Classical Conditioning
Classical conditioning is basically your brain learning to link things together automatically. It's like when your mouth waters at the smell of your favourite food - you've learned to associate that smell with eating.
The process works in three stages. Before conditioning, you have an unconditioned stimulus (something that naturally triggers a response) causing an unconditioned response (your natural reaction). During conditioning, this natural trigger gets paired repeatedly with a neutral stimulus (something that doesn't normally cause the response). After conditioning, that previously neutral thing becomes a conditioned stimulus that now triggers a conditioned response.
Pavlov's dogs perfectly demonstrate this - dogs naturally salivate when they see food, but after hearing a bell every time before feeding, they started salivating just at the bell sound. The Little Albert experiment showed how a 9-month-old baby learned to fear a white rat after it was paired with a loud, scary noise. Initially, Albert wasn't bothered by the rat, but after the conditioning, the rat alone made him fearful.
Quick Tip: Think of classical conditioning as your brain making automatic connections - like feeling anxious when you hear your exam alarm!