Imitation in very young infants 

Nagy E, Pilling K, Blake V, Orvos H. Positive evidence for neonatal imitation: A general response, adaptive engagement. Dev Sci. 2019 Aug 13:e12894.

Predicting target of hand actions 

Koch, B., & Stapel, J. (2019). The role of head and hand movements for infants' predictions of others' actions. Psychological research, 83(6), 1269–1280. doi:10.1007/s00426-017-0939-6

Learning from observation

Bassolino M, Sandini G, Pozzo T. Activating the motor system through action observation: is this an efficient approach in adults and children? Dev Med Child Neurol. 2015 Apr;57 Suppl 2:42-5.

Bassolino, M., Campanella, M., Bove, M., Pozzo, T., & Fadiga, L. (2014). Training the motor cortex by observing the actions of others during immobilization. Cerebral cortex (New York, N.Y. : 1991), 24(12), 3268–3276. doi:10.1093/cercor/bht190