According to rescorla's theory, the cs must the ucs or conditioning does not occur.

According to Rescorla's theory, the conditioned stimulus (CS) must predict the unconditioned stimulus (UCS) or conditioning does not occur. In his theory Robert Rescorla described the changes in associative strength (V) between a signal (conditioned stimulus, CS) and the subsequent stimulus (unconditioned stimulus, US) as a result of a conditioning trial.

wavelength variability is the right one

as technology advances, new experiments often expose problems in accepted theories. c

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