Revenge attitude: is it innate or acquired in human I am trying to understand what is the root cause for revenge? I understand anger is caused by the gap between expectation/anticipation and the reality. But as to revenge, I am not satisfied just with identity related or social order maintenance or reciprocity. While resources pointing to the direction of getting started, any valuable input, views, opinions and research outcomes would be very much helpful.
Open access sources from Google Scholar:

Jackson, J. C., Choi, V. K., &amp; Gelfand, M. J. (2019). Revenge: A multilevel review and synthesis. Annual Review of Psychology, 70, 319-345. https://doi.org/10.1146/annurev-psych-010418-103305              

Lambert, A. J., Eadeh, F. R., &amp; Hanson, E. J. (2019). Anger and its consequences for judgment and behavior: Recent developments in social and political psychology. Advances in Experimental Social Psychology, 60, 103-173.  https://psyarxiv.com/svcux/download?format=pdf