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1.
L S Siegel 《Child development》1983,54(5):1176-1188
The consequences of correcting developmental test scores for the degree of prematurity were studied in 2 cohorts of children each composed of demographically matched groups of preterm and full-term infants. The children were administered the Bayley Scales at 4, 8, 12, 18, and 24 months of age; the Stanford-Binet at 3 years; the Reynell Developmental Language Scales at 2, 3, and 4 years; and the McCarthy Scale of Children's Abilities, the ITPA Grammatic Closure, the Northwestern Syntax Screening Test, the Beery Developmental Test of Visual Motor Integration, and the Peabody Picture Vocabulary Test at 5 years. At each point in time, except some language measures at 5 years, the uncorrected scores of the preterms were significantly lower than those of the full-terms. Although the corrected scores were significantly lower early in development, they were not lower at 5 years, with the exception of the Beery VMI, a measure of perceptual-motor skills. In the first year the corrected scores were typically more highly correlated with 3-year and 5-year test scores. From 12 months on the uncorrected scores were usually more highly correlated. The same pattern was evident for the prediction of developmental delay. Correction for degree of prematurity appears to be appropriate in the first few months. After that point, slightly more accurate prediction is achieved by using the uncorrected scores. Early test scores are significantly influenced by the degree of biological maturity, but the impact of environmental influences increases with development.  相似文献   

2.
A measure of mother-infant synchrony was developed and used to compare the interactions of mothers with preterm and mothers with full-term infants. Each mother-infant dyad was observed during a standard bottle-feeding session on 3 separate occasions: once prior to hospital discharge and 1 and 3 months after discharge. Synchrony, defined by the correlation between mother and infant behavioral rates during corresponding segments of the observation session, was found to (1) distinguish between preterm and full-term groups at 3 months and (2) successfully predict below-average Home Observation for Measurement of the Environment (HOME) scores at 9 months for dyads in which mother and infant behavioral rates were inversely related. Further analysis identified certain interaction characteristics related to synchromy.  相似文献   

3.
A group of 46 full-term and 54 high-risk preterm (less than 1,500 grams birthweight) infants were tested at 6, 7, and/or 8 months of age (corrected age for preterms) on a battery of problems assessing visual recognition memory and tactual-visual cross-modal transfer. At all 3 ages, scores obtained on aggregates of 6-11 problems in the battery significantly predicted 3-year Stanford-Binet IQ: correlations ranged from r = .37 to r = .63, and clustered between r = .50 and r = .60. When aggregates from 2 or 3 ages were used as predictors, multiple correlations were as high as R = .60 and R = .70. Cutoffs for predicting children at risk for mental retardation (IQ less than 70) or cognitive delay (IQ less than 85) showed reasonable sensitivity and specificity, although low scores were poor at detecting IQs less than 70. The internal consistency of composites, indexed by alpha coefficients, was unexpectedly low, primarily because the problems shared little variance. However, stability coefficients between assessments as much as 1 and 2 months apart were moderate in magnitude, ranging from r = .30 to r = .50. Considering the high degree of predictive validity, the stability figures appear to be better estimates of reliability for these measures than are indices of internal consistency. The relations reported here were similar for both full-terms and preterms.  相似文献   

4.
The relation of nonoptimal condition at birth to the intellectual development of children reared in 2 different environments was investigated in a 4 1/2-year longitudinal experiment. Subjects were 80 disadvantaged children, half of whom were randomly assigned at birth to a day-care program designed to prevent mild mental retardation and half to an educationally untreated control group. All subjects for this report were full-term and weighed over 2,500 grams at birth; condition at birth was considered nonoptimal if the 1-min Apgar score was less than or equal to 8. Results indicated that nonoptimal perinatal status had significant adverse effects on 4 1/2-year scores on the McCarthy Scales of Children's Abilities in the control group (p less than .01); however, test scores of children with optimal or nonoptimal Apgars did not differ within the group that received educational treatment. The results provide support for a framework stressing initial biological vulnerability and subsequent environmental insufficiency as cumulative risk factors in the development of children from low SES families.  相似文献   

5.
Use of the Bayley Scales to characterize abilities of premature infants   总被引：1，自引：0，他引：1  
G Ross 《Child development》1985,56(4):835-842
The Bayley Scales of Infant Development were administered to 92 white, middle-class infants, half of them premature and half full-term, at 1 year of age from term to determine whether this instrument is useful in characterizing the abilities of premature infants. Although both full-term and premature infants achieved mental and motor development scores within the average range, full-term infants attained significantly higher scores on both the Mental and Motor Scales. Both groups scored significantly lower on motor than mental functioning; however, the difference was significantly greater for premature infants. As a group, premature infants also evidenced greater variability in their performance on both the Mental and Motor Scales, and they showed greater intra-individual variability in performance of motor ability. Furthermore, premature infants were less likely to succeed on items testing eye-hand coordination, imitation, and vocalization. Preselected perinatal risk variables accounted for a significant amount of variance in both mental and motor ability of premature infants.  相似文献   

