Table 1. Development Studies.

Experimental design for studies testing effects of dopamine D₁ (SCH 23390, 1 µM) and D₂ (sulpiride, 1 µM) receptor antagonists on the development of 1% sucrose place conditioning.

Group	Pretest (5 min)	Conditioning (30 min)	Posttest (5 min)
Water	Water	Water	Water
Antagonist	Water	Antagonist	Water
Sucrose	Water	Sucrose	Water
Antagonist/Sucrose	Water	Antagonist/Sucrose	Water