Definition, Meaning & Synonyms
unconditioned-stimulus
Noun
ˌʌnkənˈdɪʃənd ˈstɪmjələs
Definition
An unconditioned stimulus (US) is a stimulus that naturally and automatically triggers a response without any prior conditioning.
Examples
- In Pavlov’s experiments, food is an example of an unconditioned stimulus as it automatically causes salivation in dogs.
- A loud noise can serve as an unconditioned stimulus, causing an instinctive startle response in humans.
Meaning
In psychology and particularly in classical conditioning, the unconditioned stimulus is a key component that elicits an innate response without the need for learning.
Synonyms
- Natural stimulus
- Inherent stimulus
