Before feeding your aquarium fish, you tap on the glass. What, in this case, is food? Knocking on glass?

Before feeding your aquarium fish, you tap on the glass. What, in this case, is food? Knocking on glass? Can you imagine how the fish behavior will develop in the future?

Food is an unconditioned irritant, and knocking is a conditioned one; with a prolonged combination of these factors, a conditioned reflex will arise, and the fish will swim to the feeder with any tapping. If you knock on the aquarium and at the same time turn on the light or stop reinforcing the conditioned stimulus with an unconditioned one, the developed reflex will be inhibited.

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