Julie Has a Desk Right Next to Her Manager's Office

Multiple Choice

Julie has a desk right next to her manager's office. Whenever her manager is in his office, Julie makes sure that she works hard at her computer. However, if the manager is away from his office, she often works much more slowly and takes more breaks. In this case, the manager being in his office is acting as a(n) _____ for working hard.

A) positive reinforcer
B) negative reinforcer
C) discriminative stimulus
D) unconditioned stimulus