Deontological Study

From Xu, Z., Ma, H. (2016). How can a deontological decision lead to moral behavior? The moderating role of moral identity. Journal of Business Ethics, 137(3), 537-549. doi:10.1007/s10551-015-2576-6

Please explain the following from the above study case:

1. What were the authors seeking to clarify in this article?
2. Describe an "integrated approach" to ethical decisions.
3. How did the authors attempt to build upon Kohlberg's theory?