"Kareem laughs whenever his neck is touched. Now before touching his neck, his mommy says "gotcha." Pretty soon, as soon as she says "gotcha," Kareem starts to laugh. In this example, what is the conditioned stimulus?"

Question Options:

a. Laughing when his neck is touched

b. Saying “gotcha”

c. Laughing when he hears “gotcha”

d. Touching his neck

The conditioned stimulus is TOUCHING HIS NECK.

Explanation: Conditioned stimulus can be defined as a neutral psychological response that after becoming associated with an unconditioned response eventually comes to trigger a conditioned response.

His mummy saying gotcha is an unconditioned stimulus, laughing when his neck is being touch is an unconditioned response, touching his neck is the conditioned stimulus.