All of the following impact internal validity except:
a. the model used resembles the disorder.
b. using a placebo control group.
c. using inconsistent methods to measure the dependent variable.
d. accidentally changing the dose of the study drug.
Ans: A
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If it were important to determine the exact location of brain impairment, which of the following tests would most likely be used?
a. Bender Visual-Motor Gestalt Test b. Halstead-Reitan Neuropsychological Battery c. Gall Phrenological Brain Scan d. Stanford-Binet Intelligence Scale
Which of the following is true of local potential but not action potential?
A. It is decremental. B. It results from a depolarization of the cell membrane. C. It results from a hyperpolarization of the cell membrane. D. It is the result of electrically gated ion channels in the axon.
Compared to the adult brain, the brain of a newborn baby has fewer nerve cell branches that receive information, which are called
a. axons. b. dendrites. c. nodes of Ranvier. d. neurilemma.
Brain damage, loss of vision, and mental retardation which may be caused by eating undercooked meat and handling cat feces or garden dirt is attributable to
lead or mercury pollution. German measles. syphilis. toxoplasmosis.