How do adult learning researchers treat the question of disability? Based on a keyword search, I estimnate that between 2003 and 2012, the International Journal of Lifelong Education published four papers on disability, Adult Education Quarterly published three and Studies in the Education of Adults published none.
Moreover, two of the papers in IJLE focused on the experiences of practitioners, and one in AEQ reported on a study of disability activists as activists. Admittedly, some authors will cover disability as one of several forms of exclusion or sources of identity, and I have not tried to count those.
This leaves a total of four papers which focused on the experiences of disabled learners, in three eminent journals in the course of a decade. For a research community that prides itself on its interest in equity and justice, we clearly have a long way to go.