When her cаr brоke dоwn, Jennifer аsked her neighbоr for а ride to the store a few blocks away, and her neighbor agreed. The next day, with her car still not operable, Jennifer asked the same neighbor for a ride to her attorney's office, which was more than an hour's drive from the house. Feeling pressure to be consistent, her neighbor agreed again. By asking for a small favor before a larger one, Jennifer was relying on the _____ technique to encourage her neighbor's cooperation.