Which of the following is a fundamental difference between the t statistic and a z-score?
a. The t statistic uses the sample mean in place of the population mean.
b. The t statistic uses the sample variance in place of the population variance.
c. The t statistic computes the standard error by dividing the standard deviation by n - 1 instead of dividing by n.
d. All of these are differences between t and z.
B
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Which of the following techniques creates a brain lesion by overstimulating neurons to death?
A) aspiration of a region of the cortex B) extreme physical exercise C) infusions of an excitatory amino acid into a brain region D) 6-hydroxydopamine infusions into a brain region E) radio-frequency current passed through a brain region
A psychologist whose major interest focuses on how behavior changes as a function of age would probably be considered a
a. physiological psychologist. b. developmental psychologist. c. social psychologist. d. cognitive psychologist.