"Despite the fact that imitation is critical to human sociality and cumulative culture the best available evidence suggests it is not present at birth." https://onlinelibrary.wiley.com/doi/10.1111/desc.12892 …pic.twitter.com/d2SAyLY7TZ
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Mouth movements (tongue protrusion & mouth opening) are used to test imitation in human newborns because they have control over those behaviors. If you use something more complex that isn't in their behavioral repetoire, then they wouldn't be able to copy it.
Another advantage of using facial expressions is that babies can't see their own faces, as they can with other body parts, such as hands. So if they match what they see & reproduce the facial expression it's more likely a sensorimotor matching skill independent of experience.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.