Public schools across the United States are educating an increasing number and diversity of immigrant students. Unfortunately, little is known about their performance relative to native-born students and the extent to which the "nativity gap" might be explained by school and demographic characteristics. This article takes a step toward…

Background: Despite an expanding epidemiological evidence base, uncertainties remain over key aspects of the epidemiology of the "antisocial" disorders in childhood and adolescence. Methods: We used cross-sectional data on a nationally representative sample of 10,438 5-15-year-olds drawn from the 1999 British Child Mental Health Survey…

Aims: To examine the relationship between failure to thrive in preterm and term infants and postnatal depression in their mothers. Method: In a whole population birth cohort of 12,391 infants (excluding those born after term or with major congenital abnormalities) failure to thrive over the first nine months was identified using a conditional…

We present a developmental model that describes normal peer relations and highlights processes that underlie the emergence of problems with peers in childhood. We propose that children's relationships with peers begin in the first years of life, with stable individual differences and preferences for particular peers emerging by three years of age.…

Non-word repetition, in which participants hear and repeat unfamiliar verbal stimuli, is thought to provide a particularly sensitive measure of verbal short-term memory capacity. However, performance on this task can also be constrained by hearing and speech production skills, and by an individuals' linguistic knowledge. This study examined real…

Over the last 15 years, the role of emotions in children's peer relations has received greater attention. The purpose of the meta-analytic review was to determine the magnitude of the relation between negative emotionality (NE) and positive emotionality (PE) and social status. Based on 54 independent samples, the overall effect size for the…

The present study compared the behavioral correlates of sociometric popularity status and consensual popularity status among a large group of children (N = 778) in their first year of secondary school. By means of self-report and classmates' nomination procedures, the relative contribution of the two types of popularity to peer role strain and…

This article reports the findings from two studies. In the first, 158 students of all ages and classifications completed demographic forms, the Sixteen Personality Factor Questionnaire (Cattel, Cattel, & Cattel, 1993), and the University Student Lawbreaking Scale. In the second study, 154 freshmen, ages 17 to 19, completed the same forms. The…

This study investigated the role of concurrent musical parts in pitching ability in sight-singing, concentrating on the effects of melodic and harmonic coherence. Twenty-two experienced singers sang their part twice in each of four novel chorales. The chorales contained either original or altered melody and original (tonal) or altered (atonal)…

A sample of 10,153 churchgoing young people between the ages of 8 and 14 years completed the Scale of Attitude toward Church, together with a range of other indices. The data demonstrated that even among churchgoing young people: attitude toward church became less positive between the ages of 8 and 14; girls held a more positive attitude toward…

While a negative effect of ability grouping on the achievement of students assigned to lower ability groups has been noted frequently, no empirical research has looked at the effects on academic achievement of moving a student from one ability group level to a higher or lower group. In this paper, I report results of an empirical study that…

The aim of this study was to evaluate the role of short-term memory and attention in time estimation. For this purpose we studied prospective time verbal estimation in 21 patients with Alzheimer's disease (AD), and compared their performance with that of 21 matched normal controls in two different conditions: during a digit span task and during an…

An emerging body of literature points to the prominent role of the frontal lobes in the retrieval of verbs, whereas production of common and proper nouns arguably is mediated primarily by posterior and anterior temporal regions, respectively. Although the majority of studies examining the neuroanatomic distinctions between verb and noun retrieval…

Acquiring proficiency in different discourse genres involves an awareness of which syntactic structures are the most appropriate to the communicative context and purpose. This article examines two scientific research genres--conference proceedings articles and conference presentations--and compares the syntactic behaviour of a group of native…

The performance of methods for detecting publication bias in meta-analysis was evaluated using Monte Carlo methods. Four methods of bias detection were investigated: Begg's rank correlation, Egger's regression, funnel plot regression, and trim and fill. Five factors were included in the simulation design: number of primary studies in each…