"It is particularly interesting to note that there are great differences in the occurrence of nocturnal emissions across educational levels and occupational classes (Kinsey et al., 1948). Wet dreams occur most often in that segment of the population that goes to college. Among males who are in college, nocturnal emissions begin at earlier ages than among males of lower educational levels. Those men who had no more than eight years of school report the lowest incidence of nocturnal emissions, while those males who had 13 years of school report the highest incidence of nocturnal emissions (Kinsey et al., 1948). With regard to differences in occupational classes, Kinsey et al. (1948) reported that day laborers averaged not more than two or three nocturnal emissions per year and semi-skilled workmen reported an emission frequency only a bit higher than that. The frequency of nocturnal emissions in the college and graduate school groups, however, was close to once every two weeks at practically every age level throughout life. This means that males in the upper occupational levels report 10 to 12 times as many nocturnal emissions as reported among males of the lower occupational classes. College males report the highest frequency of nocturnal emissions, with a peak of 19 to 20 years of age (Kinsey et al, 1948). This can be interpreted to mean that the lowest frequency of males not experiencing nocturnal emissions should appear in this population. Since only the Kinsey studies reported nocturnal emission frequency figures, these figures can be used to validate this investigation by the similarity in sample population."