For question 99, should Ho be rejected? If rejected, state the alpha level

The technique of injecting chemical tracers into the auditory thalamus and

staining the brain tissue to see where those neurons project their axons was used by LeDoux to discover (a) that rats show conditioned fear (b) that rabbits show conditioned fear (c) which neurons throughout the body are involved in the fear response (d) the brain circuits involved in the fear response

Harry Harlow's famous experiments with isolated newborn monkeys provide convincing evidence that primates possess a strong ______

a. need for contact c. activity drive b. need to manipulate objects d. need to control their environment