Table 1.

Choice, preference and progressive ratio under food restriction, ad libidum food access and hormone treatment reversal.

	Percent Cocaine Choice (mean ± SEM)			Proportion Cocaine Preferring			Cocaine PR (mean ± SEM)		Food PR (mean ± SEM)
	Food Restricted	Ad Lib Food	Hormone Reversal	Food Restricted	Ad Lib Food	Hormone Reversal	Food Restricted	Ad Lib Food	Food Restricted	Ad Lib Food
Vehicle	32.3 ± 7.1	32.4% ± 6.1	43.2% ± 8.2	18.2%	13.6%	*40.0%	12.6 ± 1.3	10.8 ± 1.7	12.6 ± 0.8	*10.7 ± 0.7
EB	63.7% ± 7.8	49.7% ± 9.1	44.8% ± 9.2	52.4%	42.9%	40.0%	15.3 ± 1.1	14.9 ± 1.1	13.2 ± 0.9	*14.8 ± 1.0

^*= p<0.05 for within subjects comparison.

PR means under food restriction were calculated from the subset of subjects tested for ad lib PR.