Compare methods

	Collective Narcissism Scale	Partisan Social Identity Scale
Field	Political Psychology	Political Psychology
Family	Latent structure	Latent structure
Year of origin	2009	2015
Originator	Agnieszka Golec de Zavala and colleagues	Leonie Huddy, Lilliana Mason & Lene Aaroe; Steven Greene
Type	Attitude scale for defensive group identity	Identity-strength scale for partisanship
Seminal source	Golec de Zavala, A., Cichocka, A., Eidelson, R., & Jayawickreme, N. (2009). Collective Narcissism and Its Social Consequences. Journal of Personality and Social Psychology, 97(6), 1074-1096.	Huddy, L., Mason, L., & Aaroe, L. (2015). Expressive Partisanship: Campaign Involvement, Political Emotion, and Partisan Identity. American Political Science Review, 109(1), 1-17.
Aliases	Group Narcissism Scale, National Collective Narcissism Measure, Golec de Zavala Collective Narcissism Scale, In-Group Grandiosity Scale	Partisan Identity Strength Scale, Expressive Partisanship Scale, Huddy-Mason-Aaroe Partisan Identity Measure, Partisan In-Group Identification Scale
Related	3	3
Summary	The Collective Narcissism Scale, introduced by Agnieszka Golec de Zavala and colleagues in 2009, measures an emotional investment in an unrealistic belief about an in-group's greatness coupled with a demand that this greatness be recognized by others. Unlike secure group identification, collective narcissism is defensive and contingent on external validation, and it predicts intergroup hostility, perceived threat, prejudice, conspiracy belief, and support for aggression toward out-groups. The scale is widely applied to national identity, where it distinguishes a grandiose, grievance-driven nationalism from ordinary patriotism or in-group satisfaction.	The Partisan Social Identity Scale treats party identification as a social identity in the sense of Henri Tajfel rather than as a running tally of policy agreement. Building on Steven Greene's social-identity approach and crystallized in Huddy, Mason, and Aaroe's 2015 study of expressive partisanship, the scale adapts standard group-identification items to ask how central, important, and emotionally engaging a person's party is to their sense of self. Strongly identified partisans are shown to feel action-oriented emotions, anger when their side is threatened and enthusiasm when reassured, and to participate in campaigns more than issue-based measures of partisanship predict.