We examined the variation and heritability of DSM-IV nicotine withdrawal (NW) in adult and adolescent male and female twin cigarette smokers (who reported smoking 100 or more cigarettes lifetime). Telephone diagnostic interviews were completed with 3,112 Australian adult male and female smokers (53% women; age: 24-36) and 702 Missouri adolescent male and female smokers (59% girls; age: 15-21). ...

BACKGROUND Recent reports have suggested a rotational strength weakness in rotations to the concave side in patients with idiopathic scoliosis. There have been no studies presenting normative values of female adolescent trunk rotational strength to which a comparison of female adolescents with idiopathic scoliosis could be made. The purpose of this study was to determine trunk rotational streng...

PURPOSE Trust is an important aspect of interpersonal relationships, but little is known about adolescents' interpersonal trust. The aim of the present study was to examine the associations among parental monitoring, parent-adolescent communication, and adolescents' trust in their parents in China. METHODS Data in this study were collected as part of the cross-sectional study of children in C...

PURPOSE To study the age trend of family and peer influence on adolescent smoking behavior using a national sample. METHODS Adolescents (N = 6,900), ages 14 through 18 years, from the 1988-89 Teenage Attitudes and Practices Survey, were selected for analyses. Data collected included measures for smoking status of the adolescent and their family and peers. RESULTS Peer influence, such as the...

CONTEXT Low birth weight (LBW) predicts later-onset hypertension and diabetes mellitus. Its role as a predictor of depression is unclear. OBJECTIVES To examine whether LBW predicts depression in male and female children and adolescents and to compare the following 2 hypotheses: Low birth weight is one among several perinatal, childhood, and adolescent risk factors for depression (biopsychosoc...

Animals shipped from commercial suppliers to laboratories are exposed to a wide variety of stressors. Female C57Bl6/J mice shipped during the peripubertal/adolescent period (6 wk old) display lower levels of female sexual behavior in response to estradiol and progesterone injections after ovariectomy when tested in adulthood than female mice shipped in adulthood (12 wk old). These shipping-indu...

Adolescent mental health is key for later well-being. Yet, causal evidence on environmental drivers of adolescent scant. We study how an important classroom feature—the gender composition in compulsory-school—affects health. use Swedish administrative data (N = 576,285) to link variation across classrooms within cohorts find that a higher share female peers increases the incidence diagnoses, pa...

Our objective was to examine the relationship between pregnancy desire among female adolescents and their perception of desire for pregnancy in their male partners. This is an observational cross-sectional study which examined 92 surveys administered to adolescent women between the ages of 14 to 19 years at two obstetrical care services serving a population from limited socioeconomic background...

OBJECTIVE To investigate the physician sex preference of male adolescents and to explore the factors that may moderate this preference. DESIGN Anonymous survey. SETTING An adolescent clinic associated with a large pediatric hospital centrally located within a metropolitan Midwestern city. PARTICIPANTS The 67 male adolescent patients in the convenience sample ranged in age from 10 to 18 ye...

The purpose of the study is to determine whether the various aspects of the craniofacial complex exhibit female adolescent growth spurts. Multilevel polynomial models were used to estimate the growth curves of a mixed-longitudinal sample of 111 untreated females 10-15 years of age. To evaluate the horizontal and vertical movements of the individual landmarks relative to stable structures, the t...