Abstract:
INTRODUCTION:Separable, but positively correlated, factors emerge from analyses of cognitive test data in schizophrenia and control samples (eg, verbal memory and processing speed) and these factors guide data reduction. Additionally, data support a hierarchical model of cognitive performance, in which these correlations reflect the influence of a higher-order factor, referred to as "g." We tested these findings in large, carefully screened samples of people with schizophrenia (n = 496), their unaffected siblings (n = 504), and controls (n = 823). Furthermore, we tested the hypothesis that cognitive performance in schizophrenia is more generalized across domains than among siblings and controls. METHOD:A combination of exploratory and confirmatory factor analyses (EFA and CFA) and multiple groups CFA (MCFA) was used. RESULTS:EFA yielded factors for verbal memory, visual memory, processing speed, working memory span, nback performance, and card sorting. The solution was consistent across groups, in terms of the factor assignments of individual cognitive variables and the magnitude of loadings. Method variance may have contributed to the card sorting, visual memory, and nback factors. CFA indicated that the hierarchical model, incorporating a "g" factor, was a good fit for data from all groups. MCFA suggested that this hierarchical structure was fully invariant for controls and siblings. While the variable/factor loadings for the schizophrenia group also were invariant with comparison groups, factor/"g" loadings were higher in schizophrenia, as were correlations among factor-based composite scores. CONCLUSIONS:Cognitive variables sort into domains consistently in schizophrenia, unaffected siblings, and controls. However, performance in schizophrenia is more generalized and less domain specific.
journal_name
Schizophr Bulljournal_title
Schizophrenia bulletinauthors
Dickinson D,Goldberg TE,Gold JM,Elvevåg B,Weinberger DRdoi
10.1093/schbul/sbq018subject
Has Abstractpub_date
2011-11-01 00:00:00pages
1157-67issue
6eissn
0586-7614issn
1745-1701pii
sbq018journal_volume
37pub_type
杂志文章abstract::The clinical importance of subtypes based on enduring deficit or negative symptoms was examined in a group of schizophrenic patients who were assessed twice over a 1-year period. Subgroups of patients with high levels of enduring negative or deficit symptoms, based on the Scale for the Assessment of Negative Symptoms ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/17.4.565
更新日期:1991-01-01 00:00:00
abstract::This study examined the relation between maternal prepregnant body mass index (BMI) and development of schizophrenia and schizophrenia spectrum disorders in adult offspring from the Prenatal Determinants of Schizophrenia Study. The study drew on a previously studied cohort of births occurring between 1959 and 1967 to ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a033452
更新日期:2000-01-01 00:00:00
abstract::To better characterize hippocampal pathophysiology in schizophrenia, we conducted a longitudinal study evaluating hippocampal functional connectivity during resting state, using seeds prescribed in its anterior and posterior regions. We enrolled 34 unmedicated patients with schizophrenia or schizoaffective disorder (S...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbv228
更新日期:2016-07-01 00:00:00
abstract::The variability in the response to antipsychotic medication in schizophrenia may reflect between-patient differences in neurobiology. Recent cross-sectional neuroimaging studies suggest that a poorer therapeutic response is associated with relatively normal striatal dopamine synthesis capacity but elevated anterior ci...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbaa128
更新日期:2020-09-10 00:00:00
abstract::Despite NIMH efforts to facilitate the study of women and minorities in federally funded schizophrenia research, there is a significant lack of information about race differences in brain morphology and neuropsychological function in schizophrenia. A review of three major psychiatric journals between 1994 and 1996 rev...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a033358
更新日期:1999-01-01 00:00:00
abstract::Catechol-O-methyl transferase (COMT) is a catabolic enzyme involved in the degradation of a number of bioactive molecules; of principal interest to psychiatry, these include dopamine. The enzyme is encoded by the COMT gene. COMT is located (along with 47 other genes) in a fragment of chromosome 22q11 which when delete...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbm019
更新日期:2007-05-01 00:00:00
abstract::Given the rising costs of health care and the decrease in public expenditures on mental health care, policy-makers and program managers must identify cost-effective approaches for treating severely mentally ill patients. During the last year, there have been two major cost-effectiveness studies implemented in Californ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/17.3.461
更新日期:1991-01-01 00:00:00
abstract::A selective review of the negative symptoms of schizophrenia is an appropriate article to result from the festschrift honoring William T. Carpenter Jr, as he has made substantial contributions in this area. This review assesses progress in 3 areas in which he has been an important investigator: the distinction between...
