The disorder of the brain in which compulsive engagement in rewarding stimuli is observed even when it has negative consequences is termed as addiction. A few examples of behavioral and drug addictions are amphetamine addiction, chocolate addiction, nicotine addiction, alcoholism and marijuana addiction. The diagnosis of addiction can be done by studying physical dependence and the withdrawal syndrome in relation to the addiction. A few symptoms of withdrawal are anxiety, body aches, nausea and hallucinations. Addiction can cause changes in the structure of the brain. Therefore, non-invasive neuroimaging scans can also be used to diagnose addiction. The treatment of addiction generally involves behavioral therapy and medications. This book elucidates the concepts and innovative models around prospective developments with respect to research on addiction. It presents researches and studies performed by experts across the globe. The book is appropriate for students seeking detailed information in this area as well as for experts.