One study described in your book examined the effects of ginkgo biloba as an answer to one's memory problems. The study highlighted the importance of utilizing which one of the following controls?
a. single-blind control
b. double-blind control
c. placebo control
d. counter-balancing control
Answer: c. placebo control
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Emotions are complex in nature. Some philosophers have argued that emotions have evolved to help species adapt to their environment. This view of emotions is best illustrated by what approach?
A. Functionalism B. Empiricism C. Structuralism D. Foundationalism E. Positivism
The function of the cornea is to:
a. add color to light waves entering the eye b. screen out irrelevant light waves c. amplify neural impulses and action potentials d. bend and focus light waves into a narrower beam of light
People with schizophrenia tend to have larger-than-normal frontal lobes
Indicate whether the statement is true or false
In an experiment, a researcher manipulates one variable to see how it affects a second variable. The manipulated variable is called the __________.
A. dependent variable B. experimental variable C. independent variable D. placebo