An Investigator Presents a Conditioned Stimulus Followed by an Unconditioned

question 2

Multiple Choice

An investigator presents a conditioned stimulus followed by an unconditioned stimulus until an animal is classically conditioned. Then she exposes the animal to an extinction procedure. If she waits a while and then tests the animal again, she is likely to see

• A) spontaneous recovery.
• B) backward conditioning.
• C) generalization.
• D) discrimination.

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Definitions:

Genetic Locus

A specific, fixed position on a chromosome where a particular gene or genetic marker is located.

X Chromosomes

One of the two sex chromosomes, present in both males (XY) and females (XX), that determine sexual differentiation in humans.

Phenylalanine Hydroxylase

An enzyme that converts phenylalanine into tyrosine, thus playing a crucial role in amino acid metabolism.

Phenylketonuria (PKU)

A genetic disorder characterized by an inability to metabolize the amino acid phenylalanine, leading to developmental problems if untreated.