Answer:
UCS: sticks part of the toy into the electrical outlet
UCR: frightened and crying
CS: toy
CR: frightened to toy
Step-by-step explanation:
Classical conditioning is a form of learning whereby a conditioned stimulus becomes associated with an unrelated unconditioned stimulus, in order to produce a behavioral response known as a conditioned response.
Unconditioned stimulus (UCS) is an agent that leads to a response without training. In this example, the child won't know that he can have electrical shock playing with toys.
Unconditioned response (UCR) is an automatic response to a UCS that's why the child starts crying and frightened.
Conditioned stimulus (CS) is a former natural stimulus that comes to elicit a given response after pairing with a UCS. In this situation, CS is when mom gives the same toys to the baby that was the reason for electrical shock.
Conditioned response (CR) is a learned response to a CS because the baby shows fear when he saw the same toys. It is his learned behavior.