This study investigates whether potential differences in the weight of out-of-school and in-school learning environments affect the acquisition of L2 English by teenagers in two geographical contexts, more and less English-rich, and with less and more linguistic distance to English, respectively. Participants were two groups of 14-15-year-olds,…

Substance use is a leading cause of preventable morbidity and mortality, and it is in large part why people in the U.S. have the highest probability among 17 high-income nations of dying by age 50. Substance use is also an important contributor to many social ills including child and spouse abuse, violence more generally, theft, suicide, and more;…

Although accurate assessment of bullying is essential to intervention planning and the evaluation of bullying prevention programs, assessment has been called the "Achilles' heel" of bullying research (Cornell, Sheras, & Cole, 2006). Problems have been cited about variations in definitions and time frames used, whether or not to…