School performance and IQ-test scores at age 13 as related to birth weight and gestational age

The cohort in the present longitudinal research program consisted of 873 children in an entire school grade, in a Swedish community. The present results showed a main effect of birth weight; low birth weight (LBW) children had lower school performance and intelligence-test (IQ) scores at age 13 than did normal birth weight (NBW) children irrespective of parental SES. Second, there was no significant main effect of gestational age (GA) on scholastic performance and IQ-test scores. Third, there was a significant main effect of the combination of birth weight and GA on scholastic performance and IQ-test scores. The LBW children born at term (38-40 pregnancy weeks; pw) had significantly lower scores and school grades as compared to the control group while the LBW children born with short gestational age (34-37 pw) and with very short gestational age (less than 34 pw) had significantly lower scores and marks in fewer areas of academic attainment.     

Sex Differences in the Pathway from Low Birth Weight to Inattention/hyperactivity

Inattention/hyperactivity is a childhood outcome of low birth weight. However, the mechanisms by which low birth weight leads to inattention/hyperactivity are unclear. This study examined arousal, activation, motor speed, and motor coordination as possible mechanisms, attending to sex differences. 823 children (400 males) from Detroit and surrounding suburbs were assessed with the Child Behavior Checklist and the Teacher Report Form and completed experimental tasks to assess vigilance and activation (Continuous Performance Test signal detection parameters) and motor output speed and control (Grooved Pegboard) at 6 years of age. The relationship between birth weight and inattention/hyperactivity was slightly, but not significantly, stronger for boys than for girls. Arousal, motor speed, and motor coordination significantly partially mediated the relationship between birth weight and inattention/hyperactivity for boys and girls. Moderated mediation was found for the pathway between motor coordination and inattention/hyperactivity such that this relationship was stronger for boys than for girls. Sex differences in the associated features of attention symptoms may reflect partially distinct etiological pathways.     

Prevalence of weight reducing and weight gaining in adolescent girls and boys

This is a survey of the prevalence of weight reducing and weight gaining in high school children. Our sample of 1,373 high school girls and boys was geographically, racially, and economically diverse. On the day of the survey, 63% of the girls and 16.2% of the boys reported being on weight reducing regimens; 9.1% of the girls and 28.4% of the boys were trying to gain weight. Most female reducers and male gainers were already normal weight. Compared to other racial groups, whites and Hispanics were more likely to be reducing, whereas blacks were more likely to be gaining. Exercise and moderate caloric reduction were most popular for weight reducing, and a small but significant number were regularly using fasting, vomiting, laxatives, and appetite suppressants. The direction of weight modification for girls and boys conformed to stereotyped physical ideals. The rate of weight reducing in female high school adolescents has increased significantly since similar surveys of American youths 20 years ago.     

School competence and emotional/behavioral problems among Norwegian school children as rated by teachers on the Teacher Report Form

Of 1,409 eligible children aged 6-13 years in grades 1 to 7 who were randomly selected from a national sample of Norwegian schools, 858 participated in the present study (60.9%). The sample was stratified by school centrality, region and size of grade cohort. The teachers assessed their children's academic performance, adaptive school functioning, and levels of emotional/behavioral problems using the 2001 version of the Teacher Report Form (TRF). Only one child was randomly selected from each grade cohort. Girls had significantly higher scores than boys in the Working Hard, Appropriate Behavior, Learning, and Total Adaptive Functioning domains. For girls, only the Working Hard domain was of medium effect size. While boys had significantly higher scores than girls on Attention, Thought Problems, Rule-Breaking, Aggression, Externalizing Problems and Total problems, only Attention Problems showed a medium effect size. Significant sex by age interaction effects were also found for Rule-Breaking, Externalizing, Internalizing, Anxious-Depressed and Total Problems. In all these comparisons, 10-13-year-old boys had significantly higher scores than 6-9-year olds, while girls had similar problem levels across age groups. Our mean Total Problems score (17.2) was lower than the grand mean (21.6) reported in a multi-country comparison but higher than in another Norwegian large-scale survey. Overall, our findings indicate that teachers in Scandinavia report, just as do parents, relatively low levels of emotional/behavioral problems among school-aged children.     

