Letters Laced with _________________ Sent Through the US Postal Service

question 20

Short Answer

Letters laced with _________________ sent through the US Postal Service to media outlet offices represented an act of domestic bioterrorism in 2001.​

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Definitions:

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without prior conditioning or learning.

Conditioned Response

A conditioned response is a learned reaction to a previously neutral stimulus that has become associated with an unconditioned stimulus through conditioning.

Unconditioned Stimulus

In classical conditioning, it is a stimulus that naturally and automatically triggers a response without prior learning.

Conditioned Stimulus

A previously neutral stimulus that, after being paired with an unconditioned stimulus, elicits a conditioned response.