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PubMed1997

A speaking task analysis of the dysarthria in cerebellar disease.

Cerebellar disease affects a number of skilled movements, including those in speech. Ataxic dysarthria, the speech disorder that typically accompanies cerebellar disease, was studied by acoustic methods. Control subjects and subjects with ataxic dysarthria were recorded while performing a number of speaking tasks, including sustained vowel phonation, syllable repetition, monosyllabic word production (intelligibility test), sentence recitation, and conversation. Acoustic data derived from the speech samples confirmed the hypothesis that temporal dysregulation is a primary component of the speech disorder. The data also show that the nature of the disorder varies with the speaking task. This result agrees with observations on other motor systems in subjects with cerebellar disease and may be evidence of a dissociation of impairments. Suggestions are offered on the selection of measures for a given task and on the role of the cerebellum in the regulation of speaking.

Adult↗

PubMed2001

The outcome of shunted hydrocephalic children.

BACKGROUND: Neurological sequelae and mental retardation may result from different etiological types of hydrocephalus. The aim of our study is to determine the intellectual development and the "shunt history" of these children with regard to the complications and revision rates. METHODS: We reviewed the medical history of non-tumoral pediatric hydrocephalic patients who had received first shunt insertions between 1983 and 1997 and had been regularly followed up at the out-patient clinics of Taipei Veterans General Hospital. These patients were categorized into five different etiological groups. Their intelligence test scores and the surgical morbidity encountered over this period were used as the main outcome measures. RESULTS: Out of the seventy-three patients, post-meningitis hydrocephalus patients had the significantly highest shunt revision rate (2.50 +/- 0.82, p = 0.01). They also showed retardation in IQ scores, but the different was not significant when compared with other groups. The results of IQ tests were not related to either the age of initial shunt insertion (p = 0.461) or revision rates (p = 0.292). For physical disabilities, post-meningitis hydrocephalic patients showed-highest incidence of epilepsy (40%) while hydrocephalic patients associated with myelomeningocele had the highest incidence of motor deficits (56.25%). CONCLUSIONS: Childhood hydrocephalic patients had different developmental neuroimpairments with respect to different etiologies. This study provides information about the physical and mental outcome of post-operative hydrocephalic patients which is valuable to assist in counsel of their families.

Cerebrospinal Fluid Shunts↗

PubMed2005

Breast-feeding influences cognitive development in Filipino children.

The importance of breast-feeding (BF) for cognitive development has been researched widely over the past several decades. Although scholars agree that children who breast-feed are generally more intelligent, it is uncertain whether this advantage is due to BF effects or to other accompanying healthy characteristics of women who breast-feed. This is a problem in nearly every study, and even in studies controlling for known confounding variables, residual confounding remains a concern. This study tried a new approach, evaluating the relation between BF and cognitive development or ability in a population in which BF was inversely correlated with socioeconomic advantages and other healthy maternal behaviors. Normal birthweight (NBW, n = 1790) and low birthweight (LBW, n = 189) (<2500 g) infants born in 1983-84 in Metropolitan Cebu, Philippines were followed from birth through middle childhood. Cognitive ability was assessed at ages 8.5 and 11.5 y with the Philippines Nonverbal Intelligence Test. Multivariable linear regressions were created to estimate crude and adjusted relations of various BF measures and later cognitive ability. After controlling for confounding variables, scores at 8.5 y were higher for infants breast-fed longer (1.6 points and 9.8 points higher among NBW and LBW infants, respectively, breast-fed for 12 to <18 mo vs. <6 mo). BF coefficients in both NBW and LBW 11.5-y models were attenuated but remained positive. This analysis highlights the importance of long-term BF after initial introduction of complementary foods, particularly in LBW infants born close to term.

Birth Weight↗

PubMed1982

[Gradual discharge as part-time inpatient treatment].

