 Intervention and generalization sessions will follow an overlapping ABAB or BABA format, with the first day of each phase being an overlap day. Participants will be randomly assigned to begin the intervention either with an A or B phase. On overlap days, the researchers will collect measures on all six intervention and generalization activities, with three being performed during a fifteen-minute morning session and three being performed during a fifteen-minute afternoon session. For participants in the A phase, the researchers will collect measures two times daily for each of the subsequent four days on the generative naming and exercise machine activities performed as independent tasks; for participants in the B phase, the researchers will collect measures two times daily for each of the subsequent four days on the generative naming and exercise machine activities performed as simultaneous tasks. A phase sessions will last ten minutes each, and B phase sessions will last five minutes each. The cycle of A and B phases will repeat throughout a participants inpatient stay at QLI. A QLI physical therapist will be present to monitor safety during performance of physical activities. The researchers will audio record all generative naming and conversational discourse activities for later analysis. 