The term control
refers to measures used by the researcher to keep the conditions of the study uniform.
Which of the following is the area of concern with regard to external validity?
There are seven threats to external validity:
selection bias, history, experimenter effect, Hawthorne effect, testing effect
, aptitude-treatment and situation effect.
Which factors would be considered threats to internal validity Select all that apply?
There are eight threats to internal validity:
history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition
.
For which type of quantitative study is the issue of control less important?
The issue of control would be less important in a quantitative study with which type of research design? A (Control is less important in
exploratory studies
because the researcher is investigating an area in which little literature exists.) 17.
What would a nurse researcher do to ensure that the study population is a homogeneous sample group of participants?
How would a nurse researcher ensure that the sample used in a quantitative study is homogeneous? …
Use eligibility criteria to limit extraneous variables relevant to the study.
What is an example of external validity?
External validity is another name for the generalizability of results, asking “whether a causal relationship holds over variation in persons, settings, treatments and outcomes.”
1
A classic example of an external validity concern is
whether traditional economics or psychology lab experiments carried out on college
…
What affects internal and external validity?
Internal validity is
the degree of confidence
that the causal relationship you are testing is not influenced by other factors or variables. External validity is the extent to which your results can be generalized to other contexts. The validity of your experiment depends on your experimental design.
What is the biggest threat to internal validity?
History, maturation, selection, mortality and interaction of selection and the experimental variable
are all threats to the internal validity of this design.
What are the 12 threats to internal validity?
Threats to internal validity include
history, maturation, attrition, testing, instrumentation, statistical regression, selection bias and diffusion of treatment
.
What is an example of internal validity?
An example of a study with good internal validity would be
if a researcher hypothesizes that using a particular mindfulness app will reduce negative mood
.
Which type of sampling is most at risk for sample bias?
Which type of sampling is most vulnerable to bias? Rationale: Although it is the most widely used approach for quantitative researchers,
convenience sampling
is the most vulnerable to sampling biases.
Which activity represents attention to credibility in a qualitative study?
Which activity represents attention to credibility in a qualitative study?
Providing direct quotations from study participants
.
How are threats to validity affected when studies are conducted in real world settings?
D (Random assignment to groups helps ensure that antecedent (preexisting) variables will be similarly distributed between groups.) 23. How are threats to validity affected when studies are conducted in real-world settings? …
Threats to internal validity are decreased, whereas threats to external validity are increased.
Why it is important to have a control group within a study examining the effectiveness of a particular drug quizlet?
they provide a standard of comparison for the experimental group. Control groups are important in experiments because: control group. An animal
researcher is studying the effect of a new drug
on the memory of mice.
Why would a researcher choose to use a stratified sample in a research study quizlet?
– Every subject, object or element in the population has an equal chance, or probability of being chosen. – Subjects are readily available or easily accessible to the researcher. … A stratified sample
has members from each segment of a population
. This ensures that each segment from the population is represented.
How could a nurse researcher’s use of a homogeneous sample weaken a research study quizlet?
How could a nurse researcher’s use of a homogeneous sample weaken a research study? … A
nurse researcher assigns subjects to experimental and control groups in such a manner
that each subject in a population has an equal chance of being selected.
