A test constructor is interested in discovering how long a set of sub-tests

Your friend was diagnosed with sickle-cell anemia. Because you do not know much about the disorder you ask for an explanation. What are you likely to hear?

a) "Low levels of oxygen caused minor brain damage that makes it difficult for me to learn." b) "My liver produces a toxin that disrupts release of hormones necessary for development." c) "As a result of an extra #21 chromosome I have unusual facial features and difficulty with memory." d) "My blood has too many abnormal hemoglobin molecules, which reduce oxygen delivery and can result in a high fever and severe pain."

Glutamate functions as the:

a. neurotransmitter most involved in voluntary movements. b. major inhibitory neurotransmitter in the brain. c. neurotransmitter most responsible for the slowing of intestinal activity during stress. d. major excitatory neurotransmitter in the brain.