Regarding Hollenbeck et al.'s (2012) framework for the composition of teams, what is defined by the first dimension, skill differentiation? Regarding Hollenbeck et al.'s (2012) framework for the composition of teams, what is defined by the first dimension, skill differentiation? Who is in charge of making decisions for the team Who is in charge of making sure the team is composed of experts in different areas Who will perform what tasks Who is able to learn new skills and who is not