scholarly journals IQ and mental disorder in young men

2005 ◽  
Vol 187 (5) ◽  
pp. 407-415 ◽  
Author(s):  
Erik Lykke Mortensen ◽  
Holger Jelling Sørensen ◽  
Hans Henrik Jensen ◽  
June Machover Reinisch ◽  
Sarnoff A. Mednick
Keyword(s):  
Mental Disorder ◽  
Test Scores ◽  
Psychotic Disorders ◽  
Mental Disease ◽  
Diagnostic Categories ◽  
Iq Test ◽  
The Mean ◽  
Iq Scores ◽  
Low Iq ◽  
The Relationship

BackgroundMost research investigating the relationship between IQ and risk of mental disorder has focused on schizophrenia.AimsTo illuminate the relationship between IQ test scores in early adulthood and various mental disorders.MethodFor 3289 men from the Copenhagen Perinatal Cohort, military IQ test scores and information on psychiatric hospitalisation were available. We identified 350 men in the Danish Psychiatric Central Register, and compared the mean IQ test scores of nine diagnostic categories with the mean scores of 2939 unregistered cohort controls.ResultsSchizophrenia and related disorders, other psychotic disorders, adjustment, personality, alcohol and substance-use-related disorders were significantly associated with low IQ scores, but this association remained significant for the four non-psychotic disorders only when adjusting for comorbid diagnoses. For most diagnostic categories, test scores were positively associated with the length of the interval between testing and first admission. ICD mood disorders as well as neuroses and related disorders were not significantly associated with low IQ scores.ConclusionsLow IQ may be a consequence of mental disease or a causal factor in psychotic and non-psychotic disorders.

Low IQ scores in schizophrenia: primary or secondary deficit?

2002 ◽  
Vol 14 (3) ◽  
pp. 106-110 ◽  
Author(s):  
M. van Beilen ◽  
F. Withaar ◽  
A. H. van Zomeren ◽  
R. van den Bosch
Keyword(s):  
Cognitive Functioning ◽  
Psychotic Disorders ◽  
Psychotic Episode ◽  
Prodromal Phase ◽  
Speed Of Information Processing ◽  
First Psychotic Episode ◽  
Iq Test ◽  
School Career ◽  
Iq Scores ◽  
Low Iq

Background:Schizophrenia is consistently associated with lower IQ compared to the IQ of control groups, or estimated premorbid IQ. It is not likely that the IQ scores deteriorate during the prodromal phase or first psychotic episode; they are already present before the onset of the prodromal phase and have been detected in childhood.Methods:We investigated cognitive functioning and IQ levels in a group of 36 patients with schizophrenia or other psychotic disorders.Results:The IQ scores in our sample were lower than average. The IQ showed a relation with attention, memory, speed of information processing and some aspects of executive functioning. However, when IQ scores were corrected for processing speed, they were no longer below average.Conclusions:These findings are important in considering the value of intelligence levels in schizophrenia. IQ scores should be judged in combination with cognitive functioning and school career to assess a patients capabilities in society. Cognitive functions and other variables might have a considerable influence on IQ scores. This rises the question of whether the low IQ scores are a primary or secondary deficit. Schizophrenia patients may have normal IQs, but could be less capable of making an IQ-test.

Comparison of the Luria-Nebraska Neuropsychological Battery—Children's Revision and the WISC—R with Learning Disabled Children

1987 ◽  
Vol 65 (3) ◽  
pp. 911-916 ◽  
Author(s):  
Steven I. Pfeiffer ◽  
Jack A. Naglieri ◽  
Daniel H. Tingstrom
Keyword(s):  
Test Scores ◽  
Learning Disabled ◽  
Intellectual Ability ◽  
Disabled Children ◽  
Neuropsychological Battery ◽  
Present Sample ◽  
The Mean ◽  
The Relationship

This investigation concerned the relationship between the Luria-Nebraska Neuropsychological Battery—Children's Revision and the WISC—R for a sample of 32 children identified as learning disabled. The children's mean age was 9 yr., 11 mo.; they were identified as learning disabled on the basis of ability (WISC—R)/achievement discrepancy test scores. The sample was of low average intellectual ability according to the WISC—R and the Luria-Nebraska T-scores. Intercorrelations between scores on the WISC—R and Luria-Nebraska lists were generally nonsignificant, with the exception of language and arithmetic measures on each test. Also, 84% or 27 of the present sample of 32 were correctly identified as learning disabled using a criterion of three or more Luria-Nebraska subscale scores greater than one SD above the mean.

