P. André, A. Filip, and L. Paugam, The Effect of Mandatory IFRS Adoption on Conditional Conservatism in Europe, Journal of Business Finance & Accounting, vol.17, issue.4, 2014.
DOI : 10.1111/jbfa.12105

R. Ball, International Financial Reporting Standards (IFRS): pros and cons for investors, Accounting and Business Research, vol.53, issue.2, pp.5-27, 2006.
DOI : 10.1016/S1061-9518(02)00054-X

S. Basu, The conservatism principle and the asymmetric timeliness of earnings1, Journal of Accounting and Economics, vol.24, issue.1, pp.3-37, 1997.
DOI : 10.1016/S0165-4101(97)00014-1

S. Basu and G. Waymire, Has the importance of intangibles really grown? And if so, why?, Accounting and Business Research, vol.320, issue.3, pp.171-190, 2008.
DOI : 10.1126/science.1136099

B. Browning, Maximizing R&D Write-offs to reduce goodwill, Mergers and Acquisitions, vol.32, pp.29-32, 1997.

D. J. Denis, D. K. Denis, and A. Sarin, Agency Problems, Equity Ownership, and Corporate Diversification, The Journal of Finance, vol.44, issue.1, pp.135-160, 1997.
DOI : 10.1111/j.1540-6261.1997.tb03811.x

K. M. Dunne, An empirical analysis of management's choice of accounting treatment for business combinations, Journal of Accounting and Public Policy, vol.9, issue.2, pp.111-133, 1990.
DOI : 10.1016/0278-4254(90)90014-Q

J. Francis, J. D. Hanna, and L. Vincent, Causes and Effects of Discretionary Asset Write-Offs, Journal of Accounting Research, vol.34, pp.117-134, 1996.
DOI : 10.2307/2491429

J. E. Garten, Strengthening Financial Markets: Do Investors Have the Information They Need? Report of an SEC-Inspired Task Force, 2001.

F. Gu and B. Lev, Overpriced Shares, Ill-Advised Acquisitions, and Goodwill Impairment, The Accounting Review, vol.86, issue.6, pp.1995-2022, 2011.
DOI : 10.2308/accr-10131

C. Hayn and P. J. Hughes, Leading Indicators of Goodwill Impairment, Journal of Accounting, Auditing & Finance, vol.22, issue.1, pp.223-265, 2006.
DOI : 10.1177/0148558X0602100303

S. L. Henning, B. L. Lewis, and W. H. Shaw, Valuation of the Components of Purchased Goodwill, Journal of Accounting Research, vol.38, issue.2, pp.375-386, 2000.
DOI : 10.2307/2672938

M. Hirschey and V. J. Richardson, Information content of accounting goodwill numbers, Journal of Accounting and Public Policy, vol.21, issue.3, pp.173-191, 2002.
DOI : 10.1016/S0278-4254(02)00048-0

R. W. Holthausen and R. L. Watts, The relevance of the value-relevance literature for financial accounting standard setting, Journal of Accounting and Economics, vol.31, issue.1-3, pp.3-75, 2001.
DOI : 10.1016/S0165-4101(01)00029-5

P. E. Hopkins, R. W. Houston, and M. F. Peters, Purchase, Pooling, and Equity Analysts' Valuation Judgments, Accounting Review, vol.75, issue.257, 2000.

H. W. Jenkins, Business World: Mean Old FASB: Forcing Us to Think, 1999.

R. Jennings, J. Robinson, R. B. Thompson-ii, and L. Duvall, THE RELATION BETWEEN ACCOUNTING GOODWILL NUMBERS AND EQUITY VALUES, Journal of Business Finance & Accounting, vol.4, issue.2, pp.513-533, 1996.
DOI : 10.2307/3003167

L. T. Johnson and K. R. Petrone, Is goodwill an asset? Accounting Horizons, pp.293-303, 1998.

C. Kanodia, H. Sapra, and R. Venugopalan, Should Intangibles Be Measured: What Are the Economic Trade-Offs?, Journal of Accounting Research, vol.42, issue.1, pp.89-120, 2004.
DOI : 10.1111/j.1475-679X.2004.00130.x

S. Kim, C. Lee, and S. W. Yoon, Goodwill accounting and asymmetric timeliness of earnings, Review of Accounting and Finance, vol.12, issue.2, pp.112-129, 2013.
DOI : 10.1108/14757701311327687

M. D. Kimbrough, Do investors rely on purchase price allocation disclosures?, Working Paper Harvard Business School Lee, C., 2011. The effect of SFAS 142 on the ability of goodwill to predict future cash flows, Journal of Accounting and Public Policy, vol.30, pp.236-255, 2007.

