A method of data collection, comprises generating questions for response that include at least one data integrity trigger comprising a question or series of questions at least one response to which indicates an unconsidered response. Responses to the plurality of questions are obtained from a plurality of respondents, and each respondent's responses to the data integrity trigger questions are compared against trigger responses that indicate an unconsidered response. If a respondent's response to one or more integrity trigger questions indicates an unconsidered response, the respondent is flagged as suspect. The survey administrator can then optionally contact the suspect respondent to verify the accuracy of his or her responses, and/or discard the suspect respondent's responses.