Table 2.

Binomial models comparing performance in the four types of probe trials and the level of significance.

Probe trial	Estimate*	Standard error	z59	P
a	1.285	0.313	4.101	<0.001
b	0.619	0.271	2.287	0.022
c	0.547	0.268	2.040	0.041
d	1.012	0.292	3.465	0.001

^aThe same horizontal half of the face as in the standard trials but with novel faces; b: the other horizontal half of the same faces used in the standard trials; c: the other horizontal half of the novel faces; d: the left half (vertical) of the faces of the same persons used in the standard trials.

^*Coefficient estimate of binomial models with logit link, value of zero indicates a choice probability of 50%.