NSE 212 Practice Questions and Answers
What is the purpose of randomly assigning people to control or experimental groups?
Every subject has an equal chance of being included in any group. No systematic bias that may affect dependent variable
What is the purpose of giving the experimental ...
NSE 212 Practice Questions and
Answers
What is the purpose of randomly assigning people to control or experimental groups? -
answer Every subject has an equal chance of being included in any group. No
systematic bias that may affect dependent variable
What is the purpose of giving the experimental group a treatment? - answer
Experimenter controls & consciously varies the IV, then observes its effect on DV. This
offers a comparison
Why does the researcher try to control extraneous variables? - answer Group
differences that emerge truly related to treatment are observed. Ex. age is controlled
through inclusion criteria
What are the limitations of experimental research? - answer Some variables are not
amenable to manipulation or ethical to do so, making it impractical
The researcher randomly assigned post surgical patients to aromatherapy or usual
care, to assess effects on nausea. This is an example of: - answer Experimental
design
Intervention, people were assigned randomly
The researcher compared levels of agitation in two groups of nursing home residents,
one group living in a home where they received a daily foot massage for 2 weeks, the
other in a home without the massages. This is an example of: - answer
Quasiexperimental design
Intervention, but subjects were not assigned randomly; nonequivalent control group
The researcher studied daily pain ratings over a 10-week period for a group of patients
with rheumatoid arthritis who began a Tai Chi program in week 5. This is an example of:
- answer Quasiexperimental design
Intervention, but only one group was without any randomization; time series
The researcher compared pregnant women who did or did not have a miscarriage in
terms of subsequent marital satisfaction. This is an example of: - answer
Nonexperimental design
No intervention. Women could not be assigned at random to a miscarriage; cohort
design
, The researcher compared patients who were assigned at random to a program to
manage urinary incontinence or in a waitlist group who received the program 6 months
later. This is an example of: - answer Experimental design
Intervention, people were assigned randomly
A researcher was interested in examining the relationship between hours of sleep and
test scores in nursing students. This is an example of: - answer Nonexperimental
design
Test of relationships (correlation), no manipulation of IV
A research team plans to study the effect of play therapy rooms on children's mood.
Patients on unit A and D will be exposed to the play therapy rooms. Patients on unit F
and H will not be exposed to the play therapy room. This is an example of: - answer
Quasiexperimental design
No randomization. There is a comparison group; nonequivalent control group design
When a sample contains different characteristics that are important to capture, which
sampling approach should be used to select participants? - answer Stratified random
sampling
More than one characteristic to be selected
A researcher is interested in the satisfaction of BScN students in the collaborative
program. Which approach to sampling would lead to the most representative option? -
answer Simple random sampling
The researcher randomly assigned 50 men and 50 women smokers who responded to
a recruitment notice to a smoking cessation intervention or to a control group. This is an
example of: - answer Nonprobability sampling
First random selection occurs, then random assignment
The researcher sampled every 25th nurse on a roster of licensed nurses in Florida to
study their use of personal digital assistants. The starting # of 12 was selected at
random. This is an example of: - answer Probability sampling
Systematic
The researcher randomly assigned 152 elders recruited from five nursing homes to a
foot massage or a wait list group to assess effects on level of depression. This is an
example of: - answer Nonprobability sampling
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