Key points are not available for this paper at this time.
Robert B. Thompson II, Chris Olsen, J. Richard Dietrich, Attributes of News about Firms: An Analysis of Firm-Specific News Reported in the Wall Street Journal Index, Journal of Accounting Research, Vol. 25, No. 2 (Autumn, 1987), pp. 245-274
Thompson et al. (Thu,) studied this question.
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