We present first-grade, second-grade, and third-grade impacts for a first-grade intervention targeting the conceptual and procedural bases that support arithmetic. At-risk students (average age at pretest = 6.5) were randomly assigned to three conditions: a control group (n = 224) and two variants of the intervention (same conceptual instruction…

Adolescents are spending an unprecedented amount of time using digital technologies (especially mobile technologies), and there are concerns that adolescents' constant connectivity is associated with poor mental health, particularly among at-risk adolescents. Participants included 151 adolescents at risk for mental health problems (M[subscript…

The standardized, indicated school-based prevention program "Networks Against School Shootings" combines a threat assessment approach with a general model of prevention of emergency situations in schools through early intervention in student psychosocial crises and training teachers to recognize warning signs of targeted school violence.…

This study investigates heterogeneity in adolescents' trajectories of global self-esteem (GSE) and the relations between these trajectories and facets of the interpersonal, organizational, and instructional components of students' school life. Methodologically, this study illustrates the use of growth mixture analyses, and how to obtain…

Although infantile amnesia has been investigated for many years in adults, only recently has it been investigated in children. This study was a 2-year follow-up and extension of an earlier study. Children (4-13 years old) were asked initially and 2 years later for their earliest 3 memories. At follow-up, their age at the time of these memories…

Both adults and adolescents often conform their behavior and opinions to peer groups, even when they themselves know better. The current study investigated this phenomenon in 24 groups of 4 children between 4;2 and 4;9 years of age. Children often made their judgments conform to those of 3 peers, who had made obviously erroneous but unanimous…

While research suggests that working more than 20 hr weekly is associated with greater antisocial behavior among middle- and upper-class youth, some have argued that employment benefits at-risk youth and leads to desistance from crime among youthful offenders. This study investigates the relation between hours worked, school attendance, and…

This is the first prospective study to investigate psychosocial adjustment in male and female former child soldiers (ages 10-18; n = 156, 12% female). The study began in Sierra Leone in 2002 and was designed to examine both risk and protective factors in psychosocial adjustment. Over the 2-year period of follow-up, youth who had wounded or killed…

Negative attitudes toward black students found in earlier studies was not replicated here. (ST)

A follow-up investigation of 68 children 10 years of age who had been assessed originally at ages 4, 8, 13, and 27 months, did not reveal strong relations between infant variables (such as attentiveness, vocal excitability, irritability, or activity) and reflection-impulsivity, intelligence quotient, or reading ability at age 10. (JMB)

Twenty-two mothers whose physiologic responses to infant signals had been recorded at an earlier date were videotaped with their infants during a feeding session when the infant was 9 months of age. Infants' development of the object concept was assessed at 15 months. (JMB)

This study examined developmental outcome at 1 and 2 years in relation to the presence and severity of neonatal intraventricular hemorrhage. Intraventricular hemorrhage related to Bayley mental and motor scores and neurologic ratings at 1 year but not at 2 years. Significant associations were found between the 1- and 2-year measures but not…

Examines the continuity of behavioral adjustment from the preschool through elementary and junior high school years. Behavior checklist data were obtained from 541 children, ages 9 through 15, who had participated in a preschool epidemiological study. Analyses focused on the relationship between internalizing and externalizing behavior dimensions…

The purposes of this present study are (1) to follow the development of preterm as compared with that of full-term infants born to teenage v adult mothers belonging to a lower SES group; and (2) to assess the effects of an intervention provided for a subsample of the preterm infants born to teenage mothers. (Author/MP)