Cognitive behavior therapy (CBT) is a relatively short-term form of psychotherapy that involves a problem-solving approach to reduce specific symptoms (e.g. binging and purging). CBT is structured and collaborative, meaning the therapist and patient work together to identify treatment goals and strategies to meet these goals. Through CBT for binge eating or bulimia, people are better able to understand the triggers of their binges/purges and learn specific skills to independently cope with such urges.
DSM is short for the Diagnostic and Statistical Manual of Mental Disorders. It is published by the American Psychiatric Association and classifies all psychological disorders, including eating disorders. The current version is the DSM-IV-TR published in 2000. The DSM-V is expected to be published in 2013.
Interpersonal psychotherpay (IPT) is a relatively short-term form of psychotherapy that focuses on problems in people's relationships (including friends, family, partners). It is a structured form of treatment that seeks to reduce symptoms (e.g. binging/purging) by addressing specific patterns among interpersonal relationships.
In research studies examing therapy or medication treatments, a wait-list control group is a group of people who are not initially offered any treatment, but receive it weeks/months later. During the time they are not getting treatment, they can be compared to others who are receiving treatment. This allows researchers to compare improvements in symptoms between those who receive treatment vs those who do not receive treatment.