Which type of aphasia is known for having incorrect grammar but includes morphemes?

The type of aphasia characterized by incorrect grammar while still including morphemes is indeed paragrammatism. In paragrammatism, individuals produce sentences that may demonstrate grammatical errors or deviations from typical syntax, but they still maintain the use of relevant morphemes, which are the smallest units of meaning in language. This contrasts with other types of aphasia, where the structure and use of morphemes may be more severely impaired.

In paragrammatism, the speech may be fluent but can take on a jumbled or incorrect form, making it difficult for listeners to derive clear meaning, yet the presence of morphemes indicates that some level of grammatical structure is being attempted. This underlines the difference between paragrammatism and other forms of aphasia, such as agrammatism, where there is a more pronounced omission of grammatical elements.

Understanding these nuances helps clarify how different types of aphasia affect language production and comprehension. Hence, paragrammatism's unique characteristics of incorrect grammar with the use of morphemes align it perfectly with the question's criteria.