Researchers divide shoplifters into two categories: "boosters", professionals who resell what they steal, and "snitches", amateurs who steal items for their personal use. Motivations for shoplifting are controversial among researchers, although they generally agree that shoplifters are driven by either economic or psychosocial motives. Psychosocial motivations may include peer pressure, a desire for thrill or excitement, impulse, stealing because judgment is clouded by intoxication, or doing so because of a compulsion. Depression is the psychiatric disorder most commonly associated with shoplifting. Shoplifting is also associated with family or marital stress, social isolation, having had a difficult childhood, alcoholism or drug use, low self-esteem, and eating disorders, with bulimic shoplifters frequently stealing food. Some researchers have theorized that shoplifting is an unconscious attempt to make up for a past loss.