Download Psychoses of the Schizophrenic Spectrum in Twins: A by Priv. Doz. Dr. Ernst Franzek, Univ.-Prof. Dr. Dr. h.c. PDF

By Priv. Doz. Dr. Ernst Franzek, Univ.-Prof. Dr. Dr. h.c. Helmut Beckmann (auth.)

Contradictory leads to schizophrenia learn are in most cases defined as being because of genetic heterogeneity and a number of issue heredity in courting to manifold environmental components. The e-book stories a quick evaluation of all proper dual experiences on schizophrenic psychoses and offers facts and case histories on a scientific dual research in line with a polydiagnostic strategy performed by way of independently operating psychiatrists. as well as the across the world utilized operational diagnostic structures of DSM-III-R and ICD 10 Leonhard’s subclassification of schizophrenic psychoses was once used. in the past this refined methodological process is exclusive on this planet. the information supply powerful facts that the spectrum of psychoses with schizophrenic and schizophrenia-like signs isn't a continuum of illnesses. a minimum of in Leonhard’s 3 significant teams of cycloid psychoses, unsystematic schizophrenias and systematic schizophrenias genetic, somatic and psycho-social elements play a very diverse etiological function. Cycloid psychoses and systematic schizophrenias are predominantly as a result of "environmental” elements. In unsystematic schizophrenias, notwithstanding, genetic predisposition is the most etiological issue and environmental components are subordinate.

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Extra info for Psychoses of the Schizophrenic Spectrum in Twins: A Discussion on the Nature — Nurture Debate in the Etiology of “Endogenous” Psychoses

Sample text

Concordance group Cl + C2 must be considered for a direct comparison with previous twin studies in schizophrenic research. The rates are 50% for monozygotic pairs and 20% for dizygotic pairs (age-adjusted: 55% and 23%). These values coincide with the average from the con- Concordance rates 53 cordance rates of all previous twin studies (monozygotic pairs 54%, dizygotic pairs 10%, without age adjustment).

Table 13 shows that there were slight age differences in the age at the onset between men and women within individual diagnostic Table 12. 3%) Demographic data of the subjects 47 Table 13. 2 SD) Other diagnoses of the schizophrenic spectrum (DSM-lII-RIICD 10) subgroups (cycloid psychoses and other spectrum psychoses apart from schizophrenia according to DSM-III-R1ICD 10). Social situation (school, occupation, marital status) Tables A6 and A7 in the Appendix show the social situation of the subjects at the time of the first hospitalization and at the time of the follow-up study.

1965). The authors reported in 1966 that in 11 discordant pairs the schizophrenic twin was the lighter twin at birth in 11 cases (between 15 g and 793 g) and was the second born in eight cases (pollin et al. 1966). Stabenau and Pollin (1967) found in earlier twin studies of discordant pairs that the ill partner was often smaller, weaker and lighter at birth and was often affected by asphyxia or other birth complications. In 1971 Mosher et at. reported that in 15 discordant pairs, the ill index-twin showed neurological irregularities significantly more often, had more difficulties during birth, and was the lighter twin in 12 cases.

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