Twenty Broca's aphasia patients were stimulated with four cues in a picture-naming task. Among the severe aphasics in the group, presentation of a word to be imitated was the most effective cue and presentation of the initial syllable of the word ranked second. Sentence completion and printed word cues were equally effective and ranked third. Mild aphasic patients responded equally well to all four classes of cues. Reliability measures indicated that the order of potency of cues for the severe group was stable over time. Oral apraxia did not appear to contribute significantly to the severity of Broca's aphasia in any of these subjects. Possible explanations are presented for the effectiveness of cues studied.