The development of the vocabulary schema was facilitated by the Advanced Distributed Learning (ADL) Initiative and developed by the xAPI Vocabulary Working Group. ADL would like to recognize the following experts for their participation in developing use cases and contributions to the group: Pankaj Agrawal, Kirby Bell, Jessie Chuang, Adam Cooper, Ingo Dahn, Tom De Nies, Russell Duhon, Diane Hillmann, Jonathan Kevan, Jason Lewis, Elf Pavlik, Jon Phipps, Mark Spivey, and Bruno Winck.
This companion vocabulary specification was also produced by ADL, and its contents reflect extensive discussion within the Working Group as a whole. The editors would like to recognize the considerable contributions and input provided by the following people: Ingo Dahn, Andrew Downes, and Russell Duhon.