About 34 p.c. of the patients coming from Mannheim or outskirts treated in the child and adolescent psychiatric clinic situated in the centre of Mannheim attended a kindergarten, a public school or being at work outside the clinic while in part-time in-patient treatment or before release. These patients scored somewhat but not significantly higher on intelligence tests, had better school attainment and consisted of a relatively higher proportion of females compared with patients who were not involved in activities outside the clinic. Diagnostically a somewhat greater number of psychosis, neurotic/emotional disorders were found among the part-time group and they showed also more associations with abnormal familial background, a higher proportion of part-time patients were not discharged to their families and have been treated for a longer time respectively. Not related to the length of treatment a significantly more positive successful treatment could be demonstrated among the part-time group. Particular aspects of a more realistic approach of treatment are discussed.

Adolescent↗

PubMedDate not supplied

Relationships among nonverbal intelligence, hand speed, and serum testosterone level in left-handed male subjects.

The relationships among nonverbal intelligence, hand speed, and serum testosterone level were studied in male left-handers ranging in age from 17 to 19 years. Hand speed was measured by a peg moving task. To assess the differences between nonverbal IQs. Cattell's Culture Fair Intelligence Test was used. There was a direct correlation between IQ and testosterone. IQ increased linearly with right-hand speed, which was directly related to testosterone. There was no significant correlation between IQ and left-hand speed, which was not significantly correlated with testosterone. IQ decreased with left- minus right-hand speed, which also decreased with testosterone. It was suggested that nonverbal spatial reasoning ability may be directly associated with the efficiency of left brain, which is favored by testosterone in male left-handers. It was also concluded that the left to right asymmetry in hand speed may depend on efficiency of the right brain in left-handed males.

Adolescent↗

PubMed1997

Higher neonatal cerebral blood flow correlates with worse childhood neurologic outcome.

Cerebral blood flow (CBF) in newborn infants is often below levels necessary to sustain brain viability in adults. Controversy exists regarding the effects of such low CBF on subsequent neurologic function. We determined the current childhood neurologic status and IQ in 26 subjects who had measurements of CBF performed with PET in the neonatal period between 1983 and 1989 as part of a study of hypoxic-ischemic encephalopathy. Follow-up information at ages 4 to 12 years was obtained on all 26 subjects. Ten subjects had died. All 16 survivors underwent clinical neurologic evaluation, and 14 also underwent intelligence testing. Eight had abnormal clinical neurologic evaluations; eight were normal. The mean neonatal CBF in those with abnormal childhood neurologic outcome was significantly higher than in those with normal childhood neurologic outcome (35.64 +/- 11.80 versus 18.26 +/- 8.62 mL 100 g(-1) min(-1), t = 3.36, p = 0.005). A significant negative correlation between neonatal CBF and childhood IQ was demonstrated (Spearman rank correlation r = -0.675, p = 0.008). Higher CBF was associated with lower IQ. The higher CBF in subjects with worse neurologic and intellectual outcome may reflect greater loss of cerebrovascular autoregulation or other vascular regulatory mechanisms due to more severe brain damage.

Cerebrovascular Circulation↗

PubMed1979

Peptic ulcer in childhood. Psychological factors.

Thirty children (20 girls and 10 boys, aged 6-16 years) with primary peptic ulcers, matched in paris for age, sex and socio-economic standard to a group of 30 ulcer-free controls, were submitted to a structured psychiatric interview, a structured 'present psychiatric state' examination and to personality and intelligence tests. With one exception all patients suffered from duodenal ulcer; 3 male patients had personalities with psychopathic elements, 7 patients had nicknames, 5 suffered from psychiatric disorders, 3 had attempted suicide in the past, and 3 had had homosexual experiences. These parameters were negative in all controls. The patients had lower mean IQ, worse scholastic adaptation, more anxious and overprotective parents, higher frequency of faddiness in food and lower frequency of nail-biting than the controls. Psychotraumatic events had preceded the onset of ulcer symptomatology in 11 cases. The findings are discussed and the contribution of psychological factors in the pathogenesis of childhood peptic ulcer is stressed.

Adolescent↗

PubMed1980

Vigilance paradigm for preschool children used to relate vigilance behavior to IQ and prenatal exposure to alcohol.

