Study objective: To understand the context for tobacco smoking in young adolescents, estimating the effects of individual, family, social, and school related factors. Design: Cross sectional analysis ...

When contextual features of test-taking environments differentially affect item responding for different test-takers and these features vary across test administrations, they may cause differential ...

This is a preview. Log in through your library . Abstract Scientific journals must deal with the following questions concerning the predictive validity of editorial decisions. Is the best scientific ...