前言：目的：探讨两水平方差成份模型在评价调查者间变异的应用价值。
Objectives: To explore the applicability of two level variance component model in research on variability between interviewers.
结论：对于问卷项目的应答为连续性正态分布的数据，在拟合重复调查的情形下，可以采用两水平方差成份模型评价问卷项目应答的信度。
Conclusion:In the condition of unrepeated measurement, the variability between interviewers can be estimated by fitting two level variance component model for normally distributed data.
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