Table II.

Features of face and zucchini referents and their NNs

Feature	Face similarity (N = 13)			P a	Zucchini similarity (N = 10)			P a	Face versus zucchini
	Referent	NN mean	t (12)		Referent	NN mean	t (9)		t (21)	P a
Size	0.06	0.08	1.06		−1.57	−0.21	−3.53	(<0.01)	2.79	(<0.02)
Contrast	0.30	−0.16	−2.36	(<0.05)	0.31	−0.09	−0.84		−0.63
Color (hue)	−0.66	−0.16	−2.02		0.22	−0.13	−1.56		−0.23
Color (lurid)	0.27	−0.19	−4.86	<0.005	−0.81	0.14	2.48	(<0.05)	−4.96	0.001
Shape (thin)	0.19	−0.12	−1.23		3.88	0.23	2.83	(<0.02)	−2.67	(<0.02)
Shape (horizontal)	−0.83	−0.26	−4.71	<0.005	4.00	0.45	5.65	<0.005	−7.57	0.0001
Shape (gabor jet)	NAb	−0.16	−1.76		NAb	−0.37	−4.09	<0.05	1.66
Animate	0.96	0.73	11.6	<0.0001	0.60	−0.17	−1.93		8.50	0.0001
Human	1.71	0.35	3.60	<0.05	0.60	−0.12	−1.71		3.70	0.05
Face	1.71	0.78	6.63	<0.001	2.24	−0.21	−2.56	(<0.05)	6.48	0.0001
Veg–fruit	−0.46	0.38	−10.9	<0.0001	−1.74	0.20	2.03		−6.09	0.0001

^a P values in upright font are Bonferroni corrected for number of comparisons. P values in italics and parenthesis are uncorrected.

^bThe gabor‐jet measure is one of pairwise similarity between the referent and each object, and so does not have a meaningful value in isolation.