One famous story from the history of psychology describes a horse whose trainer claimed that he could do simple arithmetic problems and had learned to spell words. What was the name of that horse?

A schizophrenic is MOST likely to have a problem with which of the following neurotransmitters?

a. acetylcholine c. serotonin b. dopamine d. norepinephrine

According to the World Health Organization, smoking will prematurely kill about __________ of the world's children and adolescents

a) 2 million b) 20 million c) 200 million d) 2 billion