I used to work at Nickelodeon. We used to head to public schools and offer them computers for their computer room if they allowed a screening of a roughly assembled episode of a new animated series. The room would lined with cameras and child psychologists. The second the child took their eyes off of the screen and started to play with the Mr. potato head doll they were given. The studio was given notes and time code exactly where that happened and it was sent back to alter the point where the child’s interest wained. Colors were adjusted, loud noises were added anything to mesmerize the child. Parents signed up to have their children defeated psychologically. This has been going on a long long time.