Multiple-baseline data for CT2’s performance during and after lexical retrieval training for clinician and caregiver-trained sets. Additional post-treatment probes were collected at 2 and 4 weeks posttreatment for caregiver-trained sets. Phases of treatment are indicated by vertical lines, including baseline, treatment, maintenance, post-treatment, and follow-up visits. Tx = Treatment, Wk = Week, F.u. = Follow-up and CG = Caregiver.