Every time three-year-old Erwin cried, his father would immediately pick him up, and he would stop crying.Now Erwin is a real crybaby.In this case, what has his father's behaviour acted as with respect to Erwin's crying behaviour?

Question

Quizplus · Accepted Answer

Erwin's father picking him up every time he cried acted as a positive reinforcer because it added a desirable outcome (being picked up) immediately after the crying behavior, which increased the likelihood of the behavior (crying) being repeated.

Every Time Three-Year-Old Erwin Cried, His Father Would Immediately Pick