Randomized response: a survey technique for eliminating evasive answer bias.

摘要: In every day life and in scientific research survey techniques are very commonly used to obtain information about populations (estimate some characteristics of given population). In comprehensive inquiries, detailed questionnaires include numerous items. Data on most of them are frequently easy to process merely by asking. But a few others are about highly personal matters, which people usually like to hide from others. Also, an inquirer is often hesitant in asking direct questions about private and confidential subjects, especially if the …