ABSTRACT
Teams are broadly dened as groups of individuals that socially interact with one another (face-to-face, virtually, or more likely some combination of both) and complete tasks interdependently (Kozlowski & Bell, 2003; Kozlowski & Ilgen, 2006). A frequent (and increasing) hallmark of organizational teamwork is that it occurs in unpredictable, ever-changing contexts (Mathieu, Maynard, Rapp, & Gilson, 2008; Wageman, Gardner, & Mortensen, 2012). To overcome and thrive in such uncertainty – which arises from both general (e.g., teammates not knowing how to interact with one another; Tuckman, 1965; Oldham & Hackman, 2010) and unique (e.g., project teams assigned a novel task; Gardner, Gino, & Staats, 2012) sources – teams must be proactive (Grin, Neal, & Parker, 2007; Oldham & Hackman, 2010; Williams, Parker, & Turner, 2010).
