Harry Potter and the Deathly Hallows: Part 2: Dragon Escape
Science → Psychology → Classical Conditioning
In their journey to Belatrix's vault, Harry, Ron, and Hermione encounter a dragon, which starts to attack the group. The elves make a noise to subdue the dragon. One of the elves explains that the dragon has been conditioned to expect pain when it hears the noise, which allows the group to move past the dragon unharmed.
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