8 months old twins watching children’s TV (Teletubbies)

For most of the time (22 min. in total) the boys stare fascinated and motionless at the screen. More than his brother in the back, the twin in front shows facial expressions, first (small) smile after 58 sec., and the first yawn (seemingly bored) after seven minutes, while watching singing adults. The teletubbies themselves (“Oh oh“) elicit the most reactions. After ten to fifteen minutes the attention of both boys relaxes somewhat (increase of yawning and playing with their favorite blue rope). Only after