Key points are not available for this paper at this time.
Richard W. Leftwich, Ross L. Watts, Jerold L. Zimmerman, Voluntary Corporate Disclosure: The Case of Interim Reporting, Journal of Accounting Research, Vol. 19, Studies on Standardization of Accounting Practices: An Assessment of Alternative Institutional Arrangements (1981), pp. 50-77
Leftwich et al. (Thu,) studied this question.