Why would a researcher want to ensure that every person in the underlying population of study has an equal chance of being included in the sample?
A. It helps eliminate a correlational relationship.
B. It increases the chances of finding a causal relationship.
C. It provides important epidemiological information, such as the prevalence and incidence of the disorder.
D. It increases the researcher's ability to generalize findings to the larger group.
Answer: D
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Factors that influence the direction or strength of a relationship of variables of interest are called ____
a. correlated variables b. mediator variables c. risk variables d. moderator variables
As you and your friend walk across the street toward the cafeteria, she says, "Oh, I can smell the lobster from here." You, however, can't smell it yet. Which explanation is most plausible??
a. ?Your friend has a lower absolute threshold than you. b. ?Sensory adaptation has decreased your response. c. ?You have a higher just-noticeable difference than she. d. ?Your friend She has a greater sense of subliminal perception than you.
Karloss has administered an IQ test to a large sample of people representative of the general population. If his results are consistent with those discussed in your textbook, he should find the greatest difference between which two groups??
a. ?upper-class and lower-class subjects of the same ethnicity b. ?males and females of the same socioeconomic class c. ?African Americans and European Americans of the same socioeconomic class d. ?Asians and Hispanics of the same socioeconomic class
An axon is a
A. cluster of fibers at one end of a neuron. B. neuron's cell body. C. neuron's protective coating of fat and protein. D. long, slim, tubelike extension of a neuron.