Table 1.

Previous studies on N170 ethnicity effects, sorted by task categories.

Study	Participants' ethnic group	Other-race faces	Images	Task	N170 Amplitude
					Upright faces	Inversion effect
SUPERFICIAL TASKS; CATEGORY OR IDENTITY INFORMATION NOT TASK-RELEVANT
Caldara et al., 2003	Caucasian	Asian	Grayscale	“Count butterfly stimuli”	Own = other	Not tested
Gajewski et al., 2008	Exp. 1: Caucasian	Asian, African	Grayscale	“Detect door stimuli”	Own < other	No basic effect
	Exp. 2: Asian	Caucasian, African	Grayscale	“Detect door stimuli”	Own = other	No basic effect
Wiese et al., 2009	Caucasian	Asian	Grayscale	“Stimulus upright/inverted?”	Own = other	Own = other
Vizioli et al., 2010a	Asian/Cauc.	African, Asian/Cauc.	Grayscale	“Detect red/green faces”	Own = other	Own > other
Vizioli et al., 2010b	Asian/Cauc.	Asian/Cauc.	Grayscale	“Press if stimulus is inverted”	Own = other	Not tested
Balas and Nelson, 2010	Caucasian	African-American	Color	“Stimulus upright/inverted?”	Own < other	No basic effect
Ofan et al., 2011	82% Caucasian, 18% Asian	African-American	Two-tone	“Target word pleasant/unpleasant?”	Own = other	Not tested
Ofan et al., 2013	Caucasian	African-American	Two-tone	“Target word pleasant/unpleasant?”	Own = other	Not tested
Senholzi and Ito, 2013	Caucasian	African-American	Color	“Detect butterfly stimuli”	Own = other	Not tested
Chen et al., 2013	Asian	Caucasian	Grayscale	“Count flowers”	Own = other	Own = other
FACE CATEGORY TASK-RELEVANT
Caldara et al., 2004	Caucasian	Asian	Grayscale	“Face Asian or European?”	Own = other	Not tested
He et al., 2009	Caucasian	Asian, African-American	Color	“Face female or male?”	Own < other	Not tested
Brebner et al., 2011	Caucasian	African-American	Color	“Face older or younger than 21?”	Own < other	Not tested
Caharel et al., 2011	Caucasian	Asian, African	Color	“Face own- or other-race?”	Own < other	Own > other
Montalan et al., 2013	Caucasian	African	Grayscale	“Face African or Caucasian?”	Own < other	Own > other
Senholzi and Ito, 2013	Caucasian	African-American	Color	“Race same as in last image?”	Own > other	Not tested
FACIAL IDENTITY TASK-RELEVANT
James et al., 2001	Caucasian	Asian	Grayscale	“Face learned or new?”	Own = other	Not differentially tested
Herrmann et al., 2007	Caucasian	Asian	?	“Face same as in last image?”	Own < other	Not tested
Stahl et al., 2008	Caucasian	Asian	Grayscale	“Face learned or new?”	Own < other	Not tested
Walker et al., 2008	Caucasian	African	Grayscale	“Face same as in last image?”	Own < other	Not differentially tested
Stahl et al., 2010	Caucasian	Asian	Grayscale	“Face learned or new?”	Own < other	Not tested
Herzmann et al., 2011	Asian/Cauc.	Asian/Cauc.	Grayscale	“Face learned or new?”	Own = other	Not tested
Wiese, 2012	Caucasian	Asian	Grayscale	“Face learned or new?”	own < Other	Not tested
Senholzi and Ito, 2013	Caucasian	African-American	Color	“Face same as in last image?”	Own < other	Not tested
Wiese et al., 2013	Asian/Cauc.	Asian/Cauc.	Grayscale	“Face learned or new?”	Own < other	Not tested