When a person starts talking to someone you can’t see or answering voices you can’t hear, it can be very scary. Visual and auditory hallucinations could be a sign of schizophrenia, a mental disorder that most often strikes young adults. What can be done to help them? Guest: Dr. Jeffrey Lieberman, Thad and Alice Eure Distinguished Professor of Psychiatry at the UNC School of Medicine. He’s also Director of the Mental Health Research Center.