Dr. Kimberly Young is one of the foremost experts on Internet Addiction disorders. She has published number of books and journals in relation to the etiology and treatment of internet addiction. In her works, internet addiction can be grouped into six subtypes (Young, 2011):
- Internet Gaming
- Internet Gambling
- Internet Infidelity
- Internet Pornography / Cyber sexual activities
- Information Overload
- Internet Compulsive Buying
Young, K. (2011). Internet Addiction A Handbook and Guide to Evaluation and Treatment.