This study used archival sources to examine the factors that encouraged for-profit business education to shift during the 1970s from small, certificate programs for bookkeepers and secretaries to large, multisite universities for mid-level managers. Using data from the Occupational Outlook Handbook, as well as trend data from the Bureau of Labor…

The number of individual items that can be maintained in working memory is limited. One solution to this problem is to store representations of ensembles that contain summary information about large numbers of items (e.g., the approximate number or cumulative area of a group of many items). Here we explored the developmental origins of ensemble…

The authors analyze civilian occupations and employment data collected by the U.S. Census Bureau in 1960, 1970, 1980, 1990, and 2000 with respect to 6 kinds of work (Holland's RIASEC [Realistic, Investigative, Artistic, Social, Enterprising, Conventional] classification), employment, and gender. For the 1990 and 2000 censuses, kinds of work,…