Browne (1949) found in his well-known study of female teleprint operators that 'there is some support for saying that at night the more work th^ girls have to do the better they do it ###>Dans son étude sur les opératrices d'un standard télex, Browne (1949) faisait remarquer "qu'on est fondé à dire que, la nuit, plus on leur donne du travail, mieux ces filles 1'accompliront..."