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PubMed1990

What one intelligence test measures: a theoretical account of the processing in the Raven Progressive Matrices Test.

The cognitive processes in a widely used, nonverbal test of analytic intelligence, the Raven Progressive Matrices Test (Raven, 1962), are analyzed in terms of which processes distinguish between higher scoring and lower scoring subjects and which processes are common to all subjects and all items on the test. The analysis is based on detailed performance characteristics, such as verbal protocols, eye-fixation patterns, and errors. The theory is expressed as a pair of computer simulation models that perform like the median or best college students in the sample. The processing characteristic common to all subjects is an incremental, reiterative strategy for encoding and inducing the regularities in each problem. The processes that distinguish among individuals are primarily the ability to induce abstract relations and the ability to dynamically manage a large set of problem-solving goals in working memory.

Adult↗
PubMed2003

Correlations for the Vineland Adaptive Behavior Scales with Kaufman Brief Intelligence Test in a forensic sample.

People with an intellectual disability are over-represented in the criminal justice system in many western countries. Identifying accused persons with intellectual disability is important if they are to receive protections available under the law. Accurate diagnosis is also relevant for correctional administrators, probation and parole services, and community services. Diagnosis of intellectual disability must be made on the basis of both cognitive skills (intelligence) and adaptive behavior. In this study, the Kaufman Brief Intelligence Test assessed intelligence, and the Vineland Adaptive Behavior Scales assessed adaptive behavior, through self-report. Tests were administered to 150 offenders, ranging in age from 13 to 53 years, in Australian prisons, juvenile detention centers, legal aid offices, and probation services. Pearson product-moment correlation coefficients calculated among all subtests and between total scores were significant. ROC curve analyses demonstrated that performance on each effectively predicted a standard score of less than 70 on the other one.

Adaptation, Psychological↗
PubMed1999

Survivors of neonatal extracorporeal membrane oxygenation at school age: unusual findings on intelligence testing.

Data are presented on 17 children who received extracorporeal membrane oxygenation (ECMO) in the neonatal period for persistent pulmonary hypertension (PPHN). These children are being followed as part of a larger program of follow-up research on children who have been treated for PPHN with several treatment methods. On intelligence testing at ages 5 to 8 years, these 17 children had unusual patterns of results. A higher-than-predicted percentage of the ECMO survivors had discrepancies between their Verbal and Performance IQ and a much-higher-than-predicted percentage had areas of unusual strength or weakness on their IQ subtest scores. Also, there was a significant correlation between the amount of time a child received ECMO and the child's Performance IQ: the longer the child received ECMO, the higher the Performance IQ. While findings of unusual weaknesses or deficits on intelligence testing at school age in children who have been severely ill in the neonatal period are not unusual, findings of high scores and areas of strength are not easily explained, particularly when these findings seem to relate to an invasive treatment like ECMO. Similar findings have been reported in two other small studies, which suggest that the impact of ECMO on the developing infant brain may not be purely detrimental.

Child↗
PubMed1984

The Slosson Intelligence Test and young learning-disabled children: a comparative study.

Evaluated 26 children independently diagnosed as learning disabled in a counterbalanced design with the deviation IQ form of the Slosson Intelligence Test and the Wechsler Intelligence Scale for Children-Revised (WISC-R). Moderate to good correlations were obtained between the Slosson and the WISC-R Full Scale (r = .91), Verbal (r = .94) and Performance (r = .60) IQ scores. The Slosson correctly predicted functioning level to within 10 IQ points of WISC-R Full Scale scores for 88% of the Ss. These data suggest that the recent revision of the Slosson has corrected the tendency of earlier versions of this instrument to inflate the estimated IQs of young learning-disabled children.

Child↗
PubMed2004

The differential effect of conation on intelligence test scores among brain-damaged and control subjects.

Conation, or the ability to apply effective effort in completing a task over time, has been shown to be impaired in brain-damaged subjects. Various intelligence tests differ in the apparent extent to which they require conative ability. In this study we compared results earned by brain-damaged and control groups on three measures of intelligence: Wechsler Verbal IQ (VIQ), Wechsler Performance IQ (PIQ), and the Henmon-Nelson Test (HNT) of Mental Ability. Test scores were converted to T-score distributions for the combined groups in order to delete possible effects of differences in standardization procedures and the normative samples on which IQ scores were generated. The degree of impairment shown by the brain-damaged subjects was in direct relationship to the extent to which the three intelligence measures appear to require conation. The results support a generalization that intelligence tests that require a greater conative ability tend to produce lower scores for brain-damaged persons, as compared to controls, than do intelligence tests that are less demanding of conation.

Adult↗
PubMed1978

Evaluation of intelligence in youthful offenders: the Kahn Intelligence Tests.

It was hypothesized that there is a correlation between IQs on the Kahn Intelligence Tests and the WAIS. It was predicted that the correlation between the KIT IQs and the WAIS Performance IQs would be significantly higher than those between the KIT IQs and WAIS Verbal and Full Scale IQs. The KIT and WAIS were administered to 30 Negro and 20 white offenders ages 16-0 to 20-11. Pearson rs of .656, .649, and .714 were significant. Contrary to prediction, the r between the KIT IQs and the WAIS Performance was the lowest. Mean IQs were significantly different.

Adolescent↗
PubMedDate not supplied

Relation between Kaufman Brief Intelligence Test and WISC-III scores of children with RD.

