The goal of this clinical trial is to compare the effectiveness of traditional Semantic Feature Analysis (SFA) treatment to a modified SFA protocol that includes Metacognitive Strategy Training (SFA+MST) for adults with acquired aphasia. The main questions it aims to answer are: * What are the comparative outcomes in picture naming accuracy and strategy use during picture naming following 2 months of traditional SFA versus SFA + MST in adults with acquired aphasia? * What are the comparative outcomes in percent of informative content and rate of informative content during spontaneous speech production following 2 months of traditional SFA versus SFA + MST in adults with acquired aphasia? Researchers will compare outcomes between these two treatments to see if SFA+MST yields larger effects in picture naming and spontaneous speech outcomes than traditional SFA. Participants will complete: * 5-7 pre-treatment assessment sessions where they will be asked to name pictures, tell stories/describe pictures, answer questions, and complete questionnaires, * 3 treatment sessions of SFA \*OR\* SFA+MST per week for 8 weeks, for a total of 24 sessions, * 7 weekly probes (i.e., short, intermittent assessments throughout the treatment phase), * 3 post-treatment assessment sessions immediately after treatment ends, where they will complete the same assessment tasks as they did pre-treatment (e.g., naming pictures, telling stories, etc.), * 2 retention assessment sessions, one 30 days and the other 60 days following the final treatment session, where they will be asked to name pictures, tell stories/describe pictures, and describe what they learned during the study.
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Confrontation naming accuracy
Timeframe: Change from Baseline through study completion, an average of 6 months
Independent word-finding strategy use
Timeframe: Change from Baseline through study completion, an average of 6 months