Wayne is 50 years old and has recently developed a painful curvature of his penis making penetration impossible. What would be a likely diagnosis?

Dr. Hefner wants to test the effects of Viagra on sexual desire. Dr. Hefner's research assistant (who is unaware of what the study is testing) randomly gives 50 males the drug while 50 males receive a placebo

(The study subjects are also unaware of the treatment which they are getting.) This would be described as a a. correlational study. b. double-blind study. c. study with no control group. d. study with two independent variables. e. study that would be difficult to replicate.

_____ is utilized when an individual conjures up a sensory experience in one's own mind; a _____ is a mental category that represents a group of people, objects, or events

a) An exemplar; prototype b) A prototype; heuristic c) A concept; imagery d) Imagery; concept