Two kinds of cognitive deficit associated with chronic schizophrenia

1977 ◽  
Vol 7 (1) ◽  
pp. 171-173 ◽  
Author(s):  
C. D. Frith
Keyword(s):  
Feature Selection ◽  
Negative Symptoms ◽  
Cognitive Deficit ◽  
Chronic Schizophrenia ◽  
Positive Symptoms ◽  
Chronic Schizophrenic ◽  
Normal Degree ◽  
Schizophrenic Patients

SynopsisThe performance of 21 chronic schizophrenic patients was investigated on two tests of feature selection. It was found that patients with negative symptoms (muteness, withdrawal, etc.) were characterized by an extreme lack of persistence, but selected usual features; whereas patients with positive symptoms (hallucinations, delusions, etc.) had a normal degree of persistence, but selected unusual features.

Tardive Dyskinesia and Type II Schizophrenia

1992 ◽  
Vol 160 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Elizabeth J. B. Davis ◽  
Milind Borde ◽  
L. N. Sharma
Keyword(s):  
Cognitive Impairment ◽  
Negative Symptoms ◽  
Chronic Schizophrenia ◽  
Thought Disorder ◽  
Control Group ◽  
Positive Symptoms ◽  
Type Ii ◽  
Formal Thought Disorder ◽  
Schizophrenic Patients ◽  
Male Patients

Cognitive impairment, negative and positive symptoms, primitive release reflexes, and age/temporal disorientation were assessed in 20 male patients meeting the DSM–III–R criteria for chronic schizophrenia and Schooler & Kane's criteria for TD. The control group comprised 20 age-matched male chronic schizophrenic patients without TD. Significant associations were found between TD, cognitive impairment, some negative symptoms, and formal thought disorder. These associations were independent of other illness and treatment variables. The severity of TD correlated significantly with that of cognitive impairment.

Correlation of Negative Symptoms in Schizophrenia with Frontal Lobe Parameters on Magnetic Resonance Imaging

1991 ◽  
Vol 159 (1) ◽  
pp. 130-134 ◽  
Author(s):  
P. Williamson ◽  
D. Pelz ◽  
H. Merskey ◽  
S. Morrison ◽  
P. Conlon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Tardive Dyskinesia ◽  
Frontal Lobe ◽  
Negative Symptoms ◽  
Positive Symptoms ◽  
Resonance Imaging ◽  
Chronic Schizophrenic ◽  
Schizophrenic Patients

Among 24 chronic schizophrenic patients, the 10 with high ratings for negative symptoms had significantly higher left-frontal: temporal–cortical T2 ratios. This finding was unrelated to age, dose of medication, length of illness or handedness. No T1 or T2 changes were found to be associated with positive symptoms or tardive dyskinesia in the regions examined.

Changes in the Positive and Negative Symptoms of Schizophrenic In-patients in China

1991 ◽  
Vol 159 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Michael R. Phillips ◽  
Zuan Zhao ◽  
Xianzhang Xiong ◽  
Xiufang Cheng ◽  
Guirong Sun ◽  
...  
Keyword(s):  
Negative Symptoms ◽  
Psychiatric Hospitals ◽  
Chronic Schizophrenia ◽  
First Episode ◽  
Positive Symptoms ◽  
Positive Type ◽  
Duration Of Illness ◽  
Assessment And Treatment ◽  
Schizophrenic Patients ◽  
Positive And Negative Symptoms

Positive and negative symptoms at admission and discharge of 401 unselected schizophrenic patients from four psychiatric hospitals around China were studied. On admission, 58% of patients had prominent negative symptoms and the overall severity of negative symptoms was similar to that of positive symptoms; at discharge, negative symptoms were more prevalent and more severe. The severity of negative symptoms was not significantly correlated with duration of illness or with dosage of medication; 48% of first-episode, drug-naive patients had prominent negative symptoms on admission. Negative symptoms responded to standard neuroleptic treatment, but the improvement was less marked than that in positive symptoms (47% v. 80%). The proportion of patients classified as positive type, negative type, and mixed type schizophrenia altered dramatically with treatment. These findings highlight the importance of negative symptoms in the assessment and treatment of both acute and chronic schizophrenia.

scholarly journals The Effects of Recreation Therapy on the Habit of Smoking and Positive–Negative Symptoms Among Patients with Chronic Schizophrenia

