Biomedical subjects

Karl H Wiedl

Publications and source records attributed to Karl H Wiedl.

3 recordsLinked to original sources

PubMed2006

[Do the effects of inpatient vocational therapy and ergotherapy approaches differ in schizophrenic patients? Results of a controlled multicenter study of the german research network on schizophrenia].

For some decades, vocational therapy approaches have been an integral part of inpatient psychiatric treatment of patients with schizophrenia. Like most sociotherapeutic measures, they are largely hypothesis-based. So far, their effectiveness has been subjected to very little scientific scrutiny. The results of a multicenter study in which five vocational therapy models were compared with creativity-oriented ergotherapy in a prospective, randomized control group design are presented. Target criteria were job-relevant skills, psychopathology, general level of functioning, quality of life, self-efficacy, and speed of cognitive performance. 227 patients were enrolled in the study, which was carried out within the framework of the German Research Network on Schizophrenia funded by the German Federal Ministry for Education and Research (BMBF). Multicenter analyses in a pre-post comparison revealed only minimum differences between the experimental and the control group over a four-week intervention period. Job-oriented approaches cannot currently be assumed to be superior to creativity-oriented ergotherapy.

Adult↗

PubMed2004

Dynamic testing in schizophrenia: does training change the construct validity of a test?

Dynamic testing typically involves specific interventions for a test to assess the extent to which test performance can be modified, beyond level of baseline (static) performance. This study used a dynamic version of the Wisconsin Card Sorting Test (WCST) that is based on cognitive remediation techniques within a test-training-test procedure. From results of previous studies with schizophrenia patients, we concluded that the dynamic and static versions of the WCST should have different construct validity. This hypothesis was tested by examining the patterns of correlations with measures of executive functioning, secondary verbal memory, and verbal intelligence. Results demonstrated a specific construct validity of WCST dynamic (i.e., posttest) scores as an index of problem solving (Tower of Hanoi) and secondary verbal memory and learning (Auditory Verbal Learning Test), whereas the impact of general verbal capacity and selective attention (Verbal IQ, Stroop Test) was reduced. It is concluded that the construct validity of the test changes with dynamic administration and that this difference helps to explain why the dynamic version of the WCST predicts functional outcome better than the static version.

Cognition Disorders↗

PubMed2002

[The work personality profile: an instrument for the assessment of the work competence of psychiatric patients].

The "Work Personality Profile", which assesses via supervisor ratings the basic work competences of psychiatric patients on eleven scales, was translated and adapted for use in German psychiatric institutions. Test analysis of data of 58 patients, most of whom were schizophrenic, yielded good statistical indicators for most of the scales. Factor analyses indicated a structure of two to three components: Learning ability, social and interactional competence, and social adaptation and motivation. Test analyses yielded good coefficience for most of the scales. Further clinical application of the instrument thus seems to be promising. Recommendations for use of a short version are given.

Adult↗