Zacher, H.

professor research assistant leadership research assistant ratings research assistants age stereotypes professor age rating relationship stereotype university study proactive proactive leadership passive-avoidant erasmus university concern passive-avoidant leadership psychology education zacher leader follower age-related change work concerns erasmu journal frese october downloaded follower ratings age-related changes fi ndings age-related work concerns leader age today leadership ratings development behavior nding scale future worker theory supervisor university professors moderator performance example science selectivity transactional leadership effect fluence follower empowerment avolio boundary conditions table future time perspective hypothesis questionnaire result 5- point scales retirement variable transformational rosing figure experience review activity non-work speci fically transformational leadership contrast research assistant factor german