Notes Concerning Taste Aversion
Taste aversion does not require cognitive awareness to develop—that is, the subject does not have to consciously recognize a connection between the perceived cause (the taste) and effect (the negative feeling). In fact, the subject may hope to enjoy the substance, but the body handles it reflexively. Conditioned taste aversion illustrates the argument that in classical conditioning, a response is elicited.
Also, taste aversion generally only requires one trial. The experiments of Ivan Pavlov required several pairings of the neutral stimulus (e.g., a ringing bell) with the unconditioned stimulus (i.e., meat powder) before the neutral stimulus elicited a response. With taste aversion, after one association between sickness and a certain food, the food may thereafter elicit the response. In addition, lab experiments generally require very brief (less than a second) intervals between a neutral stimulus and an unconditioned stimulus. With taste aversion, however, the hotdog a person eats at lunch may be associated with the vomiting that person has in the evening.
If the flavor has been encountered before the subject becomes ill, the effect will not be as strong or will not be present. This quality is called latent inhibition. Conditioned taste aversion is often used in laboratories to study gustation and learning in rats.
Aversions can also be developed to odors as well as to tastes.
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