Bijgeloof en sport / Michaéla SchippersReflexivity in teams / Michaéla Corstiana SchippersReflexivity in teams: a measure and correlates / Michaéla C. Schippers, Deanne N. den Hartog and Paul L. KoopmanThe psychological benefits of superstitious rituals in top sport / Michaéla C. Schippers and Paul A.M. van LangeIkigai : reflection on life goals optimizes performance and happiness / Prof. dr. Michaéla Schippers