Joel Runnels is a Postdoctoral Research Associate at the Center for the Philosophy of Freedom at the University of Arizona, and a Fulbright Specialist at the University of Ghana's Department of Linguistics/Ghanaian Sign Language Program.

You can learn more about Dr Andrew Foster below:

https://www.youtube.com/watch?v=nHHr6DYxRy0

You can find Joel Runnels' literature review of Foster below:

https://www.jstor.org/stable/26235342?seq=1