What is the test for remand to the Commissioner for Social Security benefits?

"The court shall have the power to enter, upon pleadings and transcript of record, a judgment affirming, modifying, or reversing the decision of the Secretary, with or without remanding the cause for a rehearing." 42 U.S.C. 405(g). In social security cases, the decision to remand to the Commissioner to award benefits is within the court's discretion. McAllister v. Sullivan, 888 F.2d 599, 603 (9^th Cir. 1989). If additional proceedings can remedy defects in the original administrative proceedings, a social security case should be remanded.