Billy turned 21 years old on Saturday, so he went with friends to a bar. He's never drank alcohol, and he did not handle it well - after a number of light beers and several rounds of tequila shots, he got violently ill. After this, he finds he can happily drink light beer without a problem, but he has a terrible aversion to tequila. Why can he easily drink beer, but not tequila?
Tequila is actually what made him ill, not the beer
Tequila is the US that resulted in the UR
The CS preexposure effect
The US preexposure effect
The flavor of tequila is more salient than the flavor of beer