This symposium will track current developments in the study of stuttering, the fruit of recent collaborations among researchers in the fields of genetics, speech motor control, and language processing. Until the past decade, much of the research into this common yet poorly understood communication disorder tended to be narrowly focused on accounts within a single discipline, from psychoanalysis to learning theory to articulatory control to hemispheric asymmetry. In this symposium, we will provide examples of the cross-disciplinary research that is changing consensus on the probable basis for stuttering. Recent advances in genetics, brain imaging, and speech motor control will be discussed in terms of their ramifications for better understanding this elusive disorder as well as treating it more effectively.