BSNC 5060 Final Test Questions with Answers
Which of the following factors or characteristics is present only in true experimental design (and not in a quasi-experimental design)?
a. research question or hypothesis
b. experimental treatment
c. informed consent
d. randomization - Answer-d.
...
Which of the following factors or characteristics is present only in true experimental
design (and not in a quasi-experimental design)?
a. research question or hypothesis
b. experimental treatment
c. informed consent
d. randomization - Answer-d.
Random assignment of participants to experimental and control groups has which of
these effects?
a. minimizes mortality within groups
b. maximizes variance between groups
c. decreases systematic bias
d. increases selection bias - Answer-c.
Control is important in an experimental research study for which of these reasons?
a. It ensures maintenance of participant confidentiality.
b. It introduces one or more constants into the experimental situation.
c. It prevents data collection from extending beyond the original time specified for the
study.
d. It ensures a cause-and-effect relationship between independent and dependent
variables. - Answer-b.
What advantage do quasi-experimental studies have over experimental studies?
a. A smaller sample size is sufficient to obtain significant results in quasi-experimental
studies.
b. Quasi-experimental studies are stronger in establishing cause-and-effect
relationships.
c. Descriptive statistics can be used to analyze the data in quasi-experimental studies.
d. Quasi-experimental studies are more adaptable to real-world settings. - Answer-d.
The nurse is critiquing a research study that used an experimental design. Which of the
following criteria must be met to infer causality?
a. The relationship between cause and effect must be reciprocal.
b. The relationship must not be explainable by any other variable.
, c. The independent variable must change in response to manipulation of the dependent
variable.
d. The outcome must be logical, expected, and predictable. - Answer-b.
What aspect should be the primary consideration in critiquing the research report of an
experimental study and determining the validity of the conclusions presented?
a. how well the researcher controlled for extraneous variables
b. the number of participants who dropped out of the control and experimental groups
c. the credentials and previous experience of the researcher
d. the number of persons involved in the data collection process - Answer-a.
Which of the following statements about random assignment or randomization is true?
a. The randomization process decreases the influence of researcher bias but can
increase the effect of systematic bias in a study.
b. The randomization process decreases the influence of systematic bias but can
increase the effect of researcher bias in a study.
c. With randomization, each participant has an equal and known probability of being
assigned to any group in a study.
d. Randomization eliminates the need for informed consent. - Answer-c.
In a true experimental study, the control group is the group that does what?
a. Receives the experimental treatment
b. Receives the placebo treatment
c. Experiences the adverse results
d. Experiences the reactive effects. - Answer-b.
What is the dependent variable in the research scenario? In a study about help to quit
smoking, one group of participants received a single supportive phone call 10 days after
attending a program on strategies to resist the urge to smoke. A second group received
a weekly supportive phone call for six weeks after attending the same program, and a
third group received no supportive phone calls after attending the program.
a. program on strategies to resist smoking
b. elimination of cigarette smoking
c. weekly supportive phone call
d. no supportive phone call - Answer-b.
hypothesis - Answer-formal statement of the expected relationships between two or
more variables in a specified population that suggests an answer to the research
question
hypothesis: DIRECTIONAL - Answer-states which way the relationship should exist
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