Table 1 Statistical analysis results of behavioral data from Pavlovian conditioned approach baseline and reward omission session on sign-tracking female rats.

I Behavioral parameters
Variable	Effect	Exp(B)	P	Confidence interval Lower Upper
Lever presses	Exposure	1.267	0.56	0.561	2.859
	Session	1.426	0.43	0.591	3.443
	Exp*Session	0.885	0.88	0.376	3.110
Lever latency	Exposure	0.948	0.98	0.005	190.2
	Session	0.009	0.12	0.001	3.425
	Exp*Session	0.585	0.88	0.000	1055
Lever probability	Exposure	0.910	*0.08*	0.818	1.012
	Session	1.255	< 0.001	1.123	1.404
	Exp*Session	1.099	0.19	0.954	1.266
Receptacle probability	Exposure	0.870	*0.08*	0.741	1.021
	Session	1.514	< 0.001	1.289	1.778
	Exp*Session	0.985	0.88	0.801	1.212
RE 10 s after CS offset	Exposure	0.872	0.138	0.586	1.300
	Session	0.804	0.352	0.547	1.180
	Exp*Session	2.041	0.016	1.141	3.653
RE latency after CS offset	Exposure	1.529	0.230	-1,53	0,391
	Session	32.17	< 0.001	-3,00	-1,391
	Exp*Session	2.226	0.151	-1,53	0,391
Variable	Effect	F	P	Df
Elevation score	Exposure	0.875	0.360	1	__
	Session	0.692	0.415
	Exp*Session	1.240	0.278
LP 10 s after CS onset and 10 s before CS offset on baseline session	Exposure	0.660	0.426	1
	Time	13.24	0.001
	Exp*Time	0.176	0.678
LP 10 s after CS onset and 10 s before CS offset on omission session	Exposure	0.014	0.906	1
	Time	8.221	0.009
	Exp*Time	0.073	0.788
RE 10 s after CS onset and 10 s before CS offset on baseline session	Exposure	0.508	0.484	1
	Time	8.853	0.007
	Exp*Time	0.059	0.809
RE 10 s after CS onset and 10 s before CS offset on omission session	Exposure	0.579	0.455	1
	Time	2.559	0.125
	Exp*Time	0.015	0.903

Behavioral analyses were conducted using a generalized linear model with a Poisson distribution and a log link function or using a two-way ANOVA depending on the data distribution. Group comparison on lever presses 10 s before CS offset were performed using Mann–Whitney U test or t-test depending on data distribution. Underlined bold type indicates significant differences (p values are described on the table). Italics bold type indicates marginal differences (see methods). CS (conditional stimulus); Exp (exposure); LP (lever presses); RE (receptacle entries).

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