Identity Fusion Research


Identity fusion is defined as a visceral feeling of oneness with the group, that is associated with increased permeability of the boundary between the personal and social self (Swann, Jetten, Gómez, Whitehouse, & Bastian, 2012).

Recent research has found that identity fusion is related to endorsement of extreme actions for the group, disposition to self-sacrificial behaviors, desire to remain in the group, donation funds to help needy group members, and other pro-group behaviors (Gómez, Morales, Hart, Vázquez, & Swann, 2011; Swann, Gómez, Dovidio, Hart, & Jetten, 2010; Swann, Gómez, Huici, Morales, & Hixon, 2010).



What is the Dynamic Identity Fusion Index?


The Dynamic Identity Fusion Index (DIFI) is a digital version of the prior pictorial item of identity fusion developed by Bill Swann, Ángel Gómez, and colleagues (Swann, Gómez, Seyle, Morales, & Huici, 2009), typically used in paper and pencil surveys.

The DIFI is an alternative instrument to the original pictorial item, and allows for (a) more accurate outputs in a continuous scale, (b) measure of identity fusion within web-based questionnaires, and (c) simultaneous assessment of distance and overlap.





Gómez, Á., Brooks, M. L., Buhrmester, M. D., Vázquez, A., Jetten, J., & Swann, W. B. Jr. (2011). On the nature of identity fusion: Insights into the construct and a new measure. Journal of Personality and Social Psychology, 100(5), 918-933.

Gómez, Á, Morales, J. F., Hart, S., Vázquez, A., & Swann, W. B., Jr. (2011). Rejected and excluded forevermore, but even more devoted: Irrevocable ostracism intensifies loyalty to the group among identity-fused persons. Personality and Social Psychology Bulletin, 37(12), 1574-1586.

Gómez, Á., Seyle, D. C., Huici, C., & Swann, W. B. Jr. (2009). Can self-verification strivings fully transcend the self-other barrier? Seeking verification of ingroup identities. Journal of Personality and Social Psychology, 97(6), 1021-1044.

Swann, W. B. Jr., Gómez, A., Dovidio, J. F., Hart. S., & Jetten, J. (2010). Dying and killing for one's group: Identity fusion moderates responses to intergroup versions of the trolley problem. Psychological Science, 21(8), 1176-1183.

Swann, W.B., Jr., Gómez, A., Huici, C., Morales, F., & Hixon, J. G. (2010). Identity fusion and self-sacrifice: Arousal as catalyst of pro-group fighting, dying and helping behavior. Journal of Personality and Social Psychology, 99(5), 824-841.

Swann. W. B. Jr., Gómez, A., Seyle, D. C., Morales, J. F., & Huici, C. (2009). Identity fusion: The interplay of personal and social identities in extreme group behavior. Journal of Personality and Social Psychology, 96(5), 995-1011.

Swann, W. B. Jr., Jetten, J., Gómez, Á, Whitehouse, H., & Bastian, B. (2012). When group membership gets personal: A theory of identity fusion. Psychological Review, 119(3), 441-456.

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About the Dynamic Identity Fusion Index (DIFI) by Juan Jiménez is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

About the Dynamic Identity Fusion Index (DIFI)

About the Dynamic Identity Fusion Index (DIFI)