Professor Tove Fjeld, of the University of Agriculture in Oslo, questioned Norwegian pupils and office workers about their working conditions and state of mind.
He remembered being picked for teams during sport lessons at his old school. He had always been last to be chosen, not because he was no good, but because no one wanted Dudley to think they liked him.
So engrossed had they been in their gossip that they had not heard her light tread and now, confronted by their hostess, they looked like whispering schoolgirls caught by a teacher.