Name and describe two different methods for measuring brain function (not anatomy)
What will be an ideal response?
PET scan: Uses an injection of a radioactive substance that, as it decays, produces gamma rays that are detected outside of the head. Greater radioactivity in a particular area indicates greater blood flow to that region.
fMRI: The presence of hemoglobin with oxygen acts differently in a magnetic field than hemoglobin without oxygen. Because active areas of the brain use more oxygen, these areas can be detected by MRI equipment that is sensitive to these magnetic differences.
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Tim has been worried about his grades for more than three months. After hearing about the diagnosis of generalized anxiety disorder, he becomes convinced that he has the disorder himself. After seeing a mental health professional, what is he told?
a. He is actually suffering from the early stages of panic disorder. b. His concern over grades is more indicative of obsessive-compulsive disorder. c. He does not meet the criteria for generalized anxiety disorder in terms of length of time and number of worries. d. The focus of his worry suggests that he is suffering from a phobic reaction rather than a generalized anxiety disorder.
Luckily, Cy can spot the fly in his soup and distinguish it from the flecks of pepper also floating in the broth. From Cy's perspective, what is the figure and what is the (back)ground?
A) The pepper is the ground, and the broth is the figure. B) The fly is the figure, and the broth is the ground. C) The broth is the figure, and the pepper is the ground. D) The pepper is the figure, and the fly is the ground.
A researcher wants to study the effect of exercise on sexual responsiveness. She assigns individuals to two groups. One group participates in structured exercise four times a week. The other group does not participate in the exercise program
Each week, individuals complete a questionnaire regarding sexual responsiveness. What is the dependent variable in this study? A) No exercise B) Exercise four times a week C) Participants' sexual responsiveness D) The passage of time
Anorexia nervosa and bulimia nervosa tend to begin ______.
a. before puberty b. during late adolescence c. during early adulthood d. during middle adulthood