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Direct linkHarden, Kathryn P.; Mendle, Jane – Child Development, 2011
Academic achievement and cognitive ability have been shown to predict later age at first sexual intercourse. Using a sample of 536 same-sex twin pairs who were followed longitudinally from adolescence to early adulthood, this study tested whether relations between intelligence, academic achievement, and age at first sex were due to unmeasured…
Descriptors: Intelligence Quotient, Twins, Academic Achievement, Genetics
Mendle, Jane; Harden, K. Paige; Turkheimer, Eric; Van Hulle, Carol A.; D'Onofrio, Brian M.; Brooks-Gunn, Jeanne; Rodgers, Joseph L.; Emery, Robert E.; Lahey, Benjamin B. – Child Development, 2009
Children raised without a biological father in the household have earlier average ages of first sexual intercourse than children raised in father-present households. Competing theoretical perspectives have attributed this either to effects of father absence on socialization and physical maturation or to nonrandom selection of children predisposed…
Descriptors: Fatherless Family, Family Structure, Sexuality, Fathers
Guerra, Nancy G.; Williams, Kirk R.; Sadek, Shelly – Child Development, 2011
In the present study, quantitative and qualitative data are presented to examine individual and contextual predictors of bullying and victimization and how they vary by age and gender. Two waves of survey data were collected from 2,678 elementary, middle, and high school youth attending 59 schools. In addition, 14 focus groups were conducted with…
Descriptors: Student Attitudes, Bullying, Focus Groups, Sexuality
Ellis, Bruce J.; Essex, Marilyn J. – Child Development, 2007
Life history theorists have proposed that humans have evolved to be sensitive to specific features of early childhood environments and that exposure to different environments biases children toward development of different reproductive strategies, including differential pubertal timing. The current research provides a longitudinal test of this…
Descriptors: Environmental Influences, Metabolism, Adolescent Development, Body Composition
Peer reviewedDornbusch, Sanford M.; And Others – Child Development, 1981
National Health Survey data of 12- to 17-year-olds were used to determine links between dating behavior and level of sexual maturation as well as age. Analyses indicated that individual levels of sexual maturation add very little to the explained variance in dating after age has been taken into account. (Author/DB)
Descriptors: Adolescents, Age Differences, Biological Influences, Children
Peer reviewedBryant, Brenda K. – Child Development, 1982
Describes the development and validation of an index of empathy for use with children and adolescents. Fifty-six first-graders, 115 fourth graders, and 87 seventh graders were studied. (Author/RH)
Descriptors: Adolescents, Affective Measures, Age Differences, Children
Peer reviewedJadack, Rosemary A.; And Others – Child Development, 1995
Using hypothetical scenarios in which sexually transmitted diseases (STDs) can be transmitted, college freshmen and seniors were asked to explain why they believed the characters should or should nor engage in risky behaviors. Results indicated that seniors had a significantly higher stage of moral reasoning than the freshmen when responding to…
Descriptors: Age Differences, College Students, Higher Education, Moral Development