K. K. Li and R. G. Sloan, Has Goodwill Accounting Gone Bad?, Working Paper, 2014.

L. A. Maines, E. Bartov, P. M. Fairfield, D. E. Hirst, T. A. Iannaconi et al., Implications of Accounting Research for the FASB's Initiatives on Disclosure of Information about Intangible Assets, Accounting Horizons, vol.17, issue.2, pp.175-185, 2003.
DOI : 10.2308/acch.2003.17.2.175

B. Mcgoldrick, Goodwill games, Institutional Investor, vol.31, pp.145-149, 1997.

R. Morck, A. Shleifer, and R. W. Vishny, Do Managerial Objectives Drive Bad Acquisitions?, The Journal of Finance, vol.2, issue.1, pp.31-48, 1990.
DOI : 10.1111/j.1540-6261.1990.tb05079.x
URL : http://nrs.harvard.edu/urn-3:HUL.InstRepos:27693803

J. A. Ohlson, Earnings, Book Values, and Dividends in Equity Valuation, Contemporary Accounting Research, vol.11, issue.2, pp.661-687, 1995.
DOI : 10.1111/j.1911-3846.1995.tb00461.x

S. H. Penman, Accounting for Intangible Assets: There is Also an Income Statement, Abacus, vol.18, issue.2, pp.358-371, 2009.
DOI : 10.1111/j.1467-6281.2009.00293.x

K. Ramanna, The implications of unverifiable fair-value accounting: Evidence from the political economy of goodwill accounting, Journal of Accounting and Economics, vol.45, issue.2-3, pp.253-281, 2008.
DOI : 10.1016/j.jacceco.2007.11.006

K. Ramanna and R. Watts, Evidence on the use of unverifiable estimates in required goodwill impairment, Review of Accounting Studies, vol.75, issue.4, pp.749-780, 2012.
DOI : 10.1007/s11142-012-9188-5

S. Roychowdhury and X. Martin, Understanding discretion in conservatism: An alternative viewpoint, Journal of Accounting and Economics, vol.56, issue.2-3, pp.134-146, 2013.
DOI : 10.1016/j.jacceco.2013.11.001

R. Shalev, The Information Content of Business Combination Disclosure Level, The Accounting Review, vol.84, issue.1, pp.239-270, 2009.
DOI : 10.2308/accr.2009.84.1.239

R. Shalev, I. X. Zhang, and Y. Zhang, CEO Compensation and Fair Value Accounting: Evidence from Purchase Price Allocation, SSRN Electronic Journal, vol.51, pp.819-854, 2013.
DOI : 10.2139/ssrn.1600903

D. J. Skinner, Accounting for intangibles ??? a critical review of policy recommendations, Accounting and Business Research, vol.9, issue.3, pp.191-204, 2008.
DOI : 10.1016/0304-405X(92)90029-W

L. Vincent, Equity valuation implications of purchase versus pooling accounting, Journal of Financial Statement Analysis, vol.2, pp.5-15, 1997.

R. L. Watts, Conservatism in Accounting Part I: Explanations and Implications, Accounting Horizons, vol.17, issue.3, pp.207-221, 2003.
DOI : 10.2308/acch.2003.17.3.207

A. B. Zanoni, Accounting for Goodwill, Routledge, 2009.

I. Zhang and Y. Zhang, Accounting discretion and purchase price allocation after acquisitions, 2014.

B. Panel, Descriptive statistics of the level of Abnormal Goodwill N Mean St Dev Min 1st Q. Median 3rd

A. and =. Acquirer, s goodwill divided by total assets at the end of the year after completion of the acquisition ACQ_MTB [t+1 ; t+2 ; t+3] = Acquirer's average market-to-book ratio during the three years after completion of the acquisitiont+1 ; t+2 ; t+3] = Acquirer's average natural logarithm of total assets during the three years after completion of the acquisition, ACQ_SIZE [ ACQ_LEV, vol.2, issue.3