EX. 99-906 CERT Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In conjunction with the Annual Report to Shareholders on Form N-CSR of Neuberger Berman Advisers Management Trust (the "Trust") for the fiscal period ended December 31, 2005, as filed with the Securities and Exchange Commission (the "Report"), Peter E. Sundman, as Chief Executive Officer of the Trust, and John M. McGovern, as Treasurer, Principal Financial and Accounting Officer of the Trust, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Trust. Date: March 2, 2006 /s/ Peter E. Sundman Peter E. Sundman, Chief Executive Officer Neuberger Berman Advisers Management Trust /s/ John M. McGovern John M. McGovern Treasurer, Principal Financial and Accounting Officer Neuberger Berman Advisers Management Trust