School adjustment in adolescence for previously rejected,average and popular children

Background: Earlier research shows that peer‐rejected children are at risk of a wide range of subsequent adjustment difficulties in different social contexts, as, for example, in school. Aims: This study investigated the academic performance and school adjustment in adolescence of children with different peer status in middle childhood. Sample: Age 15 boys and girls (N=90), who at age 10 and 11 were sociometrically rejected, popular, or of average popularity in their school class. Methods: School marks, intelligence scales, and self‐reports were used as adjustment measures. School dropout rate for boys was also included. Results: The academic performance and intelligence level of rejected boys and girls were short of the standards of children from the other status groups, while the scores of popular boys and girls were of superior standard. There were some slight indications that rejected girls (but not rejected boys) had negative attitudes towards school and schoolwork, and that popular girls had positive school attitudes. The school dropout rate of rejected boys was much higher than that of other boys. Conclusions: The results show that the rejected children are a risk group for school problems also over a long period of time. Considering the important developmental aspects of the adolescence years, there appear to be good reasons, therefore, to worry about the future adulthood adjustment of peer‐rejected children.     

Language Difficulty at School Entry and the Trajectories of Hyperactivity-Inattention Problems from Ages 4 to 11: Evidence from a Population-Representative Cohort Study

Latent growth curve modelling was used to contrast the developmental trajectories of hyperactivity-inattention (H-I) problems across childhood for children with a language difficulty at the start of school and those with typical language and to examine if the presence of a language difficulty moderates the associations of child, parent and peer predictors with these trajectories. Unconditional and language-status conditional latent growth curves of H-I problems were estimated for a large nationally representative cohort of children, comprising 1627 boys (280 - language difficulty) and 1609 girls (159 - language difficulty) measured at age 4 to 5, 6 to 7, 8 to 9 and 10 to 11. Multiple regression tested interaction between language status and predictors of the level and slope of the trajectory of H-I problems. On average, boy’s H-I behaviours showed temporal stability while for girls H-I decreased over time with a slower rate of decrease with age. For both boys and girls, the levels of H-I problems were persistently elevated for those with a language difficulty compared to their peers. Neither the shape nor rate of change of H-I problems were associated with language status. Child sociability predicted the rate of growth in H-I for boys with a language difficulty but not for other boys. Child prosocial behaviours and parental psychological distress predicted the rate of growth in H-I for girls with a language difficulty but not for other girls. Parental hostility was associated with the rate of growth only for boys with typical language. The findings indicate that having a language difficulty at school entry is associated with persistently higher levels of H-I problems across childhood and moderates the rate of their growth in some circumstances.     

Physical fitness of South African primary school children, 6 to 13 years of age: discovery vitality health of the nation study

Basic physical fitness was measured using 8 different measures for 10,295 South African children and youths (5,611 boys, 4,684 girls) ages 6 to 13 years. These measurements included height, weight, Body Mass Index, standing long jump, shuttle run, sit-and-reach, sit-up (EUROFIT testing battery), and cricket ball throw scores. Due to the effects of earlier apartheid laws on separating communities, it was hypothesized that scores for different ethnic groups may differ. Therefore, in addition to the calculation of basic norms and sex differences, ethnic differences were also tested. Height and weight, relative to age, were different between the various ethnic groups (Black, White, and Mixed ancestry) for boys, with Black boys being shorter and lighter than White boys. There were no differences in sit-and-reach flexibility scores between the groups. With the exception of the cricket ball throw for girls, White children had higher scores in most tests. Although not significantly different from the White children, in the majority of cases, the children of mixed ancestral origin had scores that ranged between the other two ethnic groups. These results suggest a need for encouraging fitness in school children, and the reintroduction of formal physical education into the South African school curriculum, especially into schools in which Black children predominate.     

