Steven Johnson, Everything Bad is Good for You (New York: Riverhead Books, 2000). 
sub title "How today's popular culture is actually making us smarter." Reading level 10th grade.

Johnson proposes an interesting thesis that playing computer games, watching TV, and other current activities are making us smarter rather than less intelligent. To support this conclusion he notes changes in intelligence tests, increased complexity with TV plots, and the complex social mapping that is required by today's average U.S. citizen. Computer games such as Zelda are touted as more complex than books since they require non-linear discovery, multi-muscular and participatory actions, a probing scientific methodology, and complex telescopic thinking to solve.

The book is easy to read and makes some worthwhile points.