Gretchen has been trying to teach Glen, a preschooler, to pu…

Gretchen has been trying to teach Glen, a preschooler, to pull up his pants by himself via shaping. She began by delivering reinforcement for bending over and touching his waistband. Glen is now doing that consistently. Next, Gretchen targeted Glen pulling his pants up a little bit. However, Glen continues to simply touch his pants instead of pulling them up a bit.