The correlation coefficient is a more convenient way of communicating results than
a. the range because standard tables to determine its value have already been developed.
b. using inferential statistics.
c. calculating the average deviations of scores from both the median and the mean.
d. the range because it makes calculating the standard deviation unnecessary.
e. showing scatterplots of the scores.
e. showing scatterplots of the scores.
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People hear a tone, followed by a puff of air to the eyes, which causes an eyeblink. After a few pairings, people blink their eyes when they hear the tone. What are the conditioned stimulus and the unconditioned stimulus?
a. The puff of air is the conditioned stimulus and the tone is the unconditioned stimulus. b. The tone is the conditioned stimulus and the puff of air is the unconditioned stimulus. c. The puff of air is the conditioned stimulus and blinking is the unconditioned stimulus. d. The tone is the conditioned stimulus and blinking is the unconditioned stimulus.
According to Allport, our uniqueness is determined by:
a. our childhood experiences. c. the conflict between the id and the superego. b. the organismic valuing process. d. our genetics and learning.
Which of the following statements is accurate regarding electrical activity and the brain?
A) Beta waves are a clear indicator of deep sleep. B) Electrical activity of individual neurons can be detected with the electroencephalograph. C) The alpha waves are associated with mental and physical activity. D) Computerized electroencephalograph (EEG) imaging can show epileptic seizures and other neurological disturbances such as Alzheimer’s disease. E) Because electrical activity in the brain cannot be detected by noninvasive means, using electroencephalography often carries substantial risk.
Kambe administered a memory test to a group of two-year-olds, a group of four-year-olds, and a group of six-year-olds in the same week. This is an example of a
a. longitudinal study. c. sequential study. b. quasi-experimental design. d. cross-sectional study.