Answer:
Some specific types of mental health problems are notably more common in people with learning disabilities than in other people, including schizophrenia (Cooper et al., 2007c; Turner, 1989), bipolar disorder (Cooper et al., 2007b), dementia (Cooper, 1997a; Strydom, 2007), ADHD (Emerson & Hatton, 2007), and pica.
Explanation:
Communication barriers can be physical disabilities such as hearing problems or speach problems but it can also be the lack of interest, attention differences in viewpoint etc.