The brain imaging technique that involves injection of radioactive chemicals in order to measure brain function is called
A. positron emission tomography (PET).
B. mass spectroscopy.
C. electron microscopy.
D. electrochemical detection.
A
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For every 5 times that you go to the gym each week, you reward yourself with a treat. This best illustrates which of the following schedules of reinforcement?
a. fixed ratio b. variable ratio c. variable interval d. fixed interval e. shaped
The earliest systematic study of children began with recorded observations of children in
a. artwork depicting children. c. videos about children. b. baby biographies. d. music about children.
Critics of drive theory state that:
a. Many behaviors are not related to satisfying needs. b. External stimuli do not show an ability to alter behavior. c. Only lower animals can be shown to have drives. d. All of the above are true.
Intellectual disabilities caused by postnatal problems include all of the following EXCEPT
a. malnutrition during early childhood. b. exposure to lead, PCBs, and other toxins early in childhood. c. fetal alcohol syndrome (FAS). d. living in very poor households where nutrition, intellectual stimulation, medical care, and emotional support may be inadequate.