2017 ◽  
Vol 44 (2) ◽  
pp. 31-35
Author(s):  
M. G. Pirbalouti ◽  
A. Shariat ◽  
A. Ghazanfari ◽  
Y. Sh. Naghani ◽  
N. G. Kamaliyeh
Keyword(s):  
Negative Symptoms ◽  
Psychiatric Care ◽  
Signs And Symptoms ◽  
Chronic Schizophrenia ◽  
Positive Symptoms ◽  
Psychiatric Condition ◽  
Recreation Therapy ◽  
Smoking Cigarette ◽  
Schizophrenic Patients ◽  
Experimental Group

AbstractSchizophrenia is a psychiatric condition that has detrimental outcomes on an individual’s thinking, understanding and feelings. However, it not only affects one’s actions and emotions, but also, and quite specifically, creates an avenue for such antisocial behavior as seclusion. Hence, it is important to highlight the necessary requirements for the recovery of schizophrenic patients and subsequently delve deeper into the signs and symptoms of schizophrenia itself, especially among patients who have been confined to psychiatric care for too long. The aim of this study was to determine the effects of recreation therapy on smoking as well as the positive-negative symptoms of schizophrenia among patients who have reached the chronic stage of this condition. Essentially, this was a semi-experimental study with one pretest and one posttest. 50 patients under psychiatric care, aged between 30 to 50 years, were selected and then equally divided into the control and experimental groups. The instruments for this research were the Anderson questionnaire and the smoking cigarette questionnaire, the latter being created by the researcher. Data were analyzed using descriptive and inferential statistics. To evaluate the hypothesis of research, this study relied on a covariance analysis. Based on the results, it can be said that there were significant (p ≤ 0.05) differences between the control and experimental groups related to smoking as well as the positive-negative symptoms of schizophrenia. It shows that 4 months of recreation therapy was able to decrease the prevalence of smoking (19.9%), in addition to the positive symptoms (18.3%) and negative symptoms (14.7%) of schizophrenia within the experimental group. It is hoped that the results of this study will encourage the use of recreation therapy as a practical and non-pharmacological form of treatment for patients with chronic schizophrenia.

ARE SOME TYPES OF PSYCHOTIC SYMPTOMS MORE RESPONSIVE TO COGNITIVE-BEHAVIOUR THERAPY?

2001 ◽  
Vol 29 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Nicholas Tarrier ◽  
Caroline Kinney ◽  
Ellis McCarthy ◽  
Anja Wittkowski ◽  
Lawrence Yusupoff ◽  
...  
Keyword(s):  
Cognitive Behaviour Therapy ◽  
Negative Symptoms ◽  
Controlled Trial ◽  
Chronic Schizophrenia ◽  
Routine Care ◽  
Psychotic Symptoms ◽  
Positive Symptoms ◽  
Behaviour Therapy ◽  
Cognitive Behaviour ◽  
Supportive Counselling

Results are presented from a randomized controlled trial indicating which psychotic symptoms respond to cognitive behaviour therapy. The aim of the study was to investigate whether different types of psychotic symptoms are more or less responsive to cognitive-behaviour therapy compared to treatment received by control groups. Seventy-two patients suffering from chronic schizophrenia who experienced persistent positive psychotic symptoms were assessed at baseline and randomized to either cognitive-behaviour therapy and routine care, supportive counselling and routine care, or routine care alone and were re-assessed after 3 months of treatment (post-treatment). Independent and blind assessment of outcome indicated delusions significantly improved with both cognitive behaviour therapy and supportive counselling compared to routine care. Hallucinations significantly decreased with cognitive-behaviour therapy compared to supportive counselling. There was no difference in the percentage change of hallucinations compared to delusions in patients treated by cognitive behaviour therapy. There was little change in measures of affective symptoms but there was no evidence that a reduction in positive symptoms was associated with an increase in depres sion. In fact, a reduction in positive symptoms was positively correlated with a reduction in depression. There were significant differences in the reductions in thought disorder and negative symptoms with an advantage of cognitive-behaviour therapy compared to routine care.

