Abstract
In this paper, we report such results of time studies about theaters, auditoriums, baseball grounds, examination halls, factories as follows; 1 On the audience who arrive at theaters or halls, modes of concentration curves are between 5 and 10min. before the time when the curtains rise, and ratio of concentration in 5min., is about 15%. 2 On the spectators who arrive at baseball ground, modes of concentration curves are between 10 and 20min. befoe play ball time, and ratio of concentration in 5min., is about 13%. 3 On the persons who arrive at examination halls, modes of concentration cirves are between 25 and 35min. before biginning time of examination, and ratio of concentration in 5min. is about 15%. 4 On the persons who leave examination halls, modes of concentration curves are between 0 and 10min. after the end time of examinations, and ratio of concentration in 5min. is about 45%. 5 On the persons who leave factories, modes of concentration curves are between 20 and 25min. behind the end time of works, and ratio of concentration in 5min. is about 14%.