A methodology for investigating vigilance behavior in preschool children was developed. The administration of the task was adapted to young children and a scoring system was devised to adjust for the higher level of random responding found in this sample of preschoolers. 28 3- and 4-yr.-olds were given the Stanford-Biner Intelligence Test and a 12-min. vigilance task. The children, drawn from a sample used in a larger study, were the offspring of three groups of mothers: recovered alcoholics who drank during pregnancy, recovered alcoholics who did not drink during pregnancy, and nonalcoholics who drank litt or nothing during pregnancy. A significant correlation was found between the number of correct responses on the vigilance task and IQ (r26 = . 53, p less than .01). The conclusions that can be drawn regarding the relationship of vigilance to maternal alcohol use (chi 2 = 4.82, p less than .09) are limited by small sample size.

Alcohol Drinking↗

PubMed1978

A study of the play behavior of retarded children.

Piaget, Almy and Peller have pointed to the necessity of play for cognitive development. Earlier, Lehman and Witty, Boyton and Ford, Horne and Philleo. Tilton, Ottinger and Weiner conducted studies on play in cognitively disturbed children. Hetzer and Inhelder show that the retarded child annot utilize his play area because of poor imagination and lack of expressive skills. Many play activities have a perseverating character. They cannot make sufficient use of the possibilities inherent in the toys presented to them. Uncontrolled drives inhibit creative and constructive play. Often, a plan d'attaque for play is lacking. Following on the heels of earlier studies, systematic play observations of 38 retarded children were made using ten observation categories. In Table II the results are shown of the way in which the child uses a toy. The play behavior of the retarded child is predominated by a great need to explore, experiment and move. He hardly has a chance to use toys in a creative way resulting in a play endproduct. The choice of toys is given in Table III. Boys had a particular interest in vehicles and environmental material, girls in dolls. According to expectation, the level of play behavior (Table IV) and the scores on an intelligence test (HAWIK) appeared to positively correlate with each other. This was also true for the correlations between the subtest scores and play behavior, with the exception of similarities and block design. Also, the variation in the exhibited play behavior correlated positively with the measured IQ's. In view of the correlations found, there are indications that imitation play is important for emotional and social behavior. Older study results, which showed a connection between an identification score and imitation play seem to be confirmed in retarded children, too. For the practical situation in child-rearing and education, the study results point to the necessity of bringing the retarded child into contact with as many different toys as possible.

Child↗

PubMedDate not supplied

Differences that make a difference: comparisons of metacomponential functioning and knowledge base among groups of high and low IQ learning disabled, mildly mentally retarded, and normally achieving adults.

To determine if cognition among persons with learning disabilities (LD) and mild mental retardation (MMR) is similar, we compared metacomponential functioning and knowledge acquisition across groups of incarcerated adults with LD and high IQ (HIQLD), with LD and low IQ (LIQLD), with normal achievement (NA), and with MMR. The Slosson Intelligence Test Computer Report (Nicholson, 1984) formula established criteria for group inclusion. Metacomponential functioning among 77 males and 26 females was measured by a confidence test (Echternacht, Boldt, & Sellman, 1971) designed for the general knowledge subtest of the SRA Achievement Battery (Naslund, Thorpe, & Lefever, 1982). Knowledge base and group membership were significantly related to metacomponential ability (R2 = .84). Persons with HIQLD and LIQLD performed better than those with MMR on both measures. The HIQLD, however, did not outperform their peers with NA. Results show that (a) knowledge base is the best predictor of metacomponential skill, (b) metacomponential orchestration differentiates persons with HIQLD from those with LIQLD and both groups from persons with MMR, and (c) IQ mediates metacognition, but does not explain it. Education should emphasize knowledge acquisition for people with HIQLD; people with LIQLD and MMR require more attention to metacognition.

Achievement↗

PubMed1981

The effects of prophylactic treatment of the central nervous system on the intellectual functioning of children with acute lymphocytic leukemia.

