Background: The proportion of adolescents experiencing unwanted pregnancy and abortion caused by the premature initiation of sexual intercourse is increasing at an alarming rate in Korea. This study aimed at developing a theoretical model for identifying individual and environmental risk factors affecting the initiation of sexual intercourse by…

This study examined the impact of cooperative learning activities on student achievement and attitudes in large-enrollment (greater than 250) introductory biology classes. We found that students taught using a cooperative learning approach showed greater improvement in their knowledge of course material compared with students taught using a…

This study aimed to assess associations between school HIV education and protective sexual behaviors and sexually transmitted disease (STD)/HIV diagnosis with a representative sample of male and female high school students. Data from male and female adolescent participants in the 1999, 2001 and 2003 Massachusetts Youth Risk Behavior Survey (n =…

In this article we report assessment results from two studies in an ongoing design experiment intended to provide a single school system with a sequence of secondary school level (ages 14-18) computer technology courses. In our first study, we share data on students' learning as a function of the required introductory course and their pre-course…

Cross-cultural differences in emotional expressions following disappointment were examined in 59 Chinese American (CA) and 58 European American (EA) children. Children aged four or seven participated in a disappointing gift situation. Dimensions of expressive behaviors following disappointment were coded and included positive, negative, social…

Theories of positive youth development (PYD) regard such development as bases of both community contributions and lessened likelihood of risk/problem behaviors. Using data from the 4-H Study of PYD, we tested these expectations by examining if PYD in Grade 5 predicted both youth contributions and risk behaviors and depression in Grade 6. Results…

Studies of reactions to nuclear facilities have found consistent male/female differences, but the underlying reasons have never been well-clarified. The most common expectations involve traditional roles--with men focusing more on economic concerns and with women (especially mothers) being more concerned about family safety/health. Still, with…

Objective: This study investigates attributional styles and psychosocial functioning of men and women with ADHD identified in adulthood to inform practice issues. Method: One hundred and eighty adults participate: 52 females with ADHD, 37 males with ADHD, 51 female controls, and 40 male controls are administered questionnaires broadly assessing…

Objective: We evaluated correlates of the diagnosis of ADHD in youth by informant source. Method: Ninety-four pairs of mother reports and youth self-reports on ADHD were independently assessed, using diagnostic interviews from a large study of youth of both genders with and without ADHD. Comparisons were made on measures of interpersonal, school,…

This article explores the empirical validity of the Social Interactionist (SI) perspective as an explanation of violent victimization. An additional goal is to explain why early puberty among adolescents is connected to violent victimization. Using SI, we theorize that early puberty creates unusually high levels of distress for adolescents (more…

This study examines program elements related to reductions in drug use and crime among Drug Treatment Courts (DTC) participants as well as theoretical mechanisms--increased social controls and improved perceptions of procedural justice--expected to mediate the effects of DTC on these outcomes. Data are from 157 research participants interviewed…

This study of 89 Flemish high-school students' grades for L1 (Dutch), L2 (French), L3 (English) and L4 (German) investigates the effects of three higher-level personality dimensions (psychoticism, extraversion, neuroticism), one lower-level personality dimension (foreign language anxiety) and sociobiographical variables (gender, social class) on…

This paper examines how young people living in a violent neighbourhood construct understandings about danger, violence and safety. Reporting findings from a qualitative study that investigated these issues with 8-14 year olds in a South African neighbourhood, the paper identifies how young people attempted to stay safe through reliance on adult…

Empirical research evaluating the effectiveness of learning objects is noticeably absent. No formal research has been done on the use of learning objects in secondary schools. The purpose of this study was to evaluate the use of learning objects by high school students. The evaluation metric used to assess benefits and quality of learning objects…

This paper shows how cultural models mediate children's "Discourse about reading" (in Gee's sense), which is considered as a boundary object between the community and school. An empirical case study of the stories of 7- and 8-year-old children, in conjunction with classroom ethnography show gendered positioning in a Discourse about reading, which…