A teacher wants to see if there are any differences in the test scores of students who take her exam on the computer and those who take her exam the traditional paper and pencil way. Students with an odd digit at the end of their student ID number are required to take her midterm exam on the computer and those with an even digit are required to take a paper and pencil exam. Her study has a _____
sample with _____.
a. random / random assignment
b. convenience / random assignment
c. convenience / nonrandom assignment
d. random / nonrandom
b
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According to dynamic systems theory, motor skills are __________.
A. developed following an innate program in the brain B. reflexive C. self-organizing D. determined solely by brain maturation
Of the following characteristics Fiona experienced during puberty, which is a primary sex characteristic?
a. breast development b. enlarged uterus c. pubic hair and underarm hair d. breast development and enlarged uterus e. breast development, pubic hair, and underarm hair
Estimates regarding the prevalence of AIDS in southern Africa indicate that a. the percent of the adult population that are HIV positive comprises two-thirds of the cases worldwide. b. 10 percent of the adult population has AIDS
c. 5 million children are orphaned by the disease. d. none of these
A preoccupation with physical symptoms believed to indicate a serious illness is indicative of
a) hypochondriasis. b) conversion disorder. c) somatization disorder. d) psychophysiological disorder.