JRA seeks to publish innovative and rigorous research that advances understanding of adolescent development in diverse communities around the world. The journal considers manuscripts from the wide range of topics relevant to adolescent development, using rigorous quantitative or qualitative methodologies. We will consider samples of early adolescence (10-12), middle adolescence (13-15), late adolescence (16-18), and young adulthood (19-25). However, samples of university students (typically aged about 18-22 years) need a strong justification that the sample is not one of convenience. Manuscripts should advance understanding of adolescent development, rather than merely study a phenomenon with an adolescent sample, and should therefore be grounded in developmental theory, prior developmental research, and contexts of development. There are no exclusions of particular methodologies, though studies including a diverse and representative sample, with valid and multiple information sources, and/or with best practice quantitative or qualitative analysis strategies are preferred. Manuscripts should clearly articulate the advances in understanding adolescent development and the applications for improving the lives of adolescents.