Hallucinations (perceived sensations that are not real, such as hearing voices or seeing shadows) Delusions (false beliefs with no basis in reality that the person will not relinquish, even when given evidence to the contrary) Disorganized speech (difficulty producing clear and coherent sentences) Inability to distinguish real from imaginary Odd or unusual behavior Paranoia Unclear thinking Lack of emotion in facial expression and speech Poor motivation Slow movements or inability to move