Answer:
While it might be found all over the world, it's rare enough that not everyone can produce them. Humans have also placed value on gold.
I believe the answer is Shaping.
Shaping is a reinforcement technique which use a reward that given gradually after the subject is showing a certain desired traits.
On parakeets, this could be done by giving them a food reward everytime they move their head closer to the place where we want it to be (closer to your cheek)
A sticker chart designed to reward a child for every ten stickers earned for doing household chores is an example of a <u>token economy</u>.
<h3>What is a
Token Economy?</h3>
This is a widely used method to treat children with Attention Deficit / Hyperactivity Disorder, which seeks to reinforce a specific capacity or habit in the child.
The method consists of agreeing with the child a series of activities which will have as a reward a token or other symbolic element, with which after accumulating a certain number, the child will be rewarded.
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