An e-mail exchange between Karen Pryor and Richard Orser:
Richard: If you wouldn't mind, I would like to ask a question: If I am reinforcing several behaviors (by clicking/treat) e.g., sit, sit/stay, & come, I am making these behaviors more likely to occur when I am around the puppy (10 weeks old). But, then I have to further shape each behavior to occur only when I present a certain hand or verbal signal (a different one for each behavior).