A task to assess the level of comprehension of the aphasic patient in which they are asked to respond to spoken commands, or to point to pictures of associated words or a semantically-related of spoken target words.
Comprehension is typically tested in one of two ways: orally or in written form. Oral comprehension is tested either by asking subjects to respond to sentences that vary in syntax, or by presenting subjects with paragraph-length material and then asking them questions about if written comprehension, on the other hand, is tested by having subjects read sentences or paragraphs and then asking questions that require them to make inferences. Studies that use syntactic manipulation to test comprehension vary in their definition of syntactic complexity. Sentence structures that result in more response errors or slower reaction times are generally considered more complex than sentences that result in few errors or fast response times.