Measuring Four Perspectives of Justice Sensitivity With Two Items Each

Abstract People differ systematically in their vulnerability to injustice. We present two-item scales for the efficient measurement of justice sensitivity from 4 perspectives (victim, observer, beneficiary, perpetrator). In Study 1 using a quota-based sample of German adults, a latent state–trait analysis revealed the factorial validity and high reliabilities of the scales. In Study 2 employing a large random sample, we tested for measurement invariance of the items within the context of our short 2-item scales compared to the original 10-item scales. Multigroup confirmatory factor analyses confirmed that the validity of the indicators and the internal structure of the assessed constructs did not change across item contexts. In both studies, correlations with personality dimensions and life satisfaction provide evidence for the validity of our scales. With the presented instrument, future research can extend scientific knowledge regarding the role of individual differences in reactions to injustice for the explanation of well-being and physical health. Acknowledgments We thank Nadine Knab for literature searches, Kerstin Dorsch for help in preparing the manuscript, and Jane Zagorski for helpful comments on this article. Notes Translation of the original German scales provided by us. The Spearman–Brown correction is appropriate for accounting for the fact that uncorrected coefficients apply to single items and thus underestimate the reliability of the two-item scales.