Blog da Psicologia da Educação 
VÃdeo Autoshaping with grain vs. water USs
URL: http://www.youtube.com/watch?v=50EmqiYC9Xw
Comentários: An interesting comparison of a pigeon’s keypecking CR following autoshaping with a 5-s grain US compared to a 5-s water US. For each type of US, the video shows two normal speed clips and one slow motion clip. The different behaviors demonstrate that the nature of the CR can depend on the type of US. Pigeons tend to peck at grain with an open beak and closed eyes, and they drink water with relatively closed beak and open eyes. Thus, the pigeon appears to be responding to the CS as though the CS were a substitute for the US (see Jenkins & Moore, 1973). (0:49)
