| 
Citations
 | 
   web
de Waal, F. B. M. (2005). How animals do business. Sci Am, 292(4), 54–61.
toggle visibility
Rizzolatti, G., Fogassi, L., & Gallese, V. (2006). Mirrors of the mind. Sci Am, 295(5), 54–61.
toggle visibility