During the last 15-20 years, a significant amount of research has focused on the issue of choice among people affected by severe-profound developmental disabilities. Studies have been directed at (a) assessing the ability of those people to choose between different options and express preferences that could be used for reinforcement or occupational purposes, (b) building choice opportunities within those people's daily situations, and (c) evaluating the possible effects of choice making on those people's performance and behavior. This paper reviews the aforementioned studies and comments on the main findings and related questions.