Ryan suffers from schizophrenia. He often mixes up words and ends up talking about things which make no sense. Which symptom of schizophrenia is Ryan exhibiting?

Which of the following is NOT true of neural impulses?

a. The neuron fires in response to every impulse it receives. b. Neural impulses travel at speeds ranging from 3 feet per second to 400 feet per second. c. The incoming message must be above a certain threshold to cause a neural impulse. d. The neuron may fire during the relative refractory period.

A researcher has surveyed several thousand introductory

psychology students across the country regarding their views of dating. Because all of his participants were introductory psychology students, this researcher's findings a. are totally invalidated. b. will have limitations regarding their meaning. c. are completely valid because all college students have to take introductory psychology. d. cannot be published until they have been replicated at least two more times.