Lateral Preference and Style of Cognition

1979 ◽  
Vol 48 (3_suppl) ◽  
pp. 1167-1172 ◽  
Author(s):  
Eryu Kashihara
Keyword(s):  
Factor Analysis ◽  
Test Scores ◽  
Cross Validation ◽  
Intelligence Test ◽  
Lateral Preference ◽  
Intelligence Scale ◽  
The Mean ◽  
The Right ◽  
Intelligence Test Scores ◽  
The Relationship

The relationship between cognitive ability and laterality was examined in tetras of the relation of intelligence test scores to lateral preference. The factor analysis was performed on the variables of 12 tasks of the intelligence scale and total lateral preference. A slight relation was found between lateral preference and figure combination task. To clarify the relationship, the mean scores of tasks were tested for subjects who preferred the right and left on each preference item. Some significant differences were found. On some items, the mean scores of subjects with left preferences were inferior to those of subjects with right preferences on the figure-combination task. The result confirmed Levy's finding (1969). But cross-validation on a large sample is required.

scholarly journals Association Between Low IQ Scores and Early Mortality in Men and Women: Evidence From a Population-Based Cohort Study

2015 ◽  
Vol 120 (3) ◽  
pp. 244-257 ◽  
Author(s):  
Matthew J Maenner ◽  
Jan S Greenberg ◽  
Marsha R Mailick
Keyword(s):  
Test Scores ◽  
Population Based ◽  
Early Mortality ◽  
Public High School ◽  
Senior Year ◽  
Men And Women ◽  
Iq Test ◽  
Increased Risk ◽  
Iq Scores ◽  
Underlying Mechanisms

Abstract Lower (versus higher) IQ scores have been shown to increase the risk of early mortality, however, the underlying mechanisms are poorly understood and previous studies underrepresent individuals with intellectual disability (ID) and women. This study followed one third of all senior-year students (approximately aged 17) attending public high school in Wisconsin, U.S. in 1957 (n  =  10,317) until 2011. Men and women with the lowest IQ test scores (i.e., IQ scores ≤ 85) had increased rates of mortality compared to people with the highest IQ test scores, particularly for cardiovascular disease. Importantly, when educational attainment was held constant, people with lower IQ test scores did not have higher mortality by age 70 than people with higher IQ test scores. Individuals with lower IQ test scores likely experience multiple disadvantages throughout life that contribute to increased risk of early mortality.

Can Only Intelligent People Be Creative? A Meta-Analysis

2005 ◽  
Vol 16 (2-3) ◽  
pp. 57-66 ◽  
Author(s):  
Kyung Hee Kim
Keyword(s):  
Correlation Coefficient ◽  
Test Scores ◽  
Meta Analysis ◽  
Correlation Coefficients ◽  
Quantitative Review ◽  
Threshold Theory ◽  
Support Threshold ◽  
Iq Scores ◽  
The Relationship ◽  
Cumulative Evidence

Some research has shown that creativity test scores are independent from IQ scores, whereas other research has shown a relationship between the two. To clarify the cumulative evidence in this field, a quantitative review of the relationship between creativity test scores and IQ scores was conducted. Moderating influences of IQ tests, IQ score levels, creativity tests, creativity subscales, creativity test types, gender, age, and below and above the threshold (IQ 120) were examined. Four hundred forty-seven correlation coefficients from 21 studies and 45,880 participants were retrieved. The mean correlation coefficient was small ( r = .174; 95% CI = .165 - .183), but heterogeneous; this correlation coefficient indicates that the relationship between creativity test scores and IQ scores is negligible. Age contributed to the relationship between intelligence and creativity the most; different creativity tests contributed to it secondly. This study does not support threshold theory.

The Relationship of Compliance with Coping Strategies and Self-Esteem

2003 ◽  
Vol 19 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Gisli H. Gudjonsson ◽  
Jon Fridrik Sigurdsson
Keyword(s):  
Sex Differences ◽  
Coping Strategies ◽  
Multiple Regression ◽  
Sex Difference ◽  
Test Scores ◽  
Self Esteem ◽  
Stressful Situation ◽  
Men And Women ◽  
Relationship Of ◽  
The Relationship

Summary: The Gudjonsson Compliance Scale (GCS), the COPE Scale, and the Rosenberg Self-Esteem Scale were administered to 212 men and 212 women. Multiple regression of the test scores showed that low self-esteem and denial coping were the best predictors of compliance in both men and women. Significant sex differences emerged on all three scales, with women having lower self-esteem than men, being more compliant, and using different coping strategies when confronted with a stressful situation. The sex difference in compliance was mediated by differences in self-esteem between men and women.

