The parents in the film, played by Stephen Dunham and Alexondra Lee were a real life married couple. Sadly, Stephen Dunham died on September 14, 2012 of a heart attack, shortly before the film was theatrically released.
As with the previous three Paranormal Activity movies, Paramount Studios utilizes paranormal investigator/researcher, Christopher Chacon, (who is recognized as one of the world's foremost authorities on paranormal phenomena), to internationally promote and publicize this fourth installment. Chacon also works in the entertainment industry as a writer, director and producer.
Though it may seem like a novel concept, incorporating a laptop camera into "Paranormal Activity 4" played an important practical role in the filmmaking. "Anything can go on behind, and she wouldn't necessarily know unless the person on the other end of the video chat told her that it was behind her," Schulman said. "It just seemed like a really fun way to carry a camera and film yourself because otherwise there's no other way to shoot close-ups in a 'Paranormal' movie. Usually you're filming forward, so this way you can actually get a reaction shot."