An empirical study
is high in external validity if the way it was conducted supports generalizing the results to people and situations beyond those actually studied.
What kind of studies are high in external validity?
External validity helps to answer the question: can the research be applied to the “real world”?
If your research is applicable to other experiments, settings, people, and times
, then external validity is high. If the research cannot be replicated in other situations, external validity is low.
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.”
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A classic example of an external validity concern is
whether traditional economics or psychology lab experiments carried out on college
…
What is external validity in research methods?
External validity refers
to how well the outcome of a study can be expected to apply to other settings
. In other words, this type of validity refers to how generalizable the findings are. … Ecological validity, an aspect of external validity, refers to whether a study’s findings can be generalized to the real world.
Does qualitative research have high external validity?
Without high external validity, you cannot apply results from the laboratory to other people or the real world. In qualitative studies,
external validity is referred to as transferability
.
What is the difference between external validity and generalizability?
External validity is a function of the researcher and the design of the research. Generalizability is
a function of both the researcher and the user
.
How can external validity be high?
Some researchers believe that a good way to increase external validity is by
conducting field experiments
. In a field experiment, people’s behavior is studied outside the laboratory, in its natural setting.
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
…
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
.
Is replicability external validity?
Replicability refers to the extent to which the results and conclusions of a study are corroborated by that study being run again. The more similar the results of a replication study are to the original study, the more likely the results are
to be externally valid
and, therefore, generalisable to a wider context.
What factors affect external validity?
- Population characteristics (subjects)
- Interaction of subject selection and research.
- Descriptive explicitness of the independent variable.
- The effect of the research environment.
- Researcher or experimenter effects.
- Data collection methodology.
- The effect of time.
How do you determine internal and external validity?
Internal validity refers to the degree of
confidence
that the causal relationship being tested is trustworthy and not influenced by other factors or variables. External validity refers to the extent to which results from a study can be applied (generalized) to other situations, groups or events.
What is validity and reliability in quantitative research?
Validity is defined as
the extent to which a concept is accurately measured in a quantitative study
. … The second measure of quality in a quantitative study is reliability, or the accuracy of an instrument.
Does qualitative research have validity?
Validity in research is
concerned with the accuracy and truthfulness of scientific findings
. … Some qualitative researchers have argued that the term validity is not applicable to qualitative research and have related it to terms such as quality, rigor, and trustworthiness.
How do you know if qualitative research is credible?
- Credibility/trustworthiness.
- Transferability.
- Dependability.
- Confirmability.
Is internal validity more important than external validity?
An experimental design is expected to have both internal and external validity.
Internal validity is the most important requirement
, which must be present in an experiment before any inferences about treatment effects are drawn. To establish internal validity, extraneous validity should be controlled.