Inclusion of Other in the Self Scale (IOS)

Aron, A., Aron, E. N., & Smollan, D. (1992). Inclusion of other in the self scale and the structure of interpersonal closeness. Journal of Personality and Social Psychology, 63 (4), 596-612. https://doi.org/10.1037/0022-3514.63.4.596

Self/Identity

Relational Self-Change Scale

Mattingly, B. A., Lewandowski, G. W., Jr., & McIntyre, K. P. (2014). “You make me a better/worse person”: A two-dimensional model of relationship self-change. Personal Relationships, 21, 176-190. doi: 10.1111/pere.12025

Self/Identity

Self-Expansion Preference

Hughes, E.K., Slotter, E.B., & Lewandowski, G.W., Jr. (2020). Expanding who I am: Validating the preferences for self-expansion scale. Journal of Personality Assessment, 102, 792-803. https://doi.org/10.1080/00223891.2019.1641109

Self/Identity