Jeff is using a measure that will indicate how many standard deviations above or below the mean a score is. The measure being used by Jeff is called a
a. z-score.
b. Pearson r.
c. median.
d. coefficient of correlation.
A
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How has research on comorbidity changed the focus of epidemiological research?
a. shifted the focus from the psychotic disorders to milder disorders that affect more people b. higher than expected prevalence of mental retardation led to more emphasis on intellectual ability c. shifted the focus from counting the number of people with a disorder to measuring the functional impairment associated with the problems d. evidence for the biological etiology of more mental disorders has switched the focus to identifying the genes responsible for particular disorders
Why is Rh incompatibility referred to as "incompatible?"
a. Because the Rh factors of mother and child are the same, which can be fatal b. Because both mother and child develop antibodies that cannot interact c. Because the Rh factors of the mother and child are different, which may cause problems in subsequentpregnancies d. Because the fetus is Rh-negative and it should be Rh-positive
Which statement concerning the sickle-cell trait is true? a. Individuals with the trait have the dominant phenotype but possess the recessive genotype
b. Individuals with the trait have both a dominant and recessive allele for the disorder. c. Individuals with the trait are genetically predisposed to the disorder but cannot display any symptoms. d. Individuals with the trait tend to have the most severe form of the disease.
After having a "fender-bender" at a particular intersection near work, Nancy had to go safely through this intersection every day for two weeks before she stopped tensing up as she neared this intersection. Being able to go through this intersection without becoming tense shows that Nancy's fear has undergone which of the following?
a. extinction b. shaping c. a spontaneous recovery d. latent learning