A major advantage of using the sound of a whistle while training ...

[lak]

A major advantage of using the sound of a whistle while training dolphins is that the whistle can be sounded _________ following the correct behavior.
 
  Fill in the blank(s) with correct word

Question 2

At the zoo one day, you notice a zookeeper leading a rhinoceros into a pen by simply whistling at it. It is likely that the whistle has been paired with _________ and is now functioning as a(n) _________.
 
  Fill in the blank(s) with correct word

[Joc]

Answer to Question 1

immediately

Answer to Question 2

food; secondary reinforcer