Andrew Meltzoff’s research, on infants imitating facial expressions, is referenced in this UVA Today article: https://news.virginia.edu/content/stop-copying-me-why-imitating-others-good-you-most-time
Andrew Meltzoff’s research, on infants imitating facial expressions, is referenced in this UVA Today article: https://news.virginia.edu/content/stop-copying-me-why-imitating-others-good-you-most-time