journal_title:Schizophrenia bulletin
pub_type:
doi:10.1093/schbul/sbt158
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:In light of the evidence for brain white matter (WM) abnormalities in schizophrenia, study of normal WM maturation in adolescence may provide critical insights relevant to the neurodevelopment of the disorder. Voxel-wise diffusion tensor imaging (DTI) studies have consistently demonstrated increases in fract...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,meta分析
doi:10.1093/schbul/sbs054
更新日期:2012-11-01 00:00:00
abstract::The goals of the project Social Cognition and Functioning in Schizophrenia (SCAF) were to (1) identify the domains to target from social neuroscience for translation to clinical schizophrenia research, (2) identify the paradigms that represent these domains for which the neural substrates are well documented, (3) adap...
journal_title:Schizophrenia bulletin
pub_type:
doi:10.1093/schbul/sbt128
更新日期:2013-11-01 00:00:00
abstract::Evidence from psychophysiological and behavioral investigations of lateralization in psychosis separates two clinical syndromes. A speculative model is offered in which the syndromes approximate the clinical features of paranoid compared with nonparanoid patients in investigations in which the groups have been disting...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/7.4.662
更新日期:1981-01-01 00:00:00
abstract::Phenomenological research suggests that pure manic and depressive states are less common than mixtures of the two and that the two poles of mood are characterized by opposite ways of experiencing time. In mania, the subjective experience of time is sped up and in depression it is slowed down, perhaps reflecting differ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbl061
更新日期:2007-01-01 00:00:00
abstract::Antipsychotic medications are viewed as cornerstones for both the short-term and long-term treatment of schizophrenia. However, evidence on long-term (10 or more years) efficacy of antipsychotics is mixed. Double-blind discontinuation studies indicate significantly more relapses in unmedicated schizophrenia patients i...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbt034
更新日期:2013-09-01 00:00:00
abstract::The deficit syndrome is thought to characterize a pathophysiologically distinct subgroup of patients with schizophrenia. Supporting this notion, prior research examining the neuropsychological correlates of the deficit syndrome has suggested the presence of a differential impairment in frontal and parietal functions. ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,meta分析,评审
doi:10.1093/schbul/sbl066
更新日期:2007-09-01 00:00:00
abstract::Recent studies provide considerable evidence that schizophrenia and bipolar disorder may share overlapping etiologic determinants. Identifying disease-related genetic effects is a major focus in schizophrenia and bipolar disorder research, with implications for clarifying diagnosis and developing specific treatments f...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbn055
更新日期:2008-07-01 00:00:00
abstract::Cognitive impairment associated with schizophrenia (CIAS) includes neuropsychological deficits in attention, working memory, verbal learning, and problem solving. These deficits have been shown to be linked to impairment in functional status (eg, social behavior, work performance, and activities of daily living) among...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbl004
更新日期:2006-10-01 00:00:00
abstract:Background:Delta band (1-4 Hz) neuronal responses support the precision and stability of auditory processing, and a deficit in delta band synchrony may be relevant to auditory domain symptoms in schizophrenia patients. Methods:Delta band synchronization elicited by a 2.5 Hz auditory steady state response (ASSR) paradi...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbx078
更新日期:2018-02-15 00:00:00
abstract::Persistent negative symptoms represent an alternative approach for assessing negative symptoms in the context of clinical trials. Persistent negative symptoms are designed to capture those symptoms that lead to functional impairment but are currently understudied and for which there are no currently available effectiv...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbl057
更新日期:2007-07-01 00:00:00
abstract::Visual illusions allow for strong tests of perceptual functioning. Perceptual impairments can produce superior task performance on certain tasks (i.e., more veridical perception), thereby avoiding generalized deficit confounds while tapping mechanisms that are largely outside of conscious control. Using a task based o...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbr055
