A stimulus that elicits a response from an organism without learning is ______.

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An unconditioned stimulus is a stimulus that elicits a response from an organism without the need for prior learning or conditioning. This is in contrast to a conditioned stimulus, which only elicits a response after being associated with a prior unconditioned stimulus through conditioning. Primary and secondary stimuli are not commonly used terms in classical conditioning.

A Stimulus That Elicits a Response from an Organism Without