Olge knew that aphasia and agraphia often occurred together, but he confirmed that the impairment of two different types of language (i.e. spoken and written) can vary in type and/or severity.
Aphasia and agraphia often occurred together. This was what Olge knew. The impairment of two different types of language (i.e. spoken and written) can vary in type and/or severity. He confirmed this.