May 6, 2012
premack principle
Named after psychologist David Premack.
The Premack Principle states that the opportunity to engage in a preferred activity can also be used to reinforce a less-preferred activity.
Loading...
seen from United States
seen from Russia
seen from China
seen from China
seen from Germany
seen from China
seen from Kazakhstan
seen from Russia
seen from Malaysia
seen from Germany
seen from United States
seen from Malaysia
seen from Maldives
seen from China
seen from Australia
seen from United States
seen from United States
seen from China
seen from Germany
seen from Japan
premack principle
Named after psychologist David Premack.
The Premack Principle states that the opportunity to engage in a preferred activity can also be used to reinforce a less-preferred activity.
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
Free to watch • No registration required • HD streaming