V Peralta

..It is concluded that classification of psychotic disorders is highly dependent upon the time frame considered to assess symptoms and that dimensional classifications do have higher predictive power than categorical ones...

..The phenotype of psychotic disorders is presumed to be heterogeneous, but the best way to describe this heterogeneity remains unclear...

..This study examined NSS in first-episode psychotic patients with respect to their factor structure and associations with risk factors, pre-morbid characteristics, psychopathology and spontaneous extrapyramidal syndromes...

..The NINDS criteria for probable SP, i.e., presence of any two of the three core parkinsonian signs, seem to be the most suitable for clinical and research purposes...

..Using a polydiagnostic approach we examined the relationship between familial liability and alternative schizophrenia phenotypes...

..It is concluded that caution is warranted when using the three-factor model of schizophrenic symptoms as it may not be stable at different phases of the illness...

..When definitions are more restrictive as in Leonhard's system, catatonia seems to be better accommodated as a "third psychosis", i.e. described by the concept of cycloid psychosis...

..The existence of putative subtypes is also likely, and the differentiation between affective and nonaffective subtypes has received some support...

..The deficit syndrome may be diagnosed irrespective of the specific categories of psychotic disorders...

..The aim of this study is to further examine this issue by analyzing a large sample of psychotic probands and their first-degree relatives...

..Having a history of OCs does not convey a vulnerability for developing drug-induced neurological signs in the short term...

..Future studies should examine putative subtypes of the disorder in relation to etiological, pathophysiological and clinical variables...

..These results make clear the problems inherent in drawing well-defined boundaries between psychotic disorders...

..Despite the lack of consistent empirical support, modern diagnostic criteria of schizophrenia give particular emphasis to Schneider's first-rank symptoms (FRSs)...

..A hierarchical approach for organizing the complex dimensional structure of schizophrenic symptoms is proposed...

..We aimed at examining the nature of such a relationship in a mixed sample of psychotic disorders by using a dimensional and categorical approach to psychopathology...

..The study's aim was to examine the prevalence and correlates of neuromotor abnormalities in a sample of neuroleptic-naive psychotic patients...

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..The subscale composition of the SAPS and SANS was not supported...

..To examine the prevalence, psychometric validity and response to antipsychotic drugs of DSM-IV catatonia signs and criteria in patients with a first-episode psychotic disorder...

..The study examined the primary versus secondary character of negative symptoms in a group of first-episode, neuroleptic-naive psychotic patients before and after they started neuroleptic treatment...

..It is hypothesized that the existence of a differential dopaminergic dysfunction in the nigroestriatal circuitry is responsible for the generation of those motor domains that improve and worsen with antipsychotic drugs...

..It is concluded that the factor structure of motor disorders and its clinical correlates are rather more complex than generally acknowledged...

..In conclusion, patients displaying three or more classical motor signs may be diagnosed with confidence as suffering from a catatonic syndrome...

..To characterize the affective dimensions of psychopathology in patients with a nonaffective psychosis and to examine their validity against a number of external variables...

..This study aimed at examining the influence of premorbid social networks on the duration of untreated psychotic illness...

..There was a statistically significant relationships between the frontal signs and the cognitive deficits (mean shared variance was 22%) which persisted after correcting for the influence of age, education, and duration of illness...

..These findings suggest the existence of a relationship between cognitive decline in visuomotor and delayed visual memory functions and the length of schizophrenic illness...

..In addition, when insight was assessed through a multidimensional approach, a variety of relationships with the schizophrenic dimensions were found...

..Many patients suffering from psychosis are unaware of their disorder and symptoms...

..No differential improvements were found in social functioning, verbal fluency, non-verbal domains of memory or visuo-motor abilities...

..The findings have implications for the design of future studies and for the hierarchical conceptualization of psychopathological dimensions...

..Many significant relationships between subjective experiences and cognitive disturbances persisted after controlling the influence of age, gender, education, lack of insight, neuroleptic doses, and biperidene doses...

..Thought Disorder dimensions would be potential markers for biological, neurophysiological, and neuropsychological studies of schizophrenic disorder...

..The goal of the present study was to analyze the relationship between dimensions of personality and cognitive performance in individuals with psychosis...

..This is the first report of such an association, and it is suggested that both the psychotic disorder and the mega cisterna magna may be the expression of a single underlying neurodevelopment abnormality...

..These results are consistent with a unitary and dimensional construct of schizophrenia with no clear "points of rarity" at its boundaries, thus supporting the continuum hypothesis of the psychotic illness...

..However, few studies have addressed the dilemma of hierarchy within symptoms or dimensions in psychosis...

..It has been reported that lack of insight is significantly associated with cognitive disturbance in schizophrenia. This study examines the longitudinal relationships between insight dimensions and cognitive performance in psychosis...

..NSS were highly efficient predictors of the presence of severe cognitive impairment related to psychosis. However, their ability to discriminate between individuals with psychosis and normal controls was modest...

..These new methods of assessment merging created by the shift toward a dimensional paradigm will be applied in the forthcoming new diagnostic criteria and may allow for a phenome-wide scanning for psychosis...

..Finally, the known limitations of the Kraepelinian dichotomy are summarized, and future problems related to the inclusion of the new dimensional assessment methods in the next psychiatric classifications are described...

..Cognitive impairment in schizophrenia-spectrum disorders is highly prevalent and notably influences functional outcomes...

..To evaluate the presence of psychiatric alterations in patients with fecal incontinence...

..The aim of this study was to examine the relationships between personality and psychopathology in a 'first-episode psychosis' sample using a dimensional approach...

..Most diagnostic criteria are still influenced to a large extent by historical and consensus-based perspectives...

..The lack of a taxonic structure with symptomatological domains of psychosis suggested the existence of a dimensional solution for schizophrenia symptomatology within psychoses...

..The use of a polydiagnostic approach on the one hand, and a multidimensional approach on the other (the polydiagnostic-multidimensional paradigm), seems to be a promising strategy to better understand the heterogeneity of schizophrenia...

..Cycloid psychosis seems to be an heterogeneous condition in that affective and non-affective subgroups can be differentiated...

..07). This tendency was not observed in the healthy offspring. Using a multidimensional symptom approach to the diagnosis, the association was confirmed in psychotic patients showing the depressive symptom-dimension (P = 0.02)...