Positive youth development through sport: What works, under what circumstances, for whom? And what's next?

The purpose of this invited article was to address the questions of "what works, under what circumstances, for whom?" through the lens of PYD through sport (PYD-Sport). The article then goes on to consider "what's next?" for the further advancement of the field. First, to provide some context, the historical origins of PYD and PYD-Sport are briefly reviewed. Next, the article showcases select examples of relevant research addressing the questions of "what works, under what circumstances, for whom?" Finally, the section titled "what's next?" focuses on four matters that may help advance PYD-Sport research and create more knowledge about the ways in which youth sport can be delivered to foster positive development outcomes among its participants, namely; (1) conceptual clarity, (2) the underrepresentation of women and girls, (3) enhancing the diversity of PYD-Sport research, and (4) the promise of transdisciplinary inquiry.