A source of error that is of particular concern for researchers studying genetically linked disorders is ____.
a. the difficulty involved in finding probands
b. the difficulty of getting family members of probands to participate in the research
c. accurate reporting of whether people related to the probands are sick or well
d. getting funding to carry out the research
Question 2A researcher has identified seventy individuals with a relatively rare psychological disorder. These individuals are asked to identify blood relatives, who are contacted by the researcher to see if they have the same disorder. What kind of research study is being performed?
a. an epidemiological survey
b. a genetic linkage study
c. a historical study
d. a correlational case study
Question 3Martin and Matthew are identical twins. Matthew has obsessive-compulsive disorder, but Martin does not. In a biological research study, who would be the proband?
a. Martin
b. Matthew
c. Martin and Matthew's mother
d. Martin and Matthew's older sister
Question 4In a genetic linkage study, which piece of information would be important?
a. whether behavior changes when individuals are exposed to a particular chemical or diet
b. whether the experimenter knows who is in the experimental group
c. the nationwide prevalence of the disorder under study
d. identifying family members who have the same disorder as the proband
Question 5Kira is involved in a research study consisting of four phases. First, her behavior is monitored under baseline conditions. Then her mother gives her rewards for specific behaviors. In the third stage, she goes back to baseline, and in the fourth, her mother again rewards her. What kind of research is this?
a. a single-participant experiment
b. longitudinal
c. correlational
d. a field study
Question 6A particular concern about the usefulness of single-subject designs is ____.
a. researcher bias
b. whether they provide information about cause and effect
c. their internal validity
d. their external validity
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