Impairment in mental skills could affect the conversational ability of people with Parkinson's more than the physical speech problems finds a new research. The study revealed that physical speech problems are often less of a problem for patients than having the cognitive ability to keep up with conversations. A patient's ability for example not being able to think quickly enough to keep up with conversations or not being able to find the right words forms a barrier to communication more than experiencing physical speech problems. Around 70 percent of people with Parkinson's have problems with speech and communication which can