Changes in 10‐year‐old children's body esteem: A time‐lag study between 2000 and 2010

This time‐lag study examined if there has been any changes in body esteem over a 10‐year period for 10‐year old children in Gothenburg, Sweden. Two cohorts of children, one in year 2000 and one in 2010, answered the same questionnaire about body esteem. A total of 960 children, 515 girls and 445 boys, participated in the first wave in 2000 and a total of 342 children, 171 girls and 171 boys participated in the second wave in 2010. The results showed a general stability in levels of body esteem for both girls and boys over the past 10 years. The gender differences, with boys being more satisfied with their appearance and weight compared to girls also seems to be stable over the years. In addition, the results also showed a somewhat positive development among the overweight girls with enhanced body esteem for the overweight girls compared to the non‐overweight girls during the ten years studied. Unfortunately, the same pattern was not found for overweight boys. For them the discrepancy in body esteem compared to non‐overweight boys, with the overweight boys being more dissatisfied, found in 2000 remained in 2010.     

Peer relationships in ADDH and normal children: A developmental analysis of peer and teacher ratings

Peer and teacher perceptions of younger and older ADDH and normal children were compared. Peer nominations on the Pupil Evaluation Inventory revealed that ADDH children received more nominations on the Aggression factor and fewer on the Likability factor. ADDH boys received more nominations on the Withdrawal factor. Generally, older children received fewer nominations, but age did not interact with diagnosis; that is, younger and older ADDH children were perceived by peers as equally deviant. Discriminant analyses showed that peer ratings were useful in discriminating between ADDH and normal boys, but not between ADDH and normal girls. Teacher ratings of peer behavior suggested that older ADDH girls were perceived as less disturbed than younger girls. However, teacher ratings of boys revealed no age by diagnosis interactions. Low to moderate correlations were found between peer and teacher ratings of ADDH boys, and the pattern of relationship varied with age.During the writing of this report, Charlotte Johnston was supported by a Sir James Lougheed Fellowship, Alberta Heritage Scholarship Fund.     

Social engagement in adolescence moderates the association between weight status and body image

This study examined whether the association between adolescent weight status and body image varies by social engagement. A nationally representative sample of 6909 students in grades 6-10 completed the 2006 HBSC survey. Separate linear regressions for boys and girls, controlling for age, race/ethnicity and socioeconomic status, were conducted with an interaction term (weight status×social engagement). Adolescents' overweight/obese status was related to body dissatisfaction. Social engagement moderated the relationship between weight status and body image for girls but not for boys. Overweight/obese boys had more body dissatisfaction compared to their normal/underweight peers, regardless of their social engagement. However, overweight/obese girls with more social engagement were more likely to have body satisfaction compared to overweight/obese girls with less social engagement. Encouraging adolescent girls to develop healthy relationships with peers may prevent them from developing body dissatisfaction.     

Body-esteem in Swedish 10-year-old children

This study examined body-esteem in 10-yr.-old children. The study group comprised 960 schoolchildren, 515 girls and 445 boys (M age= 10.4, SD=0.5). Analysis showed that girls who were overweight had more negative body-esteem on all dimensions (weight, appearance, and attribution). The overweight boys had more negative perceptions on only two dimensions (weight and appearance). Twice as many girls perceived themselves as too fat (20%) as too skinny (10%). Of the girls who perceived themselves as fat, only 31% were overweight; similarly only 33% of the boys who perceived themselves as fat were overweight. The children's perception of their weight seemed as important as their actual weight and was associated with their body-esteem in the same way. Although few children had dieted (7% of the girls and 5% of the boys), the ones who had dieted had more negative body-esteem than children who had not dieted.     

