@article{ref1,
title="The Theory of Correlation Applied in Studies of Changing Attitudes",
journal="American journal of sociology",
year="1927",
author="Sturges, Herbert A.",
volume="33",
number="2",
pages="269-275",
abstract="Of the many possible use of the methods of correlation in connection with experimental investigations of attitude change, the present report suggests four: the use of correlation methods (1) to indicate the extent to which changeability is a general or specific characteristics of personality; (2) to test materials used in attitude tests in order to select those which give the most valid and consistent results; (3) to ascertain the degree of reliance which may be placed on attitude test scores from persons voting only once; and (4) to measure the diagnostic and prognostic and prognostic value of preliminary tests in connection with courses of study.<p />",
language="",
issn="0002-9602",
doi="10.1086/214386",
url="http://dx.doi.org/10.1086/214386"
}