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PubMed2000

Guardianship for the severely mentally ill.

The process of appointing a guardian in the mental health field is a complex and important one. The guardian's duty is to protect a patient who is incompetent in making his own decisions. The guardian's role can be to correct past mistakes made by the patient (i.e. loss of property), manage the patient's present affairs and prevent future undesirable consequences. Characteristics of patients who are in need of guardianship have not previously been studied in Israel. We examined the characteristics of 60 hospitalized patients for whom a guardian was appointed, comparing them with another group of patients. Variables relating to disease severity such as diagnosis, duration of illness and employment status contrasted the groups. We may tentatively conclude that patients in need of legal guardianship are more severely ill than other mentally ill.

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PubMed2006

[The process of deinstitutionalization in German State Mental Hospitals. Critical overview of empirical research studies].

The process of discharging previously long-term hospitalized patients from German state mental hospitals, and of transferring these patients to other forms of supported housing has meanwhile come to its end. Therefore, this paper presents an overview of the scientific evaluation of this process. By using clearly defined research methodological criteria, eight empirical studies from several German federal states are assessed focusing on the meaningfulness of their results. Because of the heterogeneity of the aims regarding contents of this transformation process, of the research methodological approaches, and of the characteristics of the assessed patient groups, only few general results could be identified. Chronically mentally ill patients (mostly suffering from schizophrenic disorders) who had been successfully discharged to the community were younger, and showed shorter periods of illness and hospitalization than control patients. After discharge they might have experienced positive changes of their objective and subjective quality of life and of their perceived needs of care. Referred to several other outcome domains, no homogeneous tendencies concerning clinically relevant improvement or deterioration were found. In particular, changes related to psychopathological symptoms and social competencies were generally small. However, mortality and re-hospitalization rates of de-hospitalized patients were considerably high, and ranged between 3-24 %, and 4-46 %, respectively. The assessed studies could not identify replicated predictors of successful de-hospitalization. Female sex and long-term last hospitalization seemed to be important for stable placement in forms of supported housing requiring a higher level of autonomy. From the generally unclear procedural quality of the German deinstitutionalization process, the authors deduce implications for the scientific evaluation of future projects of restructuring mental health care services. Besides the clear definition of empirically assessable aims which should be based on theoretical considerations, it is of utmost priority to guarantee high performance quality of research methodological standards.

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PubMed1999

Age-related deficits in generation and manipulation of mental images: I. The role of sensorimotor speed and working memory.

The authors investigated age-related slowing of information processing in mental imagery tasks. Eighty-five healthy adults (ages 18 to 77) performed a visual, sensorimotor, reaction-time task; a visual-perceptual choice reaction task; and 3 mental imagery tasks that varied in apparent difficulty and involved stimuli at 2 levels of graphic complexity. Age was associated with prolongation of response time across all tasks and both levels of stimulus complexity. Accuracy of response was adversely affected by increase in stimulus complexity in all tasks, whereas it was negatively related to age only on the tasks with substantial mental imagery requirements. Slowing of information processing and reduction in accuracy were mediated by declines in working memory but not by decrease of sensorimotor speed.

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PubMed1994

Brain potentials during mental arithmetic: effects of extensive practice and problem difficulty.

Recent behavioral investigations indicate that the processes underlying mental arithmetic change systematically with practice from deliberate, conscious calculation to automatic, direct retrieval of answers from memory [Bourne, L.E.Jr. and Rickard, T.C., Mental calculation: The development of a cognitive skill, Paper presented at the Interamerican Congress of Psychology, San Jose, Costa Rica, 1991: Psychol. Rev., 95 (1988) 492-527]. Results reviewed by Moscovitch and Winocur [In: The handbook of aging and cognition, Erlbaum, Hillsdale, NJ, 1992, pp. 315-372] suggest that consciously controlled processes are more dependent on frontal lobe function than are automatic processes. It is appropriate, therefore to determine whether transitions in the locus of primary brain activity occur with practice on mental calculation. In this experiment, we examine the relationship between characteristics of event-related brain potentials (ERPs) and mental arithmetic. Single-digit mental multiplication problems varying in difficulty (problem size) were used, and subjects were trained on these problems for four sessions. Problem-size and practice effects were reliably found in behavioral measures (RT). The ERP was characterized by a pronounced late positivity after task presentation followed by a slow wave, and a negativity during response indication. These components responded differentially to the practice and problem-size manipulations. Practice mainly affected topography of the amplitude of positivity and offset latency of slow wave, and problem-size mainly offset latency of slow wave and pre-response negativity. Fronto-central positivity diminished from session to session, and the focus of positivity centered finally at centro-parietal regions.(ABSTRACT TRUNCATED AT 250 WORDS)

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