This article presents normative information for the Defining Issue Test Version 2 (DIT2) schema scores and most common summary scores based on secondary data from the last 10 years DIT2 database (N = 73740, Mage = 23.11, SD = 7.87, the age range in year = 12–95) maintained by the University of Alabama’s Center for the Study of Ethical Development from 2011 to 2020. More specifically, the study provides (1) norms by education; (2) norms by gender and education; and (3) (...) norms by gender and age for the DIT2. The norms indicate a general but not consistent trend that moral reasoning scores increase by education level. Additionally, the Personal Interest and Maintain Norms scores are higher for males than females for all education levels and age groups while Postconventional, N2, and Type indicator scores are higher for females than males for all education levels and age groups. (shrink)

Item response theory (IRT) is a modern psychometric framework for estimating respondents’ latent traits (e.g., ability, attitude, and personality) based on their responses to a set of questions in psychological tests. The current study adopted an item response tree (IRTree) method, which combines the tree model with IRT models for handling the sequential process of responding to a test item, to score individual moral inclination for the CNI test—a broadly adopted model for examining humans’ moral decision-making with three parameters generated: (...) sensitivity to moral norms, sensitivity to consequences, and inaction preference. Compared to previous models for the CNI test, the resulting EIRTree-CNI Model is able to generate individual scores without increasing the number of items (thus, less subject fatigue or compromised response quality) or employing a post hoc approach that is deemed statistically suboptimal. The model fits the data well, and the subsequent test also supported the concurrent validity and the predictive validity of the model. Limitations are discussed further. (shrink)