Concurrent validity of the Kaufman Brief Intelligence Test (K-BIT) with the Wechsler Intelligence Scale for Children-Third Edition (WISC-III) was evaluated, as well as the K-BIT's accuracy as a predictor of WISC-III scores, in a sample of young children with reading disabilities. The two measures were administered to 65 children from Atlanta, Boston, and Toronto who ranged from 6-5 to 7-11 years of age at testing. Correlations between the verbal, nonverbal, and composite scales of the K-BIT and WISC-III were .60, .48, and .63, respectively. Mean K-BIT scores ranged from 1.2 to 5.0 points higher than the corresponding WISC-III scores. Standard errors of estimation ranged from 10.0 to 12.3 points. In individual cases, K-BIT scores can underestimate or overestimate WISC-III scores by as much as 25 points. Results suggest caution against using the K-BIT exclusively for placement and diagnostic purposes with young children with reading disabilities if IQ scores are required.

Child↗
PubMed1994

Traits and relationship status: stranger versus peer group inhibition and test intelligence versus peer group competence as early predictors of later self-esteem.

A 9-year longitudinal study of 99 children observed from ages 4 through 12 showed that inhibition toward strangers was strongly related to inhibition with peers, and test intelligence to social competence with peers, only in the first months of preschool socialization. These correlations decreased later on. Stranger inhibition and test intelligence were not predictive of social self-esteem in middle childhood. However, high inhibition and low competence in the peer group after 1 and 2 years of group socialization did predict low social self-esteem up to age 10. Discussion focuses on the processes that might mediate these correlative relations and on the role of relationship-unspecific traits and relationship-specific individual attributes for later social-emotional developmental outcomes.

Child↗
PubMed2001

[Snijders-Oomen Nonverbal Intelligence Test: useful for the elderly?].

The feasibility of the SON-R 5 1/2-17, a non-verbal intelligence test for deaf children, was investigated in a group of older adults, with a view to the future use of the test in older neurological patients. In a group of 58 healthy elderly persons intelligence was measured with the SON, the Raven Progressive Matrices and a Dutch reading test. The subjects were also asked for their subjective judgements of the tests. The SON-R 5 1/2-17 appears to be a user-friendly test. The high correlations between the subtests, and between the SON and other measures of intelligence suggest that the SON is a valid test for measuring fluid intelligence in elderly persons. The existing norms are not suitable when the SON is used in elderly people, new norms for adults should therefore be developed.

Aged↗
PubMed2006

Exploring the validity of the Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT) with established emotions measures.

Emotions measures represent an important means of obtaining construct validity evidence for emotional intelligence (EI) tests because they have the same theoretical underpinnings. Additionally, the extent to which both emotions and EI measures relate to intelligence is poorly understood. The current study was designed to address these issues. Participants (N = 138) completed the Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT), two emotions measures, as well as four intelligence tests. Results provide mixed support for the model hypothesized to underlie the MSCEIT, with emotions research and EI measures failing to load on the same factor. The emotions measures loaded on the same factor as intelligence measures. The validity of certain EI components (in particular, Emotion Perception), as currently assessed, appears equivocal.

Adult↗
PubMed2002

From the Binet-Simon to the Wechsler-Bellevue: tracing the history of intelligence testing.

The history of David Wechsler's intelligence scales is reviewed by tracing the origins of the subtests in the 1939 Wechsler-Bellevue Intelligence Scale. The subtests originated from tests developed between 1880 and World War I, and was based on approaches to mental testing including anthropometrics, association psychology, the Binet-Simon scales, language-free performance testing of immigrants and school children, and group testing of military recruits. Wechsler's subtest selection can be understood partly from his clinical experiences during World War I. The structure of the Wechsler-Bellevue Scale, which introduced major innovations in intelligence testing, has remained almost unchanged through later revisions.

Adult↗
PubMed1953

The uses and predictive limitations of intelligence tests in infants and young children.

The author was asked by the World Health Organization to examine whether appraisals of intelligence of infants and young children show enough predictive validity to be dependable criteria on which to base adoption policy. Studies have shown that mental-test performances by children under 6 years of age have little predictive significance, although reasonable prediction may be made in about 37% of cases at the age of 6 years. Moreover, too much importance should not be given to the tested intelligence of parents, particularly those tested under stress, unless their intelligence quotients are over 90; it provides, however, a better guide, taken alone, than do the tests on infants alone. Tests on infants should be considered together with those on the parents and with a number of other factors, including a full developmental history of the child, its health record, and the results of a medical and neurological examination. The author concludes by saying that the major emphasis in adoption should perhaps be placed on the needs of the adopting parents; those who would only respond to a child of high ability should be urged not to adopt an infant but rather a child who has reached an age where prediction can be more accurate.

Child↗
PubMed1978

Fatigue effects on intelligence test performance in the elderly.

The purpose of the study was to investigate effects of fatigue on intelligence test performance in the elderly. Dependent variables were Verbal Comprehension, Numerical Facility, Perceptual Speed, and Word Fluency tests. Fatigue effects were investigated by varying the number of previous tests administered, by introducing breaks between tests in some conditions, and by using a pre-test fatigue-producing condition, a modified form of the Finding A's test. Subjects' ages were between 57 to 91-years. It was hypothesized that the Finding A's test would be more fatiguing than a long battery of tests and that introducing a break condition between the Finding A's test and the main battery would alleviate fatigue effects. Analyses of Variance resulted in a main effect due to a pre-test condition for the Perceptual Speed test only, and only when the main battery was preceded by the Finding A's task (p less than .001). It appears that the elderly are not as susceptible to test fatigue as previous results seemed to suggest.

Age Factors↗