Social phobia is a very common and debilitating disorder, with public speaking anxiety being the most common fear. Psychologists have found that treating patients for their fear of public speaking, through cognitive-behavioral treatment (talk-based therapy) or exposure treatment (where participants participate in actual public speaking sessions), not only helps patients overcome this fear but also helps them overcome their more general social fears. However, little is known about how this change occurs during therapy. This study tries to identify the factors that contribute most to successful therapy.