Dr. Philip Zimbardo wrote a book called "Man, Interrupted" that addresses this topic to some degree. One factor that he mentioned was the advent of high-speed internet, supporting both video games (virtual achievement) and pornography (virtual gratification).
AOL announced its plans for high-speed DSL internet in January of 1999 -- the same year as the beginning of the study period.
AOL announced its plans for high-speed DSL internet in January of 1999 -- the same year as the beginning of the study period.
https://webcache.googleusercontent.com/search?q=cache:wV1z7-...