What are the other examples of classical conditioning?

Question

excluding the use of the bell in a dog

Answer 1

Here are two easy ones:

Phobias.  These typically result from the pairing of an originally neutral stimulus (bugs, snakes, white rats or bunnies) with a strong negative stimulus (frightened parents, pain, loud noises).  The originally neutral stimulus is then conditioned into being a strong negative stimulus, resulting in a sometimes quite irrational fear (with a decent chance of generalization as well!).  For more info, check out the Little Albert and Little Peter experiments.

Scent-Based emotions.  Ever find yourself aroused just because you smelled the perfume that someone you're romantically involved with normally wears?  Ever noticed you date women who use the same perfume?  Turns out we pair the distinct odors of other people - coffee, vanilla, Fantasy by Britney Spears - with the emotions and physiological states we experience when we're around them - arousal, fear, disgust.  These scent stimuli are originally neutral, but are paired repeatedly with a strong positive (or negative) stimulus, resulting in them being conditioned as  negative (or positive) stimuli.