The Psychology of Management by Lillian Moller Gilbreth

(a) individual records. Through these the individual himself knows what he has done, his fellows know, and the management knows. (b) comparative records, which show even those who might not make the comparison, exactly how each worker stands, with relation to his mates, or with relation to his past records. This appreciation of standing is well exemplified in the happy phrasing of Mr. Gantt--"There is in every workroom a fashion, or habit of work, and the new worker follows that fashion, for it isn't respectable not to. The man or woman who ignores fashion does not get much pleasure from associating with those that follow it, and the new member consequently tries to fall in with the sentiment of the community.[3] Our chart shows that the stronger the sentiment in favor of industry is, the harder the new member tries and the sooner he succeeds."