Mean correlation for predicted and observed values across tests for the best model from the non-partitioned (LV-age) and functionally-partitioned lesion (LV-PCA-age) model groups. Abbreviations: Minimal pairs non-word (PALPA 1), Minimal pairs word (PALPA 2), non-word immediate repetition (PALPA 8 I), non-word delayed repetition (PALPA 8 D), word immediate repetition (PALPA 9 I), word delayed repetition (PALPA 8 D), Cambridge naming test (CNT), Boston naming test (BNT), forward digit span (Digit F), backward digit span (Digit B), spoken sentence comprehension from comprehensive aphasia test (CAT spoken), spoken word-picture matching (sWPM), written word-picture matching (wWPM), type/token ratio (TTR), camel and cactus picture form (CCTp), 96-synonym judgement task (Synon), words-per-minute (WPM), speech tokens (TOK) and mean length of utterances (MLU).