Background: Randomized prevention trials provide a unique opportunity to test hypotheses about the interaction of genetic predispositions with contextual processes to create variations in phenotypes over time. Methods: Using two longitudinal, randomized prevention trials, molecular genetic and alcohol use outcome data were gathered from more than…

The purpose of this study was to determine factors that influence middle and high school students' use of public libraries, the type of materials they use, and the frequency with which students use public libraries compared to the students' use of school library media centers. A questionnaire was used as the data gathering instrument. It was…