One problem with the pretest-posttest control-group design described in Chapter 16 is there is
no way to determine if the pretest affected how participants responded to the posttest. This
concern is based on what threat to external validity?
A) interaction of selection and treatment B) multiple-treatment interference
C) interaction of testing and treatment D) reactive arrangements
C
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Responding to a substance, such as a sugar pill or a saline injection, as if it were the real drug is referred to as
a. the placebo effect. b. an anthropomorphic error. c. the somatization variable. d. a psychosomatic complication.
Sylvia, a 28-year-old pregnant woman, has been diagnosed with an illness that carries the risk of delivering very large infants, weighing 10 pounds or more. Which of the following diseases has Sylvia been diagnosed with?
A. gestational diabetes B. genital herpes C. syphilis D. AIDS
The mean, standard deviation, and variance of a sample are called sample __________
Fill in the blanks with correct word
Freud believed that the id
A. is reasonable and logical. B. is the executive branch of personality. C. serves the moral or idealistic principle. D. serves the reality principle. E. constantly seeks to increase pleasure and reduce tension.