“…Cognitive differentiation in terms of cognitive contents available in the group Individual differences in expertise, experience, knowledge, skills, perspectives on the tasks, skill set, professional background, type of education Chow (2018), Dahlin et al (2005), Miller et al (1998), Jankelova et al (2021), Van der Vegt and Janssen (2003), Zaggl and Pottbacker (2021) Cognitive differentiation in terms of cognitive processes or information processing tendencies, capabilities, or preferences Individual differences in thinking styles, values, beliefs, neurological conditions, professional norms, level of expertise, level of cognitive complexity, cognitive abilities, decision rationality, decision-making styles and preferences, level of education , Chen et al (2019), Curşeu et al (2007Curşeu et al ( , 2013Curşeu et al ( , 2015, Dahlin et al (2005), Devine and Philips (2001), Kilduff et al (2000), Miller et al (1998), Vanderheyden and De Baets (2015) 2010). More specifically, in line with the distinction between variety and disparity presented by Harrison and Klein (2007) and the framework developed by Bunderson and Van der Vegt (2018), we argue that cognitive diversity can be mapped along two co-existing differentiation dimensions, namely horizontal (the dispersion of cognitive resources in the group) and vertical (the unequal concentration of cognitive resources in the group), and cognitive diversity impacts group effectiveness through convergent and divergent processes (Stahl et al, 2010).…”