Evidence suggests that asking about future intentions to get screened for colorectal cancer (CRC) before the actual question about past screening behavior increases the accuracy of self-reports, possibly because respondents are under less social pressure to over-report in this context. We describe the results of two experiments that investigate this, along with survey mode (mail vs. telephone), on self-reported CRC screening accuracy. We found that asking about future intentions significantly lowered reports of past CRC screening in one experiment but not the other. We also observed variable impact of survey mode.