Loneliness and Suicidal Thoughts

John T. Cacioppo, a professor of psychology at the University of Chicago and director of the university’s Center for Cognitive and Social Neuroscience, has been studying loneliness since the 1990s. He said loneliness is an aversive signal much like thirst, hunger or pain.

Dr. Perissinotto is also interested in examining the link between loneliness and suicidal thoughts, as there has been little research in that area. She hopes to study The Friendship Line, a 24-hour, toll-free, loneliness call-in line run by the Institute on Aging in San Francisco that is also a suicide prevention hotline.