eBooks take longer to read: a new way to save on books?

Kindle e-book reader
Kindle e-book reader

A new study

says it takes longer to read books on Apple's iPad or Amazon's Kindle than printed books.

Product development consultant Jakob Nielsen of California's Nielsen Norman Group says reading speeds dropped 6.2% on the iPad and 10.7% on the Kindle compared to print. The study couldn't tell which reader gave the faster reading experience -- the Kindle 2 or iPad -- because of "high variability" of the study data, Nielsen says.