Cognitive Function in Schizophrenia: Association with Negative and Positive Symptoms

1996 ◽  
Vol 78 (1) ◽  
pp. 123-128 ◽  
Author(s):  
Ronald A. Capleton
Keyword(s):  
Cognitive Functioning ◽  
Negative Symptoms ◽  
Wisconsin Card Sort Test ◽  
Positive Symptoms ◽  
Word Fluency ◽  
Generation Task ◽  
Card Sort ◽  
Word Generation ◽  
Perseverative Errors ◽  
Schizophrenic Patients

20 schizophrenic patients were classified as having either predominantly negative ( n = 11) or predominantly positive symptoms ( n = 9), utilizing the Scale for the Assessment of Negative Symptoms and the Scale for the Assessment of Positive Symptoms. Cognitive functioning was evaluated in these participants and 10 non-patient controls using a word-fluency test and word-generation task. Finally, all participants were evaluated using the Coglab Card Sort Test, a computerized version of the Wisconsin Card Sort Test. The only reliable difference in performance among groups was on perseverative errors on the Coglab Card Sort Test Schizophrenic participants made significantly more perseverative errors than controls and those classified as having primarily negative symptoms made more perseverative errors than those classified as having predominantly positive symptoms. These findings confirm previous reports with respect to cognitive functioning of schizophrenic patients and are consistent with the hypotheses regarding frontal lobe dysfunction in schizophrenia. These data encourage research with larger samples.

Negative Symptoms at Discharge and Outcome in Schizophrenia

1995 ◽  
Vol 166 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Hai-Gwo Hwu ◽  
Happy Tan ◽  
Chu-Chang Chen ◽  
Ling-Ling Yeh
Keyword(s):  
Clinical Outcome ◽  
Social Functioning ◽  
Symptom Score ◽  
Negative Symptoms ◽  
Positive Symptom ◽  
Positive Symptoms ◽  
Symptom Scores ◽  
Schizophrenic Patients ◽  
Positive And Negative Symptoms

BackgroundThe clinical significance in schizophrenia of positive and negative symptoms at discharge was assessed.MethodOf schizophrenic patients fulfilling DSM–III criteria, 113 were recruited for this study. Personal, social and psychopathological data were collected and all cases were followed up at one and two years after discharge.ResultsThe presence of positive symptoms (64 cases), without concomitant negative symptoms, did not predict the follow-up social function and positive symptom score. Conversely, the presence of negative symptoms (31 cases) predicted worse social functioning (P < 0.05 to P < 0.005) and higher positive symptom scores (P < 0.01) at follow-up using MANOVA. Eighteen cases (15.9%) had neither positive nor negative symptoms and had the best clinical outcome.ConclusionsNegative, but not positive, symptoms assessed at discharge are an important predictor of poor outcome. In addition, negative symptoms may themselves expose a biological vulnerability to the presence of positive symptoms.

New dopaminergic and non-dopaminergic theories in schizophrenia and their therapeutic impact

1997 ◽  
Vol 9 (2) ◽  
pp. 64-67
Author(s):  
R.S. Kahn
Keyword(s):  
Cognitive Deficits ◽  
Negative Symptoms ◽  
Dopamine Neurons ◽  
Psychotic Symptoms ◽  
Positive Symptoms ◽  
The Core ◽  
Schizophrenic Patients ◽  
Core Symptoms ◽  
Influential Theory

The dopamine (DA) hypothesis of schizophrenia, postulating that schizophrenia is characterized by increased dopamine function, has been the most influential theory on the pathogenesis of schizophrenia. It has recently been revised based on the appreciation that the core symptoms of schizophrenia may not be the positive (psychotic) symptoms, but rather the negative symptoms and the cognitive deficits found in schizophrenic patients. This revision has prompted the hypothesis that schizophrenia is characterized by both decreased prefrontal dopamine activity (causing deficit symptoms) and increased dopamine activity in mesolimbic dopamine neurons (causing positive symptoms).Notwithstanding this revision of a role for dopamine in schizophrenia, it has become increasingly evident that dysfunction of other monoaminergic systems may be as important in contributing to the pathophysiology of schizophrenia. Specifically, the putative role of serotonin (5-hydroxytryptamine, 5-HT) in schizophrenia is gaining considerable attention. Several observations, such as the ability of the 5-HT antagonist, ritanserin, to alleviate schizophrenic symptoms and, when added to haloperidol (Haldol®), to decrease its extrapyramidal side-effects (EPS), have stimulated studies into a role of 5-HT in schizophrenia. The finding that clozapine (Leponex®), clinically superior to conventional neuroleptics, is a weak DA2 antagonist but a potent 5-HT1c and 5-HT2 antagonist has further stimulated 5-HT-related research in schizophrenia.

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