New partisan-identity scales can be built via a seven-step validation protocol.

Evidence

(1) the identification of domain and items generation via a review of the literature and expert interviews; (2) we assess content validity via cognitive interviews; (3) we develop a scale and we administer it to a large sample; (4) we shorten the scale to assure parsimony via a IRT model; 5) we test dimensionality via both an exploratory and confirmatory factor analysis; (6) we test reliability via Cronbach’s alpha; and finally (7) we test construct validity. — Sabrina J. Mayer and Luana Russo, What one is not, 35

Categorization

• XREF: A replicable scale-development recipe relevant to anyone building psychometric instruments. — connects to: A validated partisan identity measure outperforms traditional strength measures at predicting behavior — Alexa Bankert and Leonie Huddy, Partisan Identity Scale (PIS), 143; Politicized identity develops through a sequence of gradual steps — John T. Jost and Jim Sidanius, Political Psychology, 4420; Effective intergroup contact requires seven preconditions in political contexts. — Rachel Hartman et al., Interventions to Reduce Partisan…, 45 (+2 more)

Broader Connections

• New psychological instruments must be tested for incremental validity beyond established measures #qualifies (0.82) — Sherman A. Lee, Chelsea A. Reid, Stephen D. Short, Jeffrey A. Gibbons, Ruth Yeh, and Matthew L. Campbell, Fear of Muslims, 116
• Politicized identity develops through a sequence of gradual steps #corroborates (0.78) — John T. Jost and Jim Sidanius, Political Psychology, 4420
• Validated NPI measurement can flexibly target one, some, or all parties #exemplifies (0.76) — Sabrina J. Mayer and Luana Russo, What one is not, 118
• Effective intergroup contact requires seven preconditions in political contexts. #complicates (0.72) — Rachel Hartman et al., Interventions to Reduce Partisan…, 45