Ask any kid while they are using their cell phone if they are listening to you, chances are they will reply in the affirmative even though they will have trouble recounting what has been said. That’s what Arnold Glass, a psychology professor at Rutgers University at New Brunswick thought, but his students told him that using various digital devices in his class had no negative effect on their performance, so he decided to test it out. His study shows that digital multitasking can adversely affect students' long-term retention of material, a study you might want to tell your kids about.