Katya is an infant who lives in a Romanian orphanage. She receives very little stimulation from her environment, and spends most of her days sitting in her crib. She does receive all the food and basic care she needs. Katya's neural development will most likely involve ______.
A. higher than average levels of myelination
B. a greater degree of synaptic pruning
C. higher than average levels of synaptogenesis
D. a greater degree of neuron production
Answer: B
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Which of the following has been associated with an increased probability of suicide attempts?
a. high dopamine turnover b. high GABA turnover c. low serotonin turnover d. low substance-P turnover
Cindy bites her nails but wants to stop. The behavior she wants to change (biting her nails) is called the:
a. negative behavior b. target behavior c. controlling variable d. independent variable
Small metal disks are pasted onto Miranda's scalp and they are connected by wire to a machine that records her brain waves. From this description, it is evident that Miranda's brain is being studied through the use of ___________
a) a CT scan b) functional magnetic resonance imaging c) a microelectrode d) an electroencephalograph
Which of the following correctly expresses a way in which adolescents in the United States differ from adolescents in most other parts of the world?
a. U. S. adolescents have less leisure time. b. U. S. adolescents spend less time on school work. c. U. S. adolescents spend less time talking with their friends. d. U. S. adolescents spend more time helping their parents with household chores.