Which of the following terms refers to the extent to which research findings are generalizable?

Which of the following terms refers to the extent to which research findings are generalizable?

Generalizability refers to the extent to which the results of a study apply to individuals and circumstances beyond those studied. (1) Com- monly referred to as external validity, generalizability is the degree to which a given study’s findings can be extrapolated to another population.

What is Target Population Research?

The target population is the group of individuals that the intervention intends to conduct research in and draw conclusions from. In cost-effectiveness analysis, characteristics of the target population and any subgroups should be described clearly.

What is the difference between generalizability and validity in experimental research?

If a study is valid then it truly represents what it was intended to represent. Experimental validity refers to the manner in which variables that influence both the results of the research and the generalizability to the population at large.

What does external validity mean in research?

So, external validity refers to the approximate truth of conclusions the involve generalizations. Put in more pedestrian terms, external validity is the degree to which the conclusions in your study would hold for other persons in other places and at other times.

What is the purpose of external validity?

External validity is the extent to which you can generalize the findings of a study to other situations, people, settings and measures. In other words, can you apply the findings of your study to a broader context? The aim of scientific research is to produce generalizable knowledge about the real world.

What are the limits to generalizability in terms of external validity?

“A threat to external validity is an explanation of how you might be wrong in making a generalization from the findings of a particular study.” In most cases, generalizability is limited when the effect of one factor (i.e. the independent variable) depends on other factors.

What are the elements of external validity?

In sum, external validity covers at least four aspects of experimental design: whether the participants resemble the actors who are ordinarily confronted with these stimuli, whether the context within which actors operate resembles the context of interest, whether the stimulus used in the study resembles the stimulus …

Which kind of sample is best for external validity?

— In terms of external validity, the best sample is a representative sample — one in which every member of the population has an equal chance of being selected.

How do you determine external validity?

Results External validity refers to the question whether results are generalizable to persons other than the population in the original study. The only formal way to establish the external validity would be to repeat the study for that specific target population.

Does sample size affect external validity?

The use of sample size calculation directly influences research findings. Very small samples undermine the internal and external validity of a study. Very large samples tend to transform small differences into statistically significant differences – even when they are clinically insignificant.

What type of claim is external validity especially important for?

c) Remind yourself that external validity (through generalizable sampling techniques) is especially important for frequency claims. Give two or three examples of research questions that fit this kind of claim.

What is the trade off between internal and external validity?

The trade-off model suggests that every desicion the researcher makes effects both internal and external validity. It also states that it is very hard to maintain both internal and external validity at the same time. So the experiment is give and take with the two types of validity.

What are internal and external threats to validity?

External validity is the extent to which your results can be generalized to other contexts. There are eight threats to internal validity: history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition.

What is the relationship between moderators and external validity?

What is the relationship between moderators and external validity? Moderators suggest that associations may be spurious. Moderators suggest that associations may not generalize to all subgroups of people. Moderators are necessary for external validity to be established.

Why are double barreled questions problematic quizlet?

Why are double-barreled questions problematic? They may have poor internal reliability. They are leading questions. They may have poor construct validity.

What does it mean that reliability is necessary but not sufficient for validity?

Reliability is necessary but not sufficient for validity. If you used a normal, non-broken set of scales to measure your height it would give you the same score, and so be reliable (assuming your weight doesn’t fluctuate), but still wouldn’t be valid.

Why do studies that use probability samples have excellent external validity?

Why do studies that use probability samples have excellent external validity? All members of the population are equally likely to be represented in the sample.

What are the advantages of probability sampling to the validity of research?

With probability samples you can make valid generalization to the population from which the samples are drawn. Probability samples are usually more representative (i.e. they have higher external validity) than non-probability samples because there is less bias.

What does it mean when a study Cannot be replicated by an independent researcher?

What does it mean when a study cannot be replicated by an independent researcher? The replication was done incorrectly. Meta-analyses can examine conceptual and direct replications.