This excerpt taken from the ATVI DEF 14A filed Apr 22, 2009.
Role of Compensation Consultants in Compensation Decisions
Pursuant to the Compensation Committee's charter, the Compensation Committee may engage compensation consultants to help formulate director and executive compensation. Prior to the Combination, the Compensation Committee retained Frederic W. Cook & Co. Inc. ("Frederic W. Cook") for advice on determining the compensation arrangements for Mr. Kotick. During the nine month period ended December 31, 2008, the Compensation Committee did not engage a compensation consultant for services related to executive compensation; however, our management team retained Mercer (US) Inc. ("Mercer") to provide information, analyses, and advice regarding executive compensation. The Mercer consultant who performs these services reports to the Chief Human Resource Officer. This information was used by management to assist in developing recommendations for executive compensation for the nine month period ended December 31, 2008.