The results of a survey of 292 federal district judges concerning how they interpret and apply the 1983 amendments to Federal Rule of Civil Procedure 11 (before the 1993 amendments). Based on the judges' hypothetical reactions to actual cases in which Rule 11 sanctions were requested, the study outlines the judges' standards and rationales for imposing sanctions, the kinds of sanctions imposed, and the relationship between the judges' opinions and their expectations of how their colleagues would rule on the same issues.