我国上市公司盈余管理的理论与实证研究--基于行业视角(I)

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1、武汉理工大学博士学位论文我国上市公司盈余管理的理论与实证研究——基于行业视角姓名：李清申请学位级别：博士专业：管理科学与工程指导教师：邓明然20080301AbstractEarningsManagementisbecomingaforefrontresearchtopicintheinternationaleconomicsandintheaccountingacademysince1980s；furthermore．itisaworldwidecomplicatedproblem．EarningsManagementinChinesel

2、istedcompaniesisSOprevalentthatithasbroughtanegativeimpactonthenormalfunctioningofthemarketeconomy．ThispaperaimsatprovidingdirectionforinvestorsandpolicyrecommendationsforgovernmentsupervisiondepartmentsbymeansofpositivecomparisonstudiesonEarningsManagementamongindustries·

3、BasedonthebasictheoryofEarningsManagement，EMmotivesandEMmeansinChineselistedcompanies，thepapertakesuseofmodifiedJonesModeltostudylistedcompanydataof22industriesfrom2001to2006．Thepaperhasverified4significantconclusions：(1)UniversalityofEarningsManagement：EarningsManagementi

4、shighlyuniversalin22industriesinChina．(2)Directionofearningsmanagement：16sectorsinthetotal22sectorsaretakingonapositiveEarningsManagement，whichshareproportionof73％：6sectorstakingreverseEarningsManagement，whichshareproportionof27％．Positivestudyhasprovedthatthemajorityoflist

5、edcompaniestendtomakemoreearnings．(3)DegreeofEarningsManagement：PositiveEarningsManagementin9sectorsoftotal22sectorsisserious，whichshares41％proportionoftotal22sectorsand56％proportionof16positiveEaringsManagementsectors．ThismeanslistedcompaniesinChinanotonlytakeonEarningsMa

6、nagementbutalsotheextentofEarningsManagementisquitehigh．(4)MeansofEarningsManagement：nearlyhalfofindustrialsectorsinhighdegreeofearningsmanagementsectorsusereductionofnon。creditsales，thatis，increasingcreditsalestomanageearnings，inaddition，recordinglowfixedassetsactualvalue

7、(whichmeanslowerdepreciationinthefuture)torealizemoreearnings．PositivestudYhasprovedthatnearlyhalfofsectorsdon’tultimatelymakeUSeoffixedassetsandincometomanageearnings，indicatingtheyuseothermanipulationmeans·ThedegreeofEarningsManupulationinreverseEarningsManagementsectors

8、IIisinmiddleorlowlevel．whichmeansthatthespanofreverseearningsmanagementnotlargeevenifitex