更新日期:2011-07-01 00:00:00
abstract::Genetic variants conferring risk for schizophrenia (SCZ) have been extensively studied, but the role of posttranscriptional mechanisms in SCZ is not well studied. Here we performed the first genome-wide microRNA (miRNA) expression profiling in serum-derived exosome from 49 first-episode, drug-free SCZ patients and 46 ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sby191
更新日期:2019-10-24 00:00:00
abstract::Deluded people differ from nondeluded controls on attributional style questionnaires and probabilistic-reasoning and theory-of-mind (ToM) tasks. No study to date has examined the relations between these 3 reasoning anomalies in the same individuals so as to evaluate their functional independence and potentially inform...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbn069
更新日期:2010-03-01 00:00:00
abstract::Schizophrenia is a disorder of a neurodevelopmental origin manifested symptomatically after puberty. Structural neuroimaging studies show that neuroanatomical aberrations precede onset of symptoms, raising a question of whether schizophrenia can be prevented. Early treatment with atypical antipsychotics may reduce the...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbq040
更新日期:2011-11-01 00:00:00
abstract:BACKGROUND:Deficits in emotion processing are thought to underlie the key negative symptoms flat affect and anhedonia observed in psychotic disorders. This study investigated emotional experience and social behavior in the realm of daily life in a sample of patients with schizophrenia and schizoaffective disorder, stra...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbr137
更新日期:2013-01-01 00:00:00
abstract::The association between low birth weight and schizophrenia has been suggested by many studies. Small for gestational age (SGA) is a measure used as a proxy for intrauterine growth restriction. We aim to examine if children who are born SGA are at increased risk of developing schizophrenia and whether an association ma...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbs148
更新日期:2013-11-01 00:00:00
abstract::We examined neurocognitive correlates of three dimensions of schizotypy in 63 healthy first degree relatives of schizophrenia patients. Neurocognitive measures of attention, verbal memory, and prefrontal functioning were combined with self-report and interview measures of schizotypy. State-psychopathology (anxiety and...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a006946
更新日期:2002-01-01 00:00:00
abstract::North American outcome studies of schizophrenia conducted within the past quarter century are reviewed if their minimum average followup is 10 years and they meet at least some modern design criteria. Ten such investigations are described and summarized. Taken as a whole, they demonstrate that schizophrenia can be a c...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/14.4.515
更新日期:1988-01-01 00:00:00
abstract::Social networks of 35 mentally ill persons were studied in Lao villages. Mental illness was associated with a decrease in size of social networks, disproportionate reliance on family, and asymmetric instrumental exchange. Nonkin "sponsors" provided assistance to those alienated from or abandoned by relatives. For thos...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/7.1.125
更新日期:1981-01-01 00:00:00
abstract::Negative and positive symptoms were investigated in a sample of 72 young schizophrenic and depressed patients at followup approximately 1 1/2 years after hospital discharge. Flat affect, poverty of speech, and psychomotor retardation were included as negative symptoms, and delusions, hallucinations, and florid thought...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/10.3.371
更新日期:1984-01-01 00:00:00
abstract::Antipsychotics, cognitive behavioral therapy (CBT), and omega-3-fatty acids have been found superior to control conditions as regards prevention of psychosis in people at-risk of first-episode psychosis. However, no large-scale trial evaluating the differential efficacy of CBT and antipsychotics has been performed yet...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/schbul/sbr083
更新日期:2011-09-01 00:00:00
abstract::Patients with schizophrenia are often characterized as lacking insight or awareness into their illness and symptoms, yet despite considerable research, we still lack a full understanding of the factors involved in causing poor awareness. Within schizophrenia, there has been shown to be a fractionation across dimension...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbq100
更新日期:2011-01-01 00:00:00