The Opposite of Republican: Polarization and Political Categorization. - Evan Heit; Stephen P. Nicholson (Cogn. Sci., 2010)

Knowledge and Political Categorization. - Evan Heit; Stephen P. Nicholson (CogSci, 2012)

Tracking the Response Dynamics of Implicit Partisan Biases. - Nicholas D. Duran; Stephen P. Nicholson; Rick Dale (CogSci, 2015)

Missing the Party: Political Categorization and Reasoning in the Absence of Party Label Cues. - Evan Heit; Stephen P. Nicholson (Top. Cogn. Sci., 2016)