companion paper 1. Overview. We welcome collaborations with outside investigators; indeed, some of COGA's most impactful papers have arisen through collaborations with the global community of researchers, such as the Psychiatric Genomics Consortium, 15 , 16 , 17 , 18 , 19 , 20 Externalizing Consortium, 21 and INIA. 22 A complete list of COGA publications can be found at cogastudy.org. COGA is also invested in supporting the development of early career investigators (see 1. Overview) and we encourage the participation of junior faculty in COGA; many of the studies detailed below have been initiated by junior investigators on the project.