折半信度是测定内在一致性的最古老的方法之一。具体做法是将组成研究工具的各项目(如组成一份问卷中的各个题目)分成两部分,分别加以计分,对这两个部分的数值进行相关分析,然后采用Spearman-Brown公式计算信度。折半方法常用的有前后折半法、奇偶折半法。 Half reliability is one of the oldest methods of measuring internal consistency. This is done by dividing each of the items that make up the research tool into a single part of the questionnaire, dividing it into two parts, analyzing the values ​​of the two parts separately, and then using the Spearman-Brown formula to calculate the reliability . Half-fold method commonly used before and after the half-fold method, odd and even half-method.