Gretchen has been trying to teach glen, a preschooler, to pull up his pants by himself after using the toilet. she has been using a shaping model. she began by reinforcing him with an animal cracker for bending over and touching his waistband. he is now doing that consistently. next, she wants him to start pulling his pants a little bit. however, she has become very frustrated because glen continues to simply touch his pants rather than pull a bit. what should gretchen do?

Gretchen should add a prompt of some sort like, a verbal or physical prompt, to help make the shaping process more efficient.

Forming refers to a conditioning model utilized principally in the experimental investigation of conduct. The strategy utilized is differential support of progressive approximations. It was presented by B. F. Skinner with pigeons initially and stretched out to puppies, dolphins, people and different species.

the answer would be a)henry grady because he came up with the term "new south"