If it was my guess it would be actual capacity but dont take my word for it
Does this come from a book
That statement is true,
By examining the sales person's facial expression you could spot which words that come out from their voice are sincere.
If the sincerity is spotted when the salesperson is asking for the problem that you have and the solution that they give, they might genuinely believes that their product might help you.
Answer:
In the context of classical conditioning, closing the door has become a(n) conditioned stimulus.
Explanation:
A conditioned stimulus, in classical conditioning, can be defined as a previously neutral stimulus that has become associated with an unconditioned stimulus, beginning to trigger a response.
It is very likely that closing a door didn't mean much to students in general (neutral). However, it was paired with the announcement of a quiz. Announcing a quiz (unconditioned) triggers a response - students feel surprised, anxious, worried, etc. After pairing up both stimuli a few times, students learn to associate them. Now, closing the door is a conditioned stimulus. Even if the professor does not announce a quiz, students will feel anxious and worried just by watching him close the door.