The disconnectbetweenthefulldisclosurepredictionsintheearlyanalyticaldisclosureliterature(Grossman,1981 and
Milgrom,1981) andtheempiricallyobservedphenomenonoffirmssometimeswithholdinginformationinspiredthe
developmentofvoluntarydisclosureliterature.2 In hisseminalpapers, Verrecchia(1983, 1990) providesperhapsoneofthe
first explanationsforthephenomenonoffirmsconcealingsomeinformation:thepresenceofproprietarydisclosurecosts
can leadfirmstodiscloseonlyrelativelyfavorableinformationandwithholdunfavorableinformationinequilibrium.3
This disclosureliteratureassumesthatiffirmschoosetodisclose,theymustonlydisclosetheirprivateinformation
truthfully;theonlyotherchoicefirmshaveisnottomakeanydisclosures.Incontrast,thetradingliterature(e.g., Akerlof,
1970) oftenassumesthatsellerscannotcommunicatetheirprivateinformationcredibly.Whileboththesesetsof
assumptionsmaybetrueinavarietyofsettings,wealsoempiricallyobservesettingsinwhichthecredibilityoffirms'
Disconnectbetweenthefulldisclosurepredictionsintheearlyanalyticaldisclosureliterature การ (Grossman, 1981 และMilgrom, 1981) andtheempiricallyobservedphenomenonoffirmssometimeswithholdinginformationinspiredthedevelopmentofvoluntarydisclosureliterature.2 ใน hisseminalpapers, Verrecchia (1983, 1990) providesperhapsoneoftheexplanationsforthephenomenonoffirmsconcealingsomeinformation:thepresenceofproprietarydisclosurecosts แรกสามารถ leadfirmstodiscloseonlyrelativelyfavorableinformationandwithholdunfavorableinformationinequilibrium.3นี้ disclosureliteratureassumesthatiffirmschoosetodisclose, theymustonlydisclosetheirprivateinformationจริง ๆ theonlyotherchoicefirmshaveisnottomakeanydisclosuresIncontrast, thetradingliterature (เช่น Akerlofoftenassumesthatsellerscannotcommunicatetheirprivateinformationcredibly 1970)Whileboththesesetsofassumptionsmaybetrueinavarietyofsettings, wealsoempiricallyobservesettingsinwhichthecredibilityoffirms'
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