeking an abortion. Women's abortion experiences and the health consequences and associated costs were examined through bivariate analysis. Multivariate analysis was used to examine the characteristics of women by type of pregnancy loss and to compare characteristics among three groups of women who had induced abortions in differing circumstances. RESULTS: Among women admitted for abortion-related reasons, 36% had attempted to end the pregnancy before coming to the hospital (including 24% with and 12% without serious complications), 33% obtained an induced abortion at the facility (not withstanding the country's restrictive law) without having made a prior abortion attempt and 32% were treated for complications from a miscarriage. Of women with serious complications, 24% had sepsis, 21% pelvic infection and 11% instrumental injury; 22% required blood transfusion and 10% needed abdominal surgery. The women in this group were poorer and later in gestation than those who sought abortions directly from hospitals. They paid more for treatment (about 13,900 naira) than those who went directly to the hospital for an abortion (3,800 naira) or those treated for miscarriage (5,100 naira). CONCLUSIONS: Policy and program interventions are needed to improve access to contraceptive services and postabortion care in order to reduce abortion-related morbidity and mortality.