Average Movie Ticket Price Falls 6.4 Percent in Third Quarter to $7.84

Despicable Me 2 Minions Laughing - H 2013
Universal Pictures

Despicable Me 2 Minions Laughing - H 2013

The number of theater admissions, 585 million, was the highest this summer since 2007; lower ticket prices resulted from fewer people seeing movies in 3D.

The average price of a movie ticket fell 6.4 percent in the third quarter of 2013 -- to $7.84 from $8.38 in the prior quarter.

This summer, there were 585 million admissions to North American cinemas -- the highest number of tickets sold since 2007, when the number was 609 million.

PHOTOS: Summer's Biggest Box Office Hits and Misses 

While it is not unusual to see a drop-off from the second to third quarter of the year, the decrease is greater than usual. It is the result of more premium-priced 3D movies being released in the second quarter than the third quarter, and of more families opting to see movies in 2D instead of paying for the higher-priced 3D tickets.

This is in line with a continuing trend. When the new era of digital 3D movies began a few years ago, people rushed to view them. More recently, families have become more selective about what they see in 3D and often opt to pay less and see the same movies in 2D.

Among the top-performing family movies this year have been Despicable Me 2, Monsters University and The Croods.

Pamela McClintock contributed to this article.