Which method uses a radio frequency wave to excite hydrogen atoms in the brain to generate an image of the living human brain?
A. computerized tomography
B. magnetic resonance imaging
C. single-unit recording
D. PET scans
Answer: B
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You are interested in studying the potential changes in intelligence over the lifespan. You have selected 250 people who are currently 2 years old and you plan to assess them every 5 years for 40 years. What type of study are you planning to conduct?
a. Quasi-experimental b. Ethnographic c. Longitudinal d. Cross-sectional
Based on his observation of brain damage and behavioral difficulties in a stroke victim, Paul Broca concluded that __________.
A. the control of speech is a function of the brain's left hemisphere B. the brain's right hemisphere controls motor movements on the right side of the body C. damage to the right hemisphere impairs speech D. different regions of the brain control heart rate and breathing, purposeful movements, and sensory function
__________ receive messages from other neurons and __________ send messages to other neurons.
A. Axons; dendrites B. Axon; soma C. Soma; glial cells D. Dendrites; axons
What is a scientifically valid concern regarding adolescents' media use?
A. Adolescents who frequently use the Internet experience detrimental effects on their mental health. B. Adolescents who use the Internet for socializing are at a high risk of being the victim of unwanted sexual attention. C. The amount of time adolescents spend watching TV and playing video games is inversely linked to the amount of time they spend in physical activity. D. The increased time spent on the Internet has had a negative effect on adolescents' social development and relationships.