When she was little, Melanie ate corn nuts right before riding a roller coaster. The ride made her motion sick, and she threw up. Since then, Melanie has had an aversion to corn nuts, even though the corn nuts did not cause her to be sick. Which type of implicit memory is at play?

CLASSICAL CONDITIONING.

Explanation:

Implicit memory is one of the two main types of long-term human memory. It is acquired and used unconsciously, and can affect thoughts and behaviours.

Classical conditioning is a type of implicit memory where one unconsciously learns to associate one thing with another.

The classic example of this is Pavlov’s dog. This refers to an experiment in which a bell was sounded before dogs were given a meal. Over time, the dogs started to associate the sound of the bell with getting a meal. As a result, they began to salivate at the sound of the bell.

In Melanie's case, she has an aversion to corn nuts, even though the corn nuts did not cause her to be sick because of the past experience she had when she was sick and threw up after eating corn nuts right before riding, so over time she has unconsciously learnt to associate her past sickness with corn nuts.

Therefore, the type of implicit memory at play in Melanie's case is CLASSICAL CONDITIONING.