The effect of central nervous system prophylaxis (cranial radiation and intrathecal chemotherapy) on intellectual function was studied in 24 children with acute lymphocytic leukemia. The Wechsler Intelligence tests were administered to these children and to a sample of their healthy siblings, who served as a comparison group. The mean Full Scale lQ was 98.6 for the patients and 112.5 for the sibling controls (p less than 0.001 level). Those patients who received central nervous system preventive treatment at a young age exhibited a greater decrement in intellectual abilities than did patients who were older when they received this treatment. In contrast, leukemia patients who had not received central nervous system prophylaxis had IQs that did not differ statistically from those of their siblings. These data suggest that central nervous system prophylaxis may have an adverse effect on the intellectual capability of children with acute lymphocytic leukemia.

Adolescent↗

PubMed1979

Clues to aural discrimination.

Five measures of the items of the Multiple-Choice Intelligibility Test were obtained: apparent aural similarity of the four words available to a listener on hearing a stimulus, interconsonantal differences among the prevocalic portions of these words, phonemic discrepancies among these words, distinctive feature differences among these words, and the pooled discrimination score of the four words that were available to the responder on hearing the stimulus. The last score was made the target in a multiple correlation problem, and the relative contribution, combined and separately, of the four remaining measures to the target measure was determined. These four measures accounted for approximately 45% of the variance among the scores of discrimination. The strongest contributors were apparent aural similarity of the available responses and the phonemic discrepancy among the available responses.

Cues↗

PubMed1994

Wechsler IQ profile and theory of mind in autism: a research note.

The unusually uneven intelligence test profile found in autism has been consistently replicated. However, few psychological theories of autism give prominence to this feature. Nor is it clear how currently influential theories, such as the theory of mind account or the executive function hypothesis, can explain the marked peaks and troughs found in the performance of both high- and low-functioning individuals with autism. The present study reports the pattern of Wechsler subtest results for subjects with autism who do or do not pass standard theory of mind tasks. The results suggest that while difficulty with the Comprehension subtest may reflect poor theory of mind, relative skill on the Block Design subtest is characteristic of subjects with autism regardless of theory of mind performance. Implications of this finding for the central coherence hypothesis are considered.

Adolescent↗

PubMed1993

Median facial dysplasia in unilateral and bilateral cleft lip and palate: a subgroup of median cerebrofacial malformations.

The median facial dysplasia group of patients is a unique, distinct, definable group characterized by mid-line facial deficiencies in the presence of a unilateral or bilateral cleft lip with or without cleft palate and without clinically detectable anomalies of the brain. This group of patients comprised 2 percent of new cleft lip and palate patients. The midline facial deficiencies in median facial dysplasia are characterized by a poorly defined Cupid's bow, absence of the labial frenulum and anterior nasal spine, deficient columella, and poorly developed septal cartilage and premaxilla. One of the central incisors may be absent or rudimentary. There are no definable gross abnormalities of the brain. The results of intelligence tests of median facial dysplasia patients have a normal distribution and are not significantly different from those of a noncleft normal population. Unoperated and operated median facial dysplasia patients all have typical midfacial growth disturbances below the norm for their ages. The classification of median facial dysplasia patients as well as other median cerebrofacial anomalies, the embryologic basis of these deformities, and the clinical results of their treatment are helpful in understanding some of the problems related to the treatment of the cleft lip and palate patient. Median facial dysplasia patients demonstrate an inherent potential for poor midfacial growth. Deficiencies of soft tissue such as a lack of the Cupid's bow make it difficult to reconstruct the lip and nose satisfactorily.

Abnormalities, Multiple↗

PubMed2000

Genetic factor analyses of specific cognitive abilities in 5-year-old Dutch children.

The genetic and environmental factor structures of intellectual abilities in 5-year-old Dutch twins were examined. Six subtests of the RAKIT, a Dutch intelligence test, were administered to 209 twin pairs. The subtests were categorized as either verbal or nonverbal. The genetic covariance structure displayed a two-common factor structure including specific factors to account for subtest residual variance. The correlation between the genetic Verbal and genetic Nonverbal factors did not differ significantly from zero. The shared environmental influence displayed a single-common factor structure. Unique environmental influences did not contribute to the covariance between subtests and were specific in origin. Estimates of heritability of the subtests ranged from 15% to 56%. Shared environmental influences were significantly present, but were modest in magnitude. The phenotypic data was best described by an oblique two-factor model. This model was not mirrored in the factor structures found for either the genetic or environmental covariances.

