It is a form of Pavlovian conditioning by pairing 2 neutral stimuli as well as pairing one of those stimuli with an unconditioned stimulus. It is also known as sensory conditioning.

SENSORY PRECONDITIONING: "Sensory preconditioning uses pairs of stimulus that are conditioned and unconditioned for responses."
Cite this page: Nugent, Pam M.S., "SENSORY PRECONDITIONING," in, April 13, 2013, (accessed January 21, 2018).