One of the best known investigations in the area of psychology was performed at

the Hawthorne Works of the Western Electric Company. The reason for the research,
which led to the so-called Hawthorne effect, was to

(a) find better ways to gain worker satisfaction so that turnover would be
reduced
(b) show that scientific management simply did not work, because it was not
really scientific
(c) find the optimal level of illumination for assembly workers
(d) discover whether there were expectancy effects among the workers
(e) all of the above

C