Positron Emission Tomography (PET) differs from Magnetic Resonance Imaging (MRI) in that a PET scan:
A. studies the structure of the brain
B. studies activity in the brain
C. uses radio frequencies
D. identifies spinal cord injuries
Answer: B
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In the paradigm for classical conditioning, the letter U stands for
A) upper B) used C) unconditioned D) undetermined
A two-way ?2 examines
a. the effect of one variable on another variable. b. the relationship between two variables. c. the extent to which our observations match our expectations. d. All of the above are possible.
What triggers the delayed phase preference in adolescents?
A. the increase in stress that adolescents experience resulting in excess cortisol B. melatonin, which is released about 2 hours later each night in adolescents C. anxiety that adolescents experience because of social pressures D. testosterone in adolescent males and estrogen in adolescent females
Workaholics believe that they must work in order to be:
a. successful b. important c. happy d. have a social life