Does DVR increase TV viewing?

It certainly allows me to watch all the shows I want to watch....but would I watch all the shows I want to watch if I didn't have a DVR box?

"Mediamark's numbers state that 20 percent of adults watch 44.5 hours or more of TV per week, while only 15.7 of DVR owners watch that much boob tube. The numbers come from in-home interviews of 26,000 adults from March '05 to March '06, but the broadcast networks aren't buying it. David Poltrack of CBS said that interviewees often under report TV watching, and that the research by Arbitron that is usually cited—which conveniently points to more viewing and therefore more ad dollars—is machine-recorded, and therefore more reliable."

[via Engadget]