Raymond is completing a study on discrimination in which he has noted that saleswomen who wear skirt suits make more sales than saleswomen who only wear pant suits. however, Raymond determined that his findings only pertained to those industries in which the purchasing decision maker is traditionally masculine. For example, the sales results were the same for all women selling to medical office managers, a female dominated field. Raymond used _______ variables to more accurately explain his results.
A) global
B) general
C) dependent
D) non-reactive
E) contingency