olution, 60(1), 94-105; Bruner, E., & Holloway, R. L. (2010). A bivariate approach to the widening of the frontal lobes in the genus Homo. Journal of Human Evolution, 58, 138-146; Ebisch, Sjoerd J H, Gallese, Vittorio, Willems, Roel M, Mantini, Dante, Groen, Wouter B, Romani, Gian Luca, Bekkering, Harold. (2010).