The Respondent must be told at the beginning of the interview that recording techniques are to be used unless this knowledge might bias the Respondent's subsequent behaviour.
必须在访问开始时告诉被访者将使用记录设备，除非这可能偏导被访者随后的行为。
Strategic bias----A respondent provides a biased answer to a contingent valuation survey in order to influence a particular outcome.
战略偏差——提供给不确定价值测量偏差答案，而影响到专项支出的标准。
Strategic bias----A respondent provides a biased answer to a contingent valuation survey in order to influence a particular outcome.
战略偏差——提供给不确定价值测量偏差答案，而影响到专项支出的标准。
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