Training
Alex's training used a model/rival technique, where the student (Alex) observes trainers interacting. One of the trainers models the desired student behavior, and is seen by the student as a rival for the other trainer's attention. The trainer and model/rival exchange roles so the student can see that the process is interactive. During times when Pepperberg and an assistant were having a conversation and made mistakes, Alex would correct them.
This technique helped Pepperberg succeed with Alex where other scientists had failed in facilitating two-way communication with parrots. In later years, Alex sometimes assumed the role of one of Pepperberg's assistants by acting as the "model" and "rival" in helping to teach a fellow parrot in the lab. Alex sometimes practiced words when he was alone.
Read more about this topic: Alex (parrot)
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