Dr Sijbom (University of Amsterdam) presented his research on how leaders respond to proactivity. Using a novel simulation, Roy's experiments show that - when managers experience a strong 'performance orientation' (that is, they experience a strong desire to prove their capability to others) - they are less receptive to creative ideas put forward from those they manage. But when managers have a strong learning orientation, they are more open to, and less threatened by, the creativity of their subordinates.
Roy then described various ways that this effect can be mitigated (for example, if the employees put forward their creative ways in a strongly solution-focused way, rather than a problem-oriented way, then the effects of leader performance orientation are reduced).