The scientists who tryto determine how biological events in the brain produce our emotions

Concern over the use of animals in research has led researchers to seek alternatives to the use of animals. Which of these is one of the alternatives that researchers have devised in recent decades?

a) Researchers are relying on the use of correlational research in place of experimental research. b) Bacteria and fertilized chicken eggs have been used as substitutes for animals in tests on toxic chemicals. c) Computer projections of the possible effects of chemicals on the brain are used to replace experiments on live animals. d) Researchers are relying on panels of experts to make predictions on the possible outcomes of experiments based on their experiences.

A professor invites students who did poorly on the first test to attend a special review session before the second test. Most do better on the second test. What kind of research is this?

a. A before-and-after study b. A single-blind experiment c. A double-blind experiment d. A case history