WALK
This is a word known so well to many dogs that people will often spell it out to avoid having to say it. While it doesn't refer to a frequently experienced need on the part of a learner, it does allow the learner to express a thought they have about an important aspect of their life, and as such opens up opportunities for interaction. We have it here paired with POTTY, a related but distinct idea.
Meanings and uses
She uses it multiple times a day because she loves going for walks.
Go outside and walk around the neighborhood
Button sounds
"Walk"
Modeling techniques
Among our group of successful modelers, the following techniques were used successfully:
I would push the button before taking the learner for a walk.
If the learner pushed the button I would take the learner for a walk.
I pressed the button before putting on the learner's leash.
What seems to have worked well
Among our group of successful modelers, the following seemed to be helpful:
In the beginning, taking the learner for a walk every time the learner pushed the button.
Taking a walk at a regularly scheduled time and at least once a day
Pointing to the button after it had been pressed
What seems to have gotten in the way
After letting the learner repeatedly request and get walk, there was a need to wean her off of the 6+ walks a day she was getting.
Recording the word was a challenge given how much it sounded similar to "want", so I had someone else record it so it would sound more distinctive.