Multi-Center Calibration of the Second Reference Material for Thromboplastin, Rabbit, Plain, Coded CRM 149R

1991 ◽  
Vol 65 (03) ◽  
pp. 263-267 ◽  
Author(s):  
A M H P van den Besselaar ◽  
R M Bertina
Keyword(s):  
Reference Material ◽  
Standard Error ◽  
Standard Errors ◽  
Sensitivity Index ◽  
Long Term Stability ◽  
Significant Bias ◽  
The Mean ◽  
The Relationship ◽  
International Sensitivity Index

SummaryIn a collaborative trial of eleven laboratories which was performed mainly within the framework of the European Community Bureau of Reference (BCR), a second reference material for thromboplastin, rabbit, plain, was calibrated against its predecessor RBT/79. This second reference material (coded CRM 149R) has a mean International Sensitivity Index (ISI) of 1.343 with a standard error of the mean of 0.035. The standard error of the ISI was determined by combination of the standard errors of the ISI of RBT/79 and the slope of the calibration line in this trial.The BCR reference material for thromboplastin, human, plain (coded BCT/099) was also included in this trial for assessment of the long-term stability of the relationship with RBT/79. The results indicated that this relationship has not changed over a period of 8 years. The interlaboratory variation of the slope of the relationship between CRM 149R and RBT/79 was significantly lower than the variation of the slope of the relationship between BCT/099 and RBT/79. In addition to the manual technique, a semi-automatic coagulometer according to Schnitger & Gross was used to determine prothrombin times with CRM 149R. The mean ISI of CRM 149R was not affected by replacement of the manual technique by this particular coagulometer.Two lyophilized plasmas were included in this trial. The mean slope of relationship between RBT/79 and CRM 149R based on the two lyophilized plasmas was the same as the corresponding slope based on fresh plasmas. Tlowever, the mean slope of relationship between RBT/79 and BCT/099 based on the two lyophilized plasmas was 4.9% higher than the mean slope based on fresh plasmas. Thus, the use of these lyophilized plasmas induced a small but significant bias in the slope of relationship between these thromboplastins of different species.

Evaluation of the Efficacy of ST2 and NT-proBNP in the Diagnosis and Prediction of Short- Term Prognosis in Heart Failure with Reduced Ejection Fraction

2017 ◽  
Vol 9 (04) ◽  
Author(s):  
Shivananda B Nayak ◽  
Dharindra Sawh ◽  
Brandon Scott ◽  
Vestra Sears ◽  
Kareshma Seebalack ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Cardiac Biomarkers ◽  
Double Blind Study ◽  
Short Term ◽  
Double Blind ◽  
Reduced Ejection Fraction ◽  
The Mean ◽  
Design And Methods ◽  
The Relationship

Purpose: i) To determine the relationship between the cardiac biomarkers ST2 and NT-proBNP with ejection fraction (EF) in heart failure (HF) patients. ii) Assess whether a superiority existed between the aforementioned cardiac markers in diagnosing the HF with reduced EF. iii) Determine the efficacy of both biomarkers in predicting a 30-day cardiovascular event and rehospitalization in patients with HF with reduced EF iv) To assess the influence of age, gender, BMI, anaemia and renal failure on the ST2 and NT-proBNP levels. Design and Methods: A prospective double-blind study was conducted to obtain data from a sample of 64 cardiology patients. A blood sample was collected to test for ST2 and NT-proBNP. An echocardiogram (to obtain EF value), electrocardiogram and questionnaire were also obtained. Results: Of the 64 patients enrolled, 59.4% of the population had an EF less than 40%. At the end of the 30- day period, 7 patients were warded, 37 were not warded, one died and 17 were non respondent. Both biomarkers were efficacious at diagnosing HF with a reduced EF. However, neither of them were efficacious in predicting 30-day rehospitalization. The mean NT-proBNP values being: not rehospitalized (2114.7486) and 30 day rehospitalization (1008.42860) and the mean ST2 values being: not rehospitalized (336.1975), and 30-day rehospitalization. (281.9657). Conclusion: Neither ST2 or NT-proBNP was efficacious in predicting the short- term prognosis in HF with reduced EF. Both however were successful at confirming the diagnosis of HF in HF patients with reduced EF.

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