Klockars A J, Varnum S W
College of Education, University of Washington, Seattle, Washington 98195, USA.
J Pers Assess. 1975 Aug;39(4):397-404. doi: 10.1207/s15327752jpa3904_13.
Examined two assumptions about the dimensionality of Rotter's I-E scale: First, the bipolarity of the two statements within each item pair; second, the unidimensionality of the overall construct. A revised I-E scale was constructed in which each of the statements from the original I-E scale was presented separately and the 367 subjects could accept or reject them independently. Correlations between statements within item pairs were low anti negative with only seven exceeding a value of -.20. The responses to the statements were factor analyzed resulting in six interpretable factors when rotated. Of the 23 item pairs, there were 11 pairs which loaded on the same factor in opposite directions while the other 12 loaded on different factors or on the same factor but in the same direction. A subsample consisting of 152 subjects also took the original I-E scale. The correlations between factor scores on the 6 factors and the original I-E score varied from .15 to .52. Both assumptions regarding Rotter's I-E scale were found untenable. Instead, it is suggested that the forced choice format be abandoned and the construct be thought of as a second order factor.
第一，每个项目对中两个陈述的两极性；第二，整体结构的单维度性。构建了一个修订后的内外控量表，其中原始内外控量表中的每个陈述都单独呈现，367名受试者可以独立接受或拒绝这些陈述。项目对中陈述之间的相关性较低且呈负相关，只有七个超过了-0.20的值。对陈述的回答进行了因子分析，旋转后得到六个可解释的因子。在23个项目对中，有11对在同一因子上呈相反方向加载，而另外12对加载在不同因子上或在同一因子上但方向相同。一个由152名受试者组成的子样本也进行了原始内外控量表测试。六个因子的因子得分与原始内外控得分之间的相关性从0.15到0.52不等。关于罗特内外控量表的两个假设均被证明是站不住脚的。相反，建议放弃强制选择形式，并将该结构视为一个二阶因子。