6.
Around 1980, many perinatal centers began prospective cranial screening of preterm infants using portable ultrasonography at the bedside. This study examined developmental outcome at 1 and 2 years in relation to the presence and severity of neonatal intraventricular hemorrhage (IVH). It varies from earlier reports in the size of the sample, restriction to infants without periventricular leukomalacia (PVL), and an attempt to formulate a predictive model by examining development longitudinally. Parametric and nonparametric analyses demonstrated that IVH related to Bayley mental and motor scores and neurologic ratings at 1 year but not at 2 years. Developmental delay and/or neurologic abnormality were more prevalent in infants with severe IVH but were far from universal. Regression analyses on prediction from neonatal and 1-year performance to 2-year scores revealed significant associations between the 1- and 2-year measures but not the neonatal and outcome measures. A direct insult to the CNS such as IVH thus constitutes only a limited model of risk status.  相似文献   

7.
This study investigated predictors of early infant social development and the role of social support as a resilience factor among Arab-Bedouin families. We propose a mediation model in which social support will be related to maternal postpartum emotional distress (PPED), which in turn will be related to infant social responsiveness. One hundred five Arab-Bedouin mothers (age range = 17–44 years) and their preterm (n = 48) and full-term (n = 57) infants were recruited shortly after birth and were followed up at age 12 months. Findings demonstrate that, among the preterm group, higher levels of social support predicted lower levels of maternal PPED, and this, in turn, predicted higher levels of infant social responsiveness.  相似文献   

8.
THE DEVELOPMENT of 58 preterm infants classified as low‐risk was compared over their first 7 years with a control group of 100 full‐term healthy infants. One major conclusion from this ongoing study is the critical need to take account of age when outcomes for prematurely born children are compared with full‐term children. As well as finding “catch up” phenomena at certain ages, the study also found periods during which there were reverses of this favourable tendency. Further, the study provided evidence that perinatal risk conditions may have a differential impact on mental development, depending on social‐environmental factors. It was suggested that advantaged family circumstances may reduce or even fully compensate for the adverse effects of preterm birth whereas a disadvantaged environment may amplify them.  相似文献   

9.
The home environments of 42 10- and 11-year-old children were examined when they were infants and again during middle childhood. Significant correlations were observed between home environments measured at both 2 years and 10 years and the children's SRA achievement test scores and their classroom behavior. However, the home environment at 6 months was only related to a limited number of classroom behaviors. Partial correlations were used to test 3 models of environmental action: Model I (primacy of early experience), Model II (predominance of the contemporary environment), Model III (cumulative effects in stable environments). Strongest relations were noted for the contemporary environment, but all 3 models received some support. Correlations between HOME scores and children's competence in middle childhood revealed a complex portrait that was not explainable with reference to a single model of environmental action. The version of the HOME Inventory used with families of elementary school children is also introduced.  相似文献   

10.
Prediction of five-year Stanford-Binet scores in preterm infants   总被引：3，自引：0，他引：3  
The development of a group of 100 preterm infants, mean birth weight 1,877 grams, from a broad range of social class and ethnic backgrounds was followed from birth to age 5. Assessments in infancy were directed at medical problems and early perceptual, motor, social, and cognitive development. The child's performance on the Stanford-Binet test at age 5 could not be predicted from early hazardous events in the obstetrical or neonatal period. The results indicate that developmental outcome at age 5 could be predicted moderately from a single measure, infant visual attention, administered as early as term date. Prediction was improved by using a combination of assessments given during the first 9 months. Furthermore, prediction was significantly better for girls than for boys. Although moderate stability in performance was found for the group as a whole, prediction of an individual's performance resulted in a substantial number of children being misclassified. Social factors were more important than any other set of factors in relating to the child's mental performance at age 5.  相似文献   

11.
Early home intervention with low-birth-weight infants and their parents   总被引：1，自引：0，他引：1  
We investigated the effects of a year-long home intervention with a sample of preterm infants randomly assigned to 1 of 3 groups: a developmental intervention, a parent-infant intervention, and a no-treatment control group. A full-term no-treatment control was also used. Both intervention approaches focused on the parent-child unit, providing training for parents to improve observational skills, emotional support, and information about community resources. However, whereas specific tasks to facilitate the child's development were provided in the developmental intervention group, the quality of the parent-infant interaction was the target for treatment in the other group. All infants were assessed at 4, 8, 12, and 16 months of age corrected for prematurity. The results suggest that although both intervention approaches were effective in modifying some aspects of the home environment and, to a lesser degree, in improving infants' cognitive development, the parent-infant interaction approach seemed to have the greater impact. These findings confirm previous observations regarding the cognitive development of preterm and full-term infants during the first 18 months of life and demonstrate changes in behavior and behavior styles in both pre- and full-term infants as they become older.  相似文献   

12.
A number of preterms who had participated in a study of visual recognition memory when they were 6 months of age were seen at older ages to assess the predictive validity of the early visual measures for cognitive outcome. The Bayley scales were administered at 6, 12, and 24 months, the Stanford-Binet at 34 and 40 months, and the WISC-R at 6 years. Novelty scores, which reflect the relative amount of time infants look at new compared to familiar stimuli, constituted the measure of infant visual processing. These scores, obtained by averaging over performance on the 3 or 4 problems administered at 6 months of age, were consistently and significantly related to cognitive measures from 24 months to 6 years, with correlations ranging from r = .53 to r = .66. Parental education, which was unrelated to novelty scores, bore a strong relationship to outcome beginning at 24 months. Although both measures contributed uniquely to the variance in cognitive outcome at 24 months and 6 years, visual novelty scores made a stronger contribution than did parental education. Neither 6- nor 12-month Bayley scores, nor various perinatal variables, were related to outcome.  相似文献   

13.
The Infant Health and Development Program is a randomized clinical trial to test the efficacy of educational and family support services and pediatric follow-up offered in the first 3 years of life on reducing the incidence of developmental delay in low-birthweight (LBW), preterm infants in 8 clinical sites ( N = 985). Effects of the intervention on cognitive and behavior problem scores over the 3 years are examined. Significant intervention effects were seen on cognitive scores at 24 and 36 but not 12 months of age; effect sizes were similar at both ages. These effects persist when controlling for earlier cognitive scores. At 24 and 36 months, behavior problem scores for the intervention group were significantly lower than for the follow-up group; the intervention was more efficacious for children with higher initial behavior problem scores. Results are discussed in terms of timing and targeting of services for LBW and disadvantaged children.  相似文献   

14.
This study examines the relationships between neonatal sleep respiratory instability and infant development. A group of 122 full-term healthy infants was observed during a nap within the first and fourth weeks of life. During each nap, a continuous polygraphic recording was obtained of respiratory activity and extraocular movements. The relative frequency and average duration of apneic pauses (greater than or equal to 2 sec) in each testing session for an infant were employed to calculate a measure of respiratory instability (PSA4) previously found to be related to the occurrence of prolonged sleep apnea. 28 of the infants in this study were maintained at home on apnea monitors. The Bayley Scales of Infant Development were administered to each infant at approximately 9 months of age. Comparisons of infants with high versus low PSA4 values and of monitored versus unmonitored infants were not strongly distorted by imbalances in birth weight, sex, race, birth order, method of feeding, Sudden Infant Death Syndrome (SIDS) sibship, parental education, age at developmental assessment, and developmental tester. Those with increased respiratory instability (PSA4 greater than or equal to -0.04) within the first week of life averaged significantly lower in mental and psychomotor development. Utilization of home apnea monitors was not significantly associated with developmental scores.  相似文献   

15.
The present study documented later developmental outcome in a group of 29 failure-to-thrive (FTT) infants who received extended hospitalization in infancy as an intervention for their growth failure. All infants were seen at approximately 3 years of age and were given standardized assessments of intellectual and physical development. A standard interview documented demographic variables, health problems, placements subsequent to hospitalization and additional psychological and medical treatment. Infants were divided into three groups dependent on medical and treatment factors. Means and percentages of occurrence of outcome variables were compared through either one-way ANOVAS or single sample chi-square tests with post hoc analyses. Correlational analyses were used to understand the relationships between outcome and relevant demographic, medical, and treatment variables. In general, the infants manifest persistent intellectual delays at follow-up despite maintenance of weight gains achieved during early hospitalization. More than half the group suffered from chronic health problems. A large percentage of infants had been removed from parental custody at the time of follow-up. Several demographic, medical, and treatment factors bore moderate relationships to developmental outcome. Infants who achieved more optimal growth tended to be full-term at birth, later born and without a question of physical abuse in their social histories. Intellectual functioning was related only to parental and caretaker socioeconomic status. Infants placed in foster care were unlikely to return to their families of origin. The findings suggest the need for further investigation into the determinants and outcome of extended hospitalization as a treatment for FTT.  相似文献   

16.
This study explores individuals' experience of early intervention in two settings (the home and the child development center) and the effect of that experience on child and parental outcomes in the Infant Health and Development Program (IHDP). The IHDP was a randomized clinical trial designed to test the efficacy of educational and family support services on reducing developmental delays in low birth weight (LEW), premature infants (N = 985) during the first 3 years of life. This study focused on children in the intervention group who received at least one home visit and one day at the center each year (n = 296). Three approaches to measuring participants' experience of intervention were defined—number of contacts in the home and at the child care center (i.e., Exposure), number of activities presented per visit to the parent in the home or per day to the child at the center (i.e., Rate); and a combination of the parent's interest in the intervention activities in the home and the child's mastery of the intervention tasks taught at the center (i.e., Active Experience). More substantial contributions to both child IQ and the HOME scores at age 3 were found with the Active Experience approach than with the Exposure or the Rate approach, after controlling for initial background variables, family socioeconomic status, children's initial IQ, and parental cognitive ability. Further, a high level of Active Experience from both the parent and the child was associated with higher IQ scores at ages 1, 2, and 3 and higher HOME scores at age 3 than was found when only a high level of Active Experience from only the parent or the child, or neither, was involved. Implications for future intervention programs are discussed.  相似文献   

17.
This study tested predictions from economic and developmental theories that maternal time with an infant is important for mother-child relationships and children's development, using time-use diaries for mothers of 7- to 8-month-old infants from the National Institute of Child Health and Human Development Study of Early Child Care (N = 1,053). Employment reduced time with infants, but mothers compensated for some work time by decreasing time in other activities. With family and maternal characteristics controlled, time with infants predicted high Home Observation for Measurement of the Environment (HOME) scores and maternal sensitivity, but bore little relation to children's engagement with mothers, secure attachment, social behavior, or cognitive performance from 15 to 36 months. Mothers who spent more time at work had higher HOME scores. Maternal time with infants may reflect maternal characteristics that affect both time allocation and maternal behavior.  相似文献   

18.
280 Colombian infants at risk of malnutrition were randomly assigned to 1 of 4 experimental groups formed by the presence/absence of 2 interventions: (1) food supplementation for the entire family, from mid-pregnancy until the target child was 3 years old, and (2) a twice-weekly home-visiting program to promote cognitive development, from birth until age 3. All families received free medical care and were studied prospectively. At 3 years of age, children who had received food supplementation averaged 2.6 cm and 642 grams larger than controls. Home visiting and supplementation together reduced the number of children with severe growth retardation. 3 years after intervention (age 6), supplementation effects remained. Children in the home visit condition had become larger than controls, by 1.7 cm and 448 grams. The interactive effect to reduce stunting was marginally significant at this age, and the overall distribution of scores was improved. Other results suggest that changes in family functioning as well as biological mechanisms account for the observed pattern of results.  相似文献   

19.
OBJECTIVE: A cumulative risk model was used to examine the relationship among failure-to-thrive (FTT), maltreatment, and four aspects of children's development: cognitive performance (standardized testing), adaptive functioning at school, and classroom behavior (teacher report), and behavior at home (maternal report). METHOD: The sample included 193 6-year-old children and their families, recruited from pediatric clinics serving inner-city, low-income, primarily African-American families, who were part of a longitudinal investigation of child development and maltreatment. Four risk groups were formed based on their growth and maltreatment history: neither FTT nor Maltreatment, FTT Only, Maltreatment Only, and both FTT and Maltreatment. FTT was defined as a deceleration in weight gain (weight-for-age below the 5th percentile) prior to 25 months of age among children born at term with birth weight appropriate for gestational age. Maltreatment was defined as having at least one report to CPS for neglect, physical abuse and/or sexual abuse. RESULTS: Risk status was negatively associated with each of the four developmental outcomes. Children with a history of both FTT and maltreatment had more behavior problems and worse cognitive performance and school functioning than children with neither risk factor. Children with only one risk factor (either FTT or maltreatment) achieved intermediate scores. CONCLUSIONS: Findings support a cumulative risk model as being more detrimental to children's development than the presence of a single risk factor alone, consistent with theories linking the accumulation of environmental risks to negative consequences. These results underscore the importance of interventions to prevent both FTT and maltreatment during children's early years.  相似文献   

20.
S A Rose 《Child development》1983,54(5):1189-1198
This study investigated the effect of increasing familiarization time on the visual recognition memory of 6- and 12-month-old full-term and preterm infants. Infants were given trials in which they viewed a shape for either 10-, 15-, 20-, or 30-sec familiarization and were then tested for visual recognition memory using the paired comparison technique. While the older infants showed evidence of recognition memory after less familiarization time than the younger ones, at both ages preterms required considerably longer familiarization than full-terms. The pattern of performance replicates our earlier finding of developmental lags in the visual information processing of 6-month-old preterms and extends these findings to 12-month-olds. These results suggest that there are persistent differences between preterm and full-term infants throughout at least the first year of life in this very fundamental aspect of cognition.  相似文献   

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