Cohen, T. R., Wolf, S. T., Panter, A. T., & Insko, C. A. (2011). Introducing the GASP scale: A new measure of guilt and shame proneness. Journal of Personality and Social Psychology, 100(5), 947‐966. doi: 10.1037/a0022641 Link: https://psycnet.apa.org/record/2011-08412-001
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