Child, Preschool↗

PubMed1984

[Effect of open heart surgery on intellectual efficiency. Prospective study apropos of 40 cases].

Neurological accidents following open heart surgery have become exceptionaly rare because of technical advances. However, some minor intellectual problems are quite common (loss of memory, lack of concentration...). The results of previous studies on this subject have been quite contradictory. A prospective study of 40 patients was undertaken to determine the repercussions of open heart surgery with cardiopulmonary bypass on intellectual efficiency. The protocol chosen used Wechsler's intelligence test, the calculation of mental deterioration based on this test and Wechsler's clinical scale of memory. The tests were performed before surgery, in the immediate postoperative period and after six months (30 patients). The purely cardiological side of these cases and social considerations were also taken into account. In the immediate postoperative period, 55% of patients showed signs of intellectual deterioration, with respect to their age. After six months, the overall incidence was 25%. Some patients showed intellectual deterioration before surgery. The influence of the type of surgery is difficult to determine. The cardiopulmonary bypass time was significant. The preoperative intellectual level was also important, as was the return to normal activities after surgery. Finally, age, of course, played an important part. These results cannot be isolated from the study of the psychological reactions of the patients to cardiac surgery and their influence on the outcome and rehabilitation after surgery.

Adult↗

PubMed1996

A comparative, descriptive study of reading and writing skills among non-speaking children: a preliminary study.

For many non-speaking. Bliss-using persons with cerebral palsy (CP), literacy skills seem hard to achieve, although their cognitive functioning and verbal reception skills would predict good reading and writing. The aim of this study was to describe literacy skills in relation to intellectual level and to level of phonological awareness, which are both considered important predictors of literacy in the speaking population. Seven disabled adolescents participated in the study. In a comparison group there were seven children matched for results on a non-verbal intelligence test and a test of phonological awareness. The subjects in the disability group performed on a lower level on reading and spelling variables than the subjects in the comparison group. The results also indicated that the spelling skills of the subjects in the disability group were more developed than their reading skills, and that spelling of words represented by photographs of well-known objects, presented visually only, seemed more difficult than spelling of words presented orally. A tentative explanation of these latter two results was proposed, namely that the phonological awareness of the subjects facilitated spelling, but that access to phonological and orthographic representation of visually presented material might be more difficult than orally presented material for non-speaking persons. The differences between the two groups also suggested that the subjects in the disabled group seemed to have difficulty in benefiting from formal literacy skills training at school.

Adolescent↗

PubMed1990

Relationship of testosterone and nonverbal intelligence to hand preference and hand skill in right-handed young adults.

The relationship between serum testosterone level and nonverbal intelligence was studied in right-handed young adults with regard to handedness. Hand preference was assessed by the Edinburgh Handedness Inventory. Hand skill was measured by a peg moving task. Serum testosterone level was determined using tritium-marked-radioimmunoassay. Visual-spatial performance (nonverbal intelligence) was measured by Cattell's Culture Fair Intelligence Test. In men with consistent right-hand preference (GSs: 80 to 100), IQ was found to be positively linearly related to serum testosterone, which exhibited two regression lines belonging to low and high difference in skill between hands. In females with consistent right-handedness, there was a negative linear correlation between IQ and serum testosterone, which also exhibited two different regression lines according to difference in skill between hands. In males with moderate right-hand preference (GSs 50 to 75), IQ was found to be positively linearly related to serum testosterone, exhibiting two different (same slopes) regression lines according to difference in skill between hands. In females with moderate right-hand preference, IQ first increased and then decreased with serum testosterone, exhibiting a quadratic relationship. These results suggested that serum testosterone in young adults may be associated with visual-spatial performance depending upon sex, hand preference, and hand skill.

Adolescent↗