Which of the following is a symptom of mixed transcortical aphasia?

Mixed transcortical aphasia is characterized by specific language deficits, particularly in the context of the individual's ability to produce and comprehend language. The defining symptom of this condition is the presence of echolalia, which is the involuntary repetition of phrases or sentences spoken by others. This behavior signifies a disconnect between language comprehension and the ability to generate meaningful speech, leading to the characteristic pattern of fluent but often nonsensical or uncontextualized speech.

In this type of aphasia, individuals may appear to be able to echo or repeat what others say but struggle to engage in meaningful conversation or produce original thoughts. Although they can produce fluent speech, the content may lack substance and relevance. Their comprehension abilities—both written and spoken—are typically impaired, further highlighting the distinction of mixed transcortical aphasia from other forms where repetition and comprehension are less affected.

This makes the description of innocuous repetition accurately reflect a core symptom of mixed transcortical aphasia, where the ability to communicate effectively is overshadowed by the ability to repeat others verbatim.