广西中小学儿童受欺负现象调查研究

运用自编问卷在广西5所中小学选取792名中小学儿童进行调查,考察中小学儿童在学校和家庭中受同学、老师和家长欺负的比率及受欺负方式的特点。结果发现:1、中小学中存在普遍的受欺负现象,随着年龄的增长,儿童受欺负的比率呈下降趋势;但受教师和家长欺负到初中后反而呈上升趋势。2、儿童易受同伴的直接言语欺负;男生比女生易受同学直接身体欺负。3、儿童易受家长的直接言语欺负;小学阶段男生比女生易受家长的间接欺负;初中阶段女生比男生易受家长的直接身体欺负。4、教师对儿童较多使用间接欺负和直接身体欺负。小学阶段男生比女生易受教师的直接言语欺负;初中阶段男生比女生易受教师的直接身体欺负。     

Personality antecedents of depressive tendencies in 18-year-olds: a prospective study

Antecedents of depressive tendencies at age 18 were longitudinally evaluated using data from nursery school through high school. Depression was measured by CES-D scores from which the contribution of self-reported anxiety was partialed. As early as age 7, boys who subsequently acknowledged dysthymia were aggressive, self-aggrandizing, and undercontrolled whereas girls with later depressive tendencies were intropunitive, oversocialized, and overcontrolling. Similar gender differences were observed in pre- and early adolescence. At age 14, dysthymic boys were more likely to use both marijuana and harder drugs whereas dysthymic girls showed no tendency to use marijuana but did show a marked tendency to experiment with hard drugs. These girls also displayed low self-esteem. Preschool IQ correlated positively with dysthymia in girls and negatively in boys. The psychodynamics of gender differences in depressive affect were discussed.     

Early indications of delayed cognitive development in preschool children born very preterm: evidence from domain‐general and domain‐specific tasks

Cognitive impairment often follows preterm birth but its early underlying nature is not well understood. We used a novel approach by investigating the development of colour cognition in 54 very preterm children born ?30 weeks gestational age without severe neurosensory impairment and 37 age‐matched term‐born controls, aged 2–5 years. Quantitative and qualitative differences in the development of colour cognition are well charted throughout the preschool years, enabling delayed from deviant development to be determined. Standardized domain‐general and experimental colour‐specific tests of language, attention, and memory were employed. Very preterm children showed significantly depressed language than term controls, with very preterm group girls significantly outperforming boys. Very preterm children also showed poorer attention and memory than term controls, but not significantly so. Importantly, colour‐specific tests showed qualitatively similar performance, but for naming and executive planning quantitatively poorer performance, across groups, indicating typical but delayed development. Hence, even before school entry, compared with term‐born peers, very preterm children show delayed development of cognitive processes that underpin later scholastic abilities, but the nature by which these processes operate appears to be typical of term children. If left untreated these early developmental delays may underpin later deviations from the typical developmental trajectory. Copyright © 2010 John Wiley & Sons, Ltd.     

Growth rates in running speed and vertical jumping by boys and girls ages 11-13

This study examined growth rates in running speed and vertical jump among middle school children. 45 boys and 31 girls ages 11-13 years were tested on running speed and vertical jump three times (September, February, and May) during the school year. Hierarchical linear modeling was used to estimate initial status and growth rates for the entire sample (base model) and the association of running and vertical jump with height, weight, and sex (conditional model). Positive overall growth rates were found for both running speed and vertical jump. Increased heightand weight at the time of measurement were not significantly associated with growth rate for running. The growth rate for vertical jump was positively associated with height but unrelated to increased weight. Boys showed steeper growth rates than girls in jumping. No sex differences were found in running speed for either initial status or in growth rate. Furthermore, these results suggest highly variable rates of physical maturation but no general period of 'adolescent awkwardness'.     

Early school competence: the roles of sex-segregated play and effortful control

The purpose of this research was to examine the role that young children's same-sex peer interactions play in influencing early school competence. The authors also examined the degree to which effortful control (EC) moderated these relations. The same-sex play preferences of 98 young children (50 boys and 48 girls; mean age = 54.77 months) were observed during the fall semester. At the end of the fall semester, one set of teachers reported on children's EC, and at the end of the following springsemester, another set reported on children's school competence (social, academic, and perceptual-motor). Results revealed that EC moderated the relations of children's same-sex play to their school competence. These patterns differed for boys and girls such that same-sex play was positively related to school outcomes for boys high in EC and for girls low in EC.     

Very Low Birth Weight and Attention Deficit/Hyperactivity Disorder

It is well recognized that reaction time performance of term-born children with a normal birth weight (NBW > 2500 g) who fulfill the DSM-IV criteria for attention deficit/hyperactivity disorder (ADHD) in the primary school age is sensitive for the presentation rate of stimuli. They have been found to perform more poorly in conditions of relatively slow event rates as compared with fast event rates. The purpose of the current study was to explore whether reaction time performance of children with very low birth weight (VLBW < 1500 g) with or without ADHD showed the same sensitivity for the factor presentation rate of stimuli compared to children with a normal birth weight plus ADHD. To this end, reaction time performance of four groups of children was compared on a Go/No-Go test with a fast presentation rate of 1 second and a slow presentation rate of 6 seconds. Groups were: children with VLBW plus ADHD, children with VLBW only, children born full term with normal birth weight (NBW >2500 g) plus ADHD, and children born full term without ADHD (the control group). Findings indicated that, compared to the non-ADHD groups, the groups with ADHD (NBW and VLBW) showed a more dramatic decline in their reaction time performance in the slow condition: a state regulation deficit. In addition, both groups showed a response inhibition deficit. No difference was found in reaction time performance between the groups of children with VLBW only and the control group.     

Gender Differences and Cognitive Correlates of Mathematical Skills in School-Aged Children

Published information concerning the influence of gender on mathematical ability tests has been controversial. The present study examines the performance of school-aged boys and girls from two age groups on several mathematical tasks and analyzes the predictive value of a verbal fluency test and a spatial test on those mathematical tasks. More specifically, our research attempts to answer the following two questions: (1) Are gender differences in mathematical test performance among children interrelated with age and (2) do verbal and spatial nonmathematical tests mediate gender effects on mathematical test performance? Two hundred and seventy-eight 7- to 10-year-old children and 248 13- to 16-year-olds were selected from schools in Colombia and Mexico (231 boys and 295 girls). The age effect was found to be significant for all measures, with scores improving with age. Results showed that boys and girls in both age groups scored similarly in most subtests, but that differences emerged in the performance of mental mathematical operations and in resolving arithmetical problems. In the latter – but not in mental math – older boys outperformed older girls, whereas no gender differences were observed in the younger groups. After controlling for age, it was found that the spatial test was, indeed, a significant mediator of gender effects, while the verbal task was not.     

Depression, suicide ideation, and aggression among high school students whose parents are divorced and use alcohol at home.

106 high school students from a small rural high school completed the Children of Alcoholics Scale, Zaks and Walters' Aggression Scale, Beck Depression Scale, and a modified version of the Beck Scale of Suicide Ideation. Analyses of variance showed boys were not experiencing suicide ideation any more than girls; suicide ideation was similar across the four grades, but on aggression alcohol-dependent boys scored significantly higher than girls, and in Grade 9 boys' scores were significantly higher than those in Grade 10. The sophomores' scores on alcohol dependency were significantly lower than the freshmen's scores. Boys and children from divorced homes had higher scores on aggression than girls and children from nondivorced homes. Children from homes in which alcohol was used had higher depression scores than children from nonalcoholic homes. Freshman girls and sophomore boys had higher depression scores than senior boys and girls. A Pearson r of 0.28 between scores on alcohol dependency and suicide ideation was significant, but research is needed to understand better the associations of thoughts of suicide and drug-alcohol dependency among these high school students so strategies for prevention and intervention can be focused.