Define 'stimulus' and provide an original example not mentioned in the video.

A stimulus is anything that stimulates your senses (hear, see, smell, taste, or touch). Example: The smell of freshly baked cookies.

What is the key difference between an unconditioned stimulus and a conditioned stimulus?

An unconditioned stimulus elicits a natural, unlearned response, while a conditioned stimulus elicits a learned response.

The term 'unconditioned' signifies that the response is natural and doesn't require prior learning or conditioning.

The sound of the refrigerator door

A trial is the presentation of the neutral stimulus followed by the unconditioned stimulus.

I can explain how classical conditioning modifies behavior.

1
A stimulus is anything that stimulates your senses and can produce a response.
2
An unconditioned stimulus triggers a physiologic response naturally, while a conditioned stimulus is learned.
3
Classical conditioning occurs when a neutral stimulus is paired with an unconditioned stimulus until the neutral stimulus elicits the same response.