Two roommates, Brian and Corey, share a pet dog together. When the dog attempts to jump on Brian, Brian blocks the dog and gives a stern, "no jumping!". When the dog attempts to jump on Corey, Corey allows the dog on him. The dog continues to jump on both Brian and Corey. Which factor may be contributing to the lack of effectiveness for Brian's blocking + reprimanding procedure? Group of answer choices contingency